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EnglishMOBILITY -> Wheels and tires for your BMW 8 Series 2018-2025
Wheels and tires
MOBILITY
Wheels and tires
Tire pressure specifications
Vehicle features and options
In the tire inflation pressure table
This chapter describes all standard, country-
specific, and optional equipment offered with
the series. It also describes features and func-
tions that are not necessarily available in the
vehicle, e.g., due to the selected options or
country versions. This also applies to safety
functions and systems. When using these
functions and systems, the applicable laws
and regulations must be observed.
The tire inflation pressure table contains all tire
inflation pressure specifications for the speci-
fied tire sizes at the ambient temperature. The
tire inflation pressure values apply to tire sizes
recommended by the manufacturer of the ve-
hicle for the vehicle type.
To identify the correct tire inflation pressure,
please note the following:
▷
▷
Tire sizes of the vehicle.
Maximum speed for driving.
Tire pressure
On the control display
General information
The tire condition and tire pressure influence
the following:
The current tire inflation pressure values and
the intended tire inflation pressure values for
the mounted tires can be displayed on the con-
trol display.
▷
▷
▷
▷
The service life of the tires.
Driving safety.
To ensure that they are displayed correctly, the
tire sizes must be stored in the system and
must have been set for the mounted tires.
Driving comfort.
Fuel consumption.
The current tire inflation pressure value is lo-
cated on each tire.
Safety information
The reference tire inflation pressure value is
located in the lower area of the control display.
Warning
A tire with too little or no tire inflation pres-
sure may heat up significantly and sustain
damage. This will have a negative impact
on aspects of handling such as steering and
braking response. There is a risk of accident,
injury, or property damage. Regularly check
the tire inflation pressure, and correct it as
needed, for instance twice a month and be-
fore a long trip.
Checking the tire pressure
General information
Tires heat up while driving. The tire pressure
increases with the tire temperature.
Tires have a natural, consistent tire pressure
loss.
The displays of inflation devices may under-
read by up to 0.1 bar/2 psi.
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Wheels and tires
MOBILITY
Reinitialize the Flat Tire Monitor.
With Tire Pressure Monitor:
Checking using tire inflation pressure
specifications in the tire inflation
pressure table
1. Determine the intended tire inflation pres-
sure levels for the mounted tires.
The corrected tire inflation pressures are ap-
plied automatically. Make sure that the correct
tire settings have been made.
2. Check the tire inflation pressure in all four
tires, using a pressure gage, for example.
With tires that cannot be found in the tire pres-
sure values on the control display, reset the
Tire Pressure Monitor (TPM).
3. Correct the tire inflation pressure if the ac-
tual tire inflation pressure deviates from the
intended tire inflation pressure.
Tire inflation pressures up to
100 mph/160 km/h
For speeds of up to 100 mph/160 km/h and
for optimum driving comfort, note the pressure
values in the tire inflation pressure table and
adjust as necessary.
4. Check whether all valve caps are screwed
onto the tire valves.
The tire inflation pressure specifications in the
tire inflation pressure table only relate to cold
tires or tires at the same temperature as the
ambient temperature.
Only check the tire inflation pressure levels
when the tires are cold, i.e.:
▷
A distance traveled of max. 1.25 miles/2 km
has not been exceeded.
▷
If the vehicle has not moved again for at
least 2 hours after a trip.
Checking using the tire inflation
pressure specifications on the control
display
These pressure values can also be found on
the tire pressure label on the driver's door pil-
lar.
1. "CAR"
Do not exceed a speed of 100 mph/160 km/h.
2. "Vehicle status"
3.
"Tire Pressure Monitor"
4. Check whether the current tire inflation
pressure levels deviate from the intended
tire pressure value.
5. Correct the tire inflation pressure if the ac-
tual tire inflation pressure deviates from the
intended tire inflation pressure.
The display of the current tire pressure may be
limited when the vehicle is stationary. After a
short drive, the tire pressure is updated.
After correcting the tire pressure
For the flat tire monitor:
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Wheels and tires
MOBILITY
840i xDrive
Tire pressure values up to
100 mph/160 km/h
Tire size
Pressure specifica-
tions in bar/PSI
840i
Specifications in
bar/PSI with cold
tires
Tire size
Pressure specifica-
tions in bar/PSI
Specifications in
bar/PSI with cold
tires
245/40 R 19 98 H
XL M+S
2.4 / 35
2.6 / 38
245/40 R 19 98 V
XL M+S
245/40 R 19 98 H
XL M+S
2.2 / 32
2.6 / 38
Front: 245/40 R 19 2.4 / 35
98 H XL A/S
-
245/40 R 19 98 V
XL M+S
Rear: 275/35 R 19
100 H XL A/S
-
2.4 / 35
Front: 245/40 R 19 2.2 / 32
98 H XL A/S
-
Front: 245/40 R 19 2.4 / 35
98 Y XL
-
Rear: 275/35 R 19
100 H XL A/S
-
2.4 / 35
Rear: 275/35 R 19
100 Y XL
-
2.4 / 35
-
Front: 245/40 R 19 2.2 / 32
98 Y XL
-
Front:
245/35 R 20 95
Y XL
2.5 / 36
Rear: 275/35 R 19
100 Y XL
-
2.4 / 35
-
Front:
245/35 R 20 95
Y XL
2.4 / 35
Rear: 275/30 R 20
97 Y XL
-
2.8 / 41
-
Front: 245/40 R 19 2.4 / 35
98 V XL M+S
Rear: 275/30 R 20
97 Y XL
-
2.8 / 41
-
Rear: 275/35 R 19
100 V XL M+S
-
2.4 / 35
Front: 245/40 R 19 2.2 / 32
98 V XL M+S
Rear: 275/35 R 19
100 V XL M+S
-
2.4 / 35
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Wheels and tires
MOBILITY
inflation pressure table, and adjust as neces-
sary.
M850i xDrive
Tire size
Pressure specifica-
tions in bar/PSI
Tire pressure values over
100 mph/160 km/h
Specifications in
bar/PSI with cold
tires
840i
Tire size
Pressure specifica-
tions in bar/PSI
245/40 R 19 98 H
XL M+S
2.5 / 36
2.7 / 39
245/40 R 19 98 V
XL M+S
Specifications in
bar/PSI with cold
tires
Front: 245/40 R 19 2.5 / 36
98 H XL A/S
-
245/40 R 19 98 H
XL M+S
2.5 / 36
2.7 / 39
3.0 / 44
Rear: 275/35 R 19
100 H XL A/S
-
2.5 / 36
-
245/40 R 19 98 V
XL M+S
3.2 / 46
Front:
245/35 R 20 95
Y XL
2.7 / 39
Front: 245/40 R 19 2.5 / 36
98 H XL A/S
-
Rear: 275/30 R 20
97 Y XL
-
2.8 / 41
-
Rear: 275/35 R 19
100 H XL A/S
-
2.8 / 41
Front: 245/40 R 19 2.5 / 36
98 V XL M+S
Front: 245/40 R 19 2.5 / 36
98 Y XL
-
Rear: 275/35 R 19
100 V XL M+S
-
2.5 / 36
Rear: 275/35 R 19
100 Y XL
-
2.8 / 41
-
Tire pressures, 100 mph/160 km/h
Front:
2.7 / 39
245/35 R 20 95
Y XL
Warning
When driving at speeds greater than
Rear: 275/30 R 20
97 Y XL
-
3.2 / 46
-
100 mph/160 km/h, incorrect tire pressures
can negatively affect vehicle handling, e.g.,
safety or comfort while driving. The tires can
become damaged, which may cause an ac-
cident. There is a risk of accident, injury,
or property damage. To drive at maximum
speeds, note the specified tire pressure for
driving above 100 mph/160 km/h in the tire
Front: 245/40 R 19 2.7 / 39
98 V XL M+S
Rear: 275/35 R 19
100 V XL M+S
-
3.0 / 44
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Wheels and tires
MOBILITY
840i xDrive
M850i xDrive
Tire size
Pressure specifica-
tions in bar/PSI
Tire size
Pressure specifica-
tions in bar/PSI
Specifications in
bar/PSI with cold
tires
Specifications in
bar/PSI with cold
tires
245/40 R 19 98 H
XL M+S
2.6 / 38
2.8 / 41
3.0 / 44
245/40 R 19 98 H
XL M+S
2.7 / 39
3.0 / 44
3.0 / 44
245/40 R 19 98 V
XL M+S
3.2 / 46
245/40 R 19 98 V
XL M+S
3.3 / 48
Front: 245/40 R 19 2.6 / 38
98 H XL A/S
-
Front: 245/40 R 19 2.7 / 39
98 H XL A/S
-
Rear: 275/35 R 19
100 H XL A/S
-
2.8 / 41
Rear: 275/35 R 19
100 H XL A/S
-
2.8 / 41
-
Front: 245/40 R 19 2.6 / 38
98 Y XL
-
Front:
245/35 R 20 95
Y XL
3.1 / 45
Rear: 275/35 R 19
100 Y XL
-
2.8 / 41
-
Rear: 275/30 R 20
97 Y XL
-
3.2 / 46
-
Front:
245/35 R 20 95
Y XL
2.9 / 42
Front: 245/40 R 19 3.0 / 44
98 V XL M+S
Rear: 275/30 R 20
97 Y XL
-
3.2 / 46
-
Rear: 275/35 R 19
100 V XL M+S
-
3.1 / 45
Front: 245/40 R 19 2.8 / 41
98 V XL M+S
Tire marking
Rear: 275/35 R 19
100 V XL M+S
-
3.0 / 44
Tire size
245/45 R 18 96 Y
245: nominal width in mm
45: cross-sectional relationship in %
R: radial tire code
18: rim diameter in inches
96: load index
Y: speed code letter
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MOBILITY
ZR tires: reinforced radial tire for speeds ex-
ceeding 150 mph/240 km/h
Tire age
Recommendation
Regardless of the tire tread depth, replace tires
at least every 6 years.
Maximum tire load
Maximum tire load is the maximum permissi-
ble weight for which the tire is approved.
Manufacture date
You can find the manufacture date of the tire
on the tire sidewall.
Locate the maximum tire load on the tire
sidewall and the Gross Axle Weight Rating –
GAWR – on the certification label on the driver
door B-pillar. Divide the tire load by 1.1. It must
be greater than one-half of the vehicle’s Gross
Axle Weight Rating – GAWR. Note, front vs.
rear GAWR and tire loads, respectively.
Designation
Manufacture date
DOT … 0124
1st week of 2024
Uniform Tire Quality Grading
Quality grades can be found where applicable
on the tire sidewall between tread shoulder
and maximum section width.
Speed letter
Designation Maximum speed
Q
R
up to 100 mph/160 km/h
up to 106 mph/170 km/h
up to 112 mph/180 km/h
up to 118 mph/190 km/h
up to 131 mph/210 km/h
up to 150 mph/240 km/h
up to 167 mph/270 km/h
up to 186 mph/300 km/h
above 186 mph/300 km/h
E.g.: Treadwear 200; Traction AA; Tempera-
ture A
S
DOT Quality Grades
Treadwear
T
Traction AA A B C
Temperature A B C
H
V
All passenger vehicle tires must conform to
Federal Safety Requirements in addition to
these grades.
W
Y
(Y)
Treadwear
The treadwear grade is a comparative rating
based on the wear rate of the tire when tested
under controlled conditions on a specified gov-
ernment test course. E.g., a tire graded 150
would wear one and one-half, 1 g, times as
well on the government course as a tire graded
100. The relative performance of tires depends
upon the actual conditions of their use, how-
ever, and may depart significantly from the
norm due to variations in driving habits, service
practices and differences in road characteris-
tics and climate.
Tire Identification Number
DOT code: DOT xxxx xxx 0124
xxxx: manufacturer code for the tire brand
xxx: tire size and tire design
0124: tire age
Tires with DOT codes meet the guidelines of
the U.S. Department of Transportation.
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MOBILITY
Traction
M+S
The traction grades, from highest to lowest,
are AA, A, B, and C.
Winter tires, as well as all-season tires with
better winter performance than summer tires,
can be identified by the M+S marking on the
tire side wall.
Those grades represent the tire's ability to
stop on wet pavement as measured under
controlled conditions on specified government
test surfaces of asphalt and concrete. A tire
marked C may have poor traction perform-
ance.
Tire tread
Safety information
Warning
The traction grade assigned to this tire is
based on straight-ahead braking traction tests,
and does not include acceleration, cornering,
hydroplaning, or peak traction characteristics.
If the tire tread depth is too low, driving
safety may be impaired in critical situations
such as aquaplaning or slush on the road.
There is a risk of accident, injury, or property
damage. The tire tread depth may not fall
below 0.12 in/3 mm for summer tires and
0.16 in/4 mm for winter and all-season tires,
or observe the statutory regulations on mini-
mum tread depth.
Temperature
The temperature grades are A, the highest, B,
and C, representing the tire's resistance to the
generation of heat and its ability to dissipate
heat when tested under controlled conditions
on a specified indoor laboratory test wheel.
Sustained high temperature can cause the
material of the tire to degenerate and reduce
tire life, and excessive temperature can lead to
sudden tire failure. The grade C corresponds
to a level of performance which all passenger
car tires must meet under the Federal Motor
Vehicle Safety Standard No. 109. Grades Band
A represent higher levels of performance on
the laboratory test wheel than the minimum
required by law.
Minimum tread depth
Warning
The temperature grade for this tire is estab-
lished for a tire that is properly inflated and
not overloaded. Excessive speed, underinfla-
tion, or excessive loading, either separately
or in combination, can cause heat buildup
and possible tire failure.
Distributed over the tire circumference are
the tire manufacturer’s wear indicators with a
height of at least 0.06 in/1.6 mm, which serve
as an indicator of tire tread wear.
The positions of the wear indicators are
marked on the tire sidewall with TWI, Tread
Wear Indicator.
Runflat tires
Runflat tires, refer to page 319, are labeled
with a circular icon containing the letters RSC
marked on the tire sidewall.
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Wheels and tires
MOBILITY
Tire damage
Warning
The wheels, tires and chassis components
can become damaged when driving over
curbs, road damage, or other obstacles.
Larger wheels have a smaller tire cross-sec-
tion. The smaller the tire cross-section, the
higher the risk of tire damage. There is a
risk of accident, injury, or property damage. If
possible, avoid driving over curbs, road dam-
age or other obstacles, or drive over them
slowly and carefully.
General information
Check your tires regularly for damage, foreign
objects lodged in the tread, and tread wear.
Indications of tire damage or other vehicle mal-
functions:
▷
▷
▷
Unusual vibrations.
Unusual tire or running noises.
Unusual vehicle handling such as a strong
tendency to pull to the left or right.
▷
Uneven wear pattern, e.g., increased wear
in the area of the tire shoulder.
Exchanging wheels and
tires
Damage can be caused by the following situa-
tions, for instance:
▷
▷
▷
▷
▷
Driving over curbs.
Road damage.
Mounting and wheel balancing
Have the wheel mounted and balanced by an
authorized service center or another qualified
service center or repair shop.
Tire pressure too low.
Vehicle overloading.
Incorrect tire storage.
Suitable wheels and tires
Safety information
General information
Only certain wheel/tire combinations are suit-
able depending on vehicle and equipment.
The vehicle manufacturer determines wheel/
tire combinations on the basis of the following
criteria:
Warning
Damaged tires can lose tire inflation pres-
sure, which can lead to loss of vehicle control.
There is a risk of accident, injury, or property
damage. If tire damage is suspected while
driving, immediately reduce speed and stop.
Have wheels and tires checked. To do so,
drive carefully to an authorized service center
or another qualified service center or repair
shop. Have the vehicle towed or transported
as needed. Do not repair damaged tires, but
have them replaced.
▷
▷
Tire size, e.g., tire width, aspect ratio.
Wheel size, e.g., rim diameter, offset.
For more information on wheel/tire combina-
tions and special equipment, contact an au-
thorized service center or another qualified
service center or repair shop.
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Wheels and tires
MOBILITY
Safety information
Recommended tire brands
Warning
Wheels and tires that are not suitable for
the vehicle can damage parts of the vehicle.
There is a risk of accident, injury, or prop-
erty damage. The vehicle manufacturer rec-
ommends that you use only wheels and tires
that have been recommended for the vehicle
type.
Tire types are developed for each vehicle and
optimized specifically for the individual require-
ments of that vehicle, e.g.:
Warning
▷
▷
▷
Vehicle handling.
Comfort.
Mounted steel wheels can cause technical
problems, for instance unexpected loosening
of the lug bolts and damage to the brake
disks. There is a risk of accident, injury,
or property damage. Do not mount steel
wheels.
Noise characteristics.
Specially developed tires are marked with
a star on the tire sidewall. After replacing
wheels and tires, the vehicle manufacturer rec-
ommends using star-marked tires again. The
vehicle manufacturer recommends that you
use tires of the same make and tread design.
Warning
Wheel/tire combinations that are not suitable
for the vehicle can affect vehicle handling
and a number of system functions, e.g.,the
Antilock Braking System or Dynamic Stability
Control. There is a risk of accident, injury, or
property damage. The manufacturer of the
vehicle recommends that you use wheels and
tires that have been recommended by the
vehicle manufacturer for the vehicle type. Fol-
lowing tire damage, have the original wheel/
tire combination remounted on the vehicle as
soon as possible.
New tires
Tire traction is not optimal due to manufactur-
ing circumstances when tires are brand new.
Drive conservatively for the first
200 miles/300 km.
Retreaded tires
Warning
Retreated tires can have different tire casing
structures. With advanced age the service life
can be limited. There is a risk of accident,
injury, or property damage. The manufacturer
of the vehicle does not recommend the use of
retreaded tires.
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Wheels and tires
MOBILITY
Maximum speed
Changing runflat tires
When changing from runflat tires to standard
tires, it must be ensured that the vehicle con-
tains an emergency wheel or tire mobility kit.
For more information, contact an authorized
service center or another qualified service cen-
ter or repair shop.
Safety information
Warning
If the maximum permissible speed of your
mounted tires is exceeded, the tires may be
damaged. There is a risk of accident, injury,
or property damage. Do not exceed the maxi-
mum permissible speed of the tires.
Wheel change between axles
Warning
A wheel change between the axles on vehi-
cles with different tire sizes or rim sizes on
the front and rear axles can cause damage
to the tires and the vehicle. There is a risk of
accident, injury, or property damage. Do not
rotate the tires between the axles on vehicles
with different tire sizes or rim sizes on the
front and rear axles.
Maximum speed of winter tires
If the maximum speed of the vehicle is higher
than the permissible speed of the winter tires,
the maximum permissible speed must be indi-
cated with a sign placed in the field of vision.
The info label is available from an authorized
service center or another qualified service cen-
ter or repair shop.
Winter tires
Storing tires
General information
Tire pressure
Do not exceed the maximum tire inflation pres-
sure indicated on the tire sidewall.
Storage
▷
Store wheels and tires in a cool, dry and
dark place.
▷
Always protect tires against all contact with
oil, grease, and solvents.
▷
▷
Do not leave tires in plastic bags.
Remove dirt from wheels or tires.
Winter tires are recommended for operating on
winter roads.
Winter tires can be identified by the icon with
mountain and snowflake, as well as the M+S
marking on the tire sidewall.
Runflat tires
Principle
All-season tires with the M+S designation, but
without icon with mountain and snowflake,
have better winter characteristics than summer
tires but generally do not achieve the perform-
ance of winter tires.
Runflat tires permit continued driving under
limited conditions even in the event of a com-
plete tire pressure loss.
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Wheels and tires
MOBILITY
General information
Identification
The wheels consist of tires that are self-sup-
porting to a limited degree and may also in-
clude special rims.
The reinforcement of the sidewall allows the
tire to remain drivable to a limited degree in
the event of a tire pressure loss.
Follow the instructions for continued driving
with a flat tire.
Runflat tires are labeled with a circular icon
containing the letters RSC marked on the tire
sidewall.
Safety information
Warning
The vehicle handles differently when a runflat
tire has insufficient or no tire pressure; for
instance, reduced directional stability when
braking, braking distances are longer and the
self-steering properties will change. There is
a risk of accident, injury, or property damage.
Drive moderately and do not exceed a speed
of 50 mph/80 km/h.
Repairing a flat tire
Safety precautions
▷
Park the vehicle as far away as possible
from passing traffic and on solid ground.
▷
▷
Turn on the hazard warning system.
Secure the vehicle against rolling away by
setting the parking brake.
Warning
▷
▷
▷
Turn the steering wheel until the front
wheels are in the straight-ahead position
and engage the steering wheel lock.
Vibrations or loud noises while driving can
indicate the final failure of a tire. Tire com-
ponents may come loose. There is a risk of
accident, injury, or property damage. Reduce
your speed and stop. Do not continue driving.
Contact an authorized service center or an-
other qualified service center or repair shop.
Have all vehicle occupants get out and
make sure that they remain outside the
hazardous area such as behind a guardrail.
If necessary, set up a warning triangle at an
appropriate distance.
Tire repair set
Principle
The tire repair set is used to temporarily seal
minor tire damage so that it is possible to con-
tinue driving.
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MOBILITY
Compressor
General information
▷
The filled in tire sealant closes the damage
from the inside when it hardens.
▷
Follow the instructions for using the tire
repair set, which are provided on the com-
pressor and sealant bottle.
▷
▷
The tire repair set may be insufficient if the
tire damage measures more than approx.
0.16 in/4 mm.
Do not remove foreign objects that have
penetrated the tire. Remove foreign objects
only when they are visibly protruding from
the tire.
1
Compressor
2
3
4
5
6
Tire pressure display
Sealant bottle mount
▷
The compressor can be used to check the
tire inflation pressure.
Pressure reducing valve button
Connector for socket
Power switch
Overview
Storage
Safety precautions
Depending on vehicle equipment, the tire re-
pair set is stored as follows:
▷
Park the vehicle as far away as possible
from passing traffic and on solid ground.
▷
In the cargo area under the cargo floor
panel.
▷
▷
▷
Turn on the hazard warning system.
Set the parking brake.
▷
▷
In the cargo area on the left or right side.
In the cargo area behind a side trim panel.
Turn the steering wheel until the front
wheels are in the straight-ahead position
and engage the steering wheel lock.
Sealant bottle and filler hose
▷
As soon as permitted by the traffic flow,
have all vehicle occupants get out and
make sure that they remain outside the
hazardous area such as behind a guardrail.
▷
▷
If necessary, set up the hazard triangle or
hazard warning lights at an appropriate
distance.
Remove the warning label for the maximum
permissible speed from the sealant bottle
and attach it in the visible area in the vehi-
cle interior.
1
Sealant bottle
2
3
4
5
Sealant bottle outlet
Filler hose
Sealant bottle connection
Wheel valve connection
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Wheels and tires
MOBILITY
4. Unscrew the valve cap from the wheel and
screw the connecting piece of the filler hose
onto the valve.
Preparing the tire repair set
1. Insert the sealant bottle into the mount on
the housing of the compressor.
5. With the compressor switched off, insert the
connector into the power socket in the vehi-
cle interior.
2. Turn the sealant bottle clockwise by 90° to
the stop.
Filling the tire with sealing
compound
Safety information
DANGER
If the exhaust pipe is blocked or ventilation is
insufficient, harmful exhaust gases can pene-
trate the vehicle. The exhaust gases contain
pollutants which are colorless and odorless.
In enclosed areas, exhaust gases can also
accumulate outside of the vehicle. There is a
danger to life. Keep the exhaust pipe free and
ensure sufficient ventilation.
3. Connect the filler hose to the outlet of the
sealant bottle and turn clockwise by 90° to
the stop.
NOTICE
The compressor can overheat during ex-
tended operation. There is a risk of damage
to property. Do not run the compressor for
more than 10 minutes.
Filling the tire with sealing compound
1. With standby state or drive-ready state
switched on, switch on the compressor.
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MOBILITY
Let the compressor run for max. 10 minutes
to fill in the tire sealant and reach a tire
pressure of 2.5 bar/36 psi.
Tire sealant may spray from the damaged
area during the initial wheel rotations.
Adjusting the tire pressure
1. Stop at a suitable location.
While the tire is being filled with tire sealant,
the tire pressure can briefly reach approx.
6 bar/87 psi. Do not turn off the compres-
sor in this phase.
2. Connect the hose directly to the compres-
sor and turn clockwise by 90° until it audi-
bly engages.
2. Switch off the compressor.
3. Unscrew the valve cap from the wheel and
screw the connecting piece of the hose
onto the valve.
Checking the tire pressure
Read the tire pressure on the tire pressure dis-
play of the compressor. The tire pressure must
be at least 2.5 bar/36 psi.
Tire pressure too high
If the tire pressure is too high, reduce the tire
pressure with the pressure reducing valve on
the compressor.
Minimum tire inflation pressure is not
reached
Do not continue driving unless a minimum tire
pressure of 2.5 bar/36 psi is reached. Contact
an authorized service center or another quali-
fied service center or repair shop.
4. Insert the connector into the socket in the
vehicle interior.
5. Read the tire pressure on the tire pressure
display of the compressor.
Do not continue driving unless a minimum
tire pressure of 1.3 bar/19 psi is displayed.
Contact an authorized service center or an-
other qualified service center or repair shop.
Minimum tire inflation pressure is
reached
1. Pull the connector out of the socket in the
vehicle interior.
6. Correct the tire pressure to 2.5 bar/36 psi.
▷
Increase tire pressure: with standby or
drive-ready state turned on, turn on the
compressor and let it run for a maxi-
mum of 10 minutes.
2. Disconnect the hose from the sealant bottle
and the valve on the wheel.
3. Unscrew the valve cap.
4. Stow the tire repair set in the trunk.
▷
Reduce tire pressure: press the pressure
reducing valve button on the compres-
sor.
5. Immediately drive 6 miles/10 km to ensure
that the tire sealant is evenly distributed in
the tire.
Removing and stowing the tire
repair set
1. Switch off the compressor.
Do not exceed the permissible maximum
speed of 50 mph/80 km/h.
If possible, do not drive at speeds less than
12 mph/20 km/h.
2. Pull the connector out of the socket in the
vehicle interior.
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MOBILITY
3. Disconnect the hose from the compressor
and the valve on the wheel.
Warning
4. Unscrew the valve cap.
Insufficiently tight snow chains may damage
tires and vehicle components. There is a risk
of accident, injury, or property damage. Make
sure that the snow chains are always suf-
ficiently tight. Re-tighten as needed accord-
ing to the snow chain manufacturer's instruc-
tions.
5. Stow the tire repair set together with the
hose in the trunk.
Continuing the trip
Do not exceed the permissible maximum
speed of 50 mph/80 km/h.
Do not exceed a maximum distance traveled of
125 miles/200 km.
Fine-link snow chains
Re-initialize the flat tire monitor or reset the
Tire Pressure Monitor.
The manufacturer of the vehicle recommends
the use of fine-link snow chains. Certain types
of fine-link snow chains have been tested by
the manufacturer of the vehicle and recom-
mended as road-safe.
Replace the faulty tire and the sealant bottle
from the tire repair set as soon as possible.
Additional information:
For information on suitable snow chains, con-
tact an authorized service center or another
qualified service center or repair shop.
▷
▷
Flat tire monitor, refer to page 332.
Tire pressure monitor, refer to page 325.
System limits
If the tire cannot be made drivable, contact an
authorized service center or another qualified
service center or repair shop.
Use
Use only in pairs on the rear wheels, equipped
with the tires of the following size:
▷
▷
245/45 R18.
245/40 R19.
With the Tire Pressure Monitor: using sealant
can damage the wheel electronics. In this case,
have the electronics checked and replaced at
the next opportunity.
Information on the wheel size and rim offset is
located on the inside of the wheel.
The list can also include wheel/tire sizes that
are only suitable for certain models.
Snow chains
Safety information
Warning
Information on wheels and tires approved for
the vehicle can be requested from an author-
ized service center or another qualified service
center or repair shop.
Follow the snow chain manufacturer's instruc-
tions.
Mounting snow chains on unsuitable tires
can cause the snow chains to come into
contact with vehicle parts. There is a risk of
accident, injury, or property damage. Only
fit snow chains on tires recommended by
the vehicle manufacturer for use with snow
chains.
Do not initialize the flat tire monitor after
mounting snow chains, as doing so may result
in incorrect readings.
Do not reset the Tire Pressure Monitor after
mounting snow chains, as doing so may result
in incorrect readings.
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When driving with snow chains, activate the
Dynamic Traction Control briefly to optimize
the drive power.
Tire pressure monitor
Principle
Maximum speed with snow chains
Do not exceed a speed of 30 mph/50 km/h
when using snow chains.
The Tire Pressure Monitor monitors the tire
pressure and issues a warning if the tire pres-
sure has dropped.
General information
Sensors in the tire valves measure the tire in-
flation pressure and tire temperature.
Rear-wheel steering during
operation with snow chains
General information
Depending on the tires detected or registered,
the system displays the specified nominal
pressures on the control display and compares
them with the current tire pressures.
In order to guarantee free movement of the
wheels when operating with snow chains, rear
axle steering of the integral active steering
must be switched off when snow chains are
mounted.
If tires are being used that are not specified
in the tire inflation pressure details on the ve-
hicle such as tires with special approval, the
system needs to be actively reset. The system
will then take over the actual tire inflation pres-
sures as the target pressures.
Safety information
Warning
When operating the system, also note the in-
formation found in the Tire inflation pressure
chapter.
When rear-wheel steering is switched on and
snow chains are mounted, there can be con-
tact between snow chains and the body.
There is a risk of accident, injury, or property
damage. With mounted snow chains, switch
off the rear-wheel steering.
Additional information:
Tire inflation pressure, refer to page 310.
Safety information
Switching off rear-wheel steering
The rear-wheel steering is switched off by
specifying that snow chains are installed.
Warning
The display of the target pressures is not
a substitute for the tire inflation pressure de-
tails on the vehicle. Incorrect entries in the
tire settings can lead to incorrect target tire
inflation pressure values. In this case, it can-
not be guaranteed that the notification of a
tire pressure loss will be reliable. There is a
risk of injury and risk of damage to property.
Make sure that the sizes of your mounted
tires are displayed correctly and match the
information on the tires and the tire inflation
pressure specifications on the vehicle.
1. "CAR"
2. "Settings"
3. "General settings"
4. "Snow chains"
5. "Snow chains installed"
Starting with the permissible maximum speed
with snow chains of 30 mph/50 km/h the rear
axle steering will be switched on again auto-
matically.
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MOBILITY
6. "Manual"
Functional requirements
The following prerequisites must be met for
the system; otherwise, reliable notification of a
tire pressure loss is not assured:
7. "Tire type"
8. Select the tire type that is mounted on the
rear axle.
▷
Every time a tire or wheel is changed, the
correct details on the mounted tires must
be entered in the tire settings.
For tires with special approval:
"Other tires"
Observe further proceeding in the perform
a reset section.
▷
The Tire Pressure Monitor does not acti-
vate until after driving for a few minutes:
9. Select the maximum road speed that will be
used with the tires.
▷
▷
After a tire or wheel change.
After a reset, for tires with special ap-
proval.
10. "Save tire settings"
The measurement of the current tire inflation
pressure is started. The measurement prog-
ress is displayed.
▷
After changing the tire setting.
▷
▷
For tires with special approval:
▷
After a tire or wheel change, a reset was
performed with the correct tire inflation
pressure.
Status display
Current status
The system status can be displayed on the
control display, e.g., whether or not the system
is active.
▷
After the tire inflation pressure was ad-
justed to a new value, a reset was per-
formed.
Wheels with wheel electronics.
1. "CAR"
Tire settings
2. "Vehicle status"
3.
"Tire Pressure Monitor"
General information
The tire sizes of the mounted tires can be
gathered from the tire inflation pressure details
on the vehicle or directly on the tires.
The current status is displayed.
Current tire pressure
The current tire pressure is displayed for each
tire.
The tire details do not need to be re-entered
when the tire pressure is corrected.
The current tire inflation pressures may
change while driving or depending on the out-
side temperature.
For summer and winter tires, the tire details
entered last are stored. After a tire or wheel
change, the settings of the tire sets used last
can be selected.
Current tire temperature
Changing settings
1. "CAR"
Depending on the model, the current tire tem-
peratures are displayed.
The current tire temperatures may change
while driving or due to the outside tempera-
ture.
2. "Vehicle status"
3.
"Tire Pressure Monitor"
4. "Tire settings"
5. "Tire selection"
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Nominal pressure
Gray wheels
The nominal pressure for the tires on the front
and rear axles is displayed.
It may not be possible to identify tire pressure
losses.
The specified nominal pressures take the in-
fluence of driving and outside temperature on
the tire temperature into account. The appro-
priate nominal pressure is always displayed,
independent of the weather situation, tire tem-
peratures and travel times.
Possible causes:
▷
▷
Malfunction.
During tire inflation pressure measurement,
after confirmation of the tire settings.
▷
For tires with special approval: a reset is
performed for the system.
The displayed nominal pressure may change
and may differ from the tire inflation pressure
details on the door pillar of the driver's door.
The tire inflation pressure can thus be cor-
rected to the value of the displayed target
pressures.
For tires with special approval:
performing a reset
1. "CAR"
2. "Vehicle status"
The nominal pressure is immediately adjusted
if the vehicle load state is changed in the tire
settings.
3. "Tire Pressure Monitor"
4. Make sure that correct tire settings have
been made.
Tire settings, refer to page 326.
Tire conditions
5. Turn on drive-ready state and do not drive
off.
General information
Tire and system status are indicated by the
color of the wheels and a text message on the
control display.
6. Reset tire pressure: "Perform reset".
7. Drive off.
The wheels are displayed in gray and the fol-
lowing is displayed: "Resetting tire pressure…".
Any existing messages may not be deleted if
the nominal pressure is not reached after the
tire inflation pressure is corrected.
After a travel time of several minutes, the set
tire inflation pressures are accepted as the
predefined tire inflation pressures. The reset is
completed automatically while driving.
All wheels green
▷
The system is active and bases warnings
on the target pressures.
After a successfully completed reset, the
wheels on the control display are shown in
green and the following is displayed: "Reset
successful."
▷
For tires with special approval: the system
is active and bases warnings on the tire
inflation pressures stored during the last re-
set.
You may interrupt this trip at any time. When
you continue driving the reset resumes auto-
matically.
One to four yellow wheels
A flat tire or major tire pressure loss has occur-
red in the indicated tires.
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MOBILITY
If the tire inflation pressure is too low
Messages: for tires without special
approval
Message
General information
When a flat tire is indicated, the Dynamic Sta-
bility Control may be turned on.
A yellow warning light is illuminated in
the instrument cluster.
In addition, an icon with a Check Control mes-
sage appears on the control display.
Safety information
Icon
Possible cause
Warning
There is a tire pressure loss.
A damaged regular tire with low or no tire
inflation pressure impacts handling such as
steering and braking response. Runflat tires
can maintain limited stability. There is a risk
of accident. Do not continue driving if the
vehicle is equipped with normal tires. Follow
the information on runflat tires and continued
driving with these tires.
Measure
1. Reduce the vehicle speed. Do not exceed a
speed of 80 mph/130 km/h.
2. At the next opportunity, for instance at a fill-
ing station, check the tire inflation pressure
in all four tires and correct if necessary.
If a tire inflation pressure check is
required
If there is a significant tire pressure
loss
Message
Message
An icon with a Check Control message appears
on the control display.
A yellow warning light is illuminated in
the instrument cluster.
Icon
Possible cause
In addition, an icon with the affected tire ap-
pears in a Check Control message on the con-
trol display.
Leak detected on the tire.
Inflation was not carried out accord-
ing to specifications, for instance
when the tire has not been suffi-
ciently inflated or in the case of a nat-
ural steady tire pressure loss.
Icon
Possible cause
There is a flat tire or a major tire
pressure loss.
Measure
Measure
Check the tire pressure and correct as needed.
1. Reduce your speed and stop cautiously.
Avoid sudden braking and steering maneu-
vers.
2. Check whether the vehicle is fitted with
standard tires or runflat tires.
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Runflat tires are labeled with a circular icon
containing the letters RSC marked on the
tire sidewall.
Icon
Possible cause
Inflation was not carried out accord-
ing to specifications, e.g., the tire has
not been sufficiently inflated.
Runflat tires, refer to page 319.
3. Read the description on what to do in case
of a flat tire.
The system has detected a wheel
change, but no reset was done.
Actions in the event of a flat tire, refer to
page 330.
The tire inflation pressure has fallen
below the level of the last reset.
No reset was performed for the sys-
tem. The system issues a warning
based on the tire inflation pressures
stored during the last reset.
Messages: for tires with special
approval
General information
When a flat tire is indicated, the Dynamic Sta-
bility Control may be turned on.
Measure
1. Check the tire pressure and correct as
needed.
Safety information
2. Perform a system reset.
If the tire inflation pressure is too low
Message
Warning
A damaged regular tire with low or no tire
inflation pressure impacts handling such as
steering and braking response. Runflat tires
can maintain limited stability. There is a risk
of accident. Do not continue driving if the
vehicle is equipped with normal tires. Follow
the information on runflat tires and continued
driving with these tires.
A yellow warning light is illuminated in
the instrument cluster.
In addition, an icon with a Check Control mes-
sage appears on the control display.
Icon
Possible cause
There is a tire pressure loss.
If a tire inflation pressure check is
required
No reset was performed for the sys-
tem. The system issues a warning
based on the tire inflation pressures
stored during the last reset.
Message
An icon with a Check Control message appears
on the control display.
Measure
1. Reduce the vehicle speed. Do not exceed a
speed of 80 mph/130 km/h.
2. At the next opportunity, for instance at a fill-
ing station, check the tire inflation pressure
in all four tires and correct if necessary.
3. Reset the system.
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For tires with special approval: when the
tire pressure in all four tires is correct, the
Tire Pressure Monitor may not have been
reset. In this case, perform the reset.
If there is a significant tire pressure
loss
Message
If no tire damage can be identified, con-
tact an authorized service center or another
qualified service center or repair shop.
A yellow warning light is illuminated in
the instrument cluster.
In addition, an icon with the affected tire ap-
pears in a Check Control message on the con-
trol display.
2. Repair the flat tire, e.g., with a flat tire kit or
by changing the wheel.
Use of sealing compound, for instance from
the flat tire kit, may damage the wheel elec-
tronics. Have the electronics replaced at the
next opportunity.
Icon
Possible cause
There is a flat tire or a major tire
pressure loss.
Runflat tires
No reset was performed for the sys-
tem. The system issues a warning
based on the tire inflation pressures
stored during the last reset.
Safety information
Warning
Measure
The vehicle handles differently when a runflat
tire has insufficient or no tire pressure; for
instance, reduced directional stability when
braking, braking distances are longer and the
self-steering properties will change. There is
a risk of accident, injury, or property damage.
Drive moderately and do not exceed a speed
of 50 mph/80 km/h.
1. Reduce your speed and stop cautiously.
Avoid sudden braking and steering maneu-
vers.
2. Check whether the vehicle is fitted with
standard tires or runflat tires.
Runflat tires are labeled with a circular icon
containing the letters RSC marked on the
tire sidewall.
Runflat tires, refer to page 319.
Warning
3. Read the description on what to do in case
of a flat tire.
Vibrations or loud noises while driving can
indicate the final failure of a tire. Tire com-
ponents may come loose. There is a risk of
accident, injury, or property damage. Reduce
your speed and stop. Do not continue driving.
Contact an authorized service center or an-
other qualified service center or repair shop.
Actions in the event of a flat tire, refer to
page 330.
Actions in the event of a flat tire
Standard tires
1. Identify the damaged tire.
Maximum speed
Check the tire pressure in all four tires,
for instance using the tire pressure display
of a flat tire kit.
You may continue driving with a damaged tire
at speeds up to 50 mph/80 km/h.
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Continued driving with a flat tire
The tire inflation pressure is reduced when the
tire temperature falls again.
Follow the following when continuing to drive
with a damaged tire:
These circumstances may cause a warning
when temperatures fall very sharply.
1. Avoid sudden braking and steering maneu-
vers.
Following a temperature-related warning, the
target pressures are displayed on the control
display again after a short distance.
2. Do not exceed a speed of
50 mph/80 km/h.
3. Check the tire inflation pressure in all four
tires at the next opportunity.
Sudden tire pressure loss
The system cannot indicate sudden serious
tire damage caused by external circumstances.
Possible distance traveled with a
depressurized tire
Failure performing a reset
The possible distance traveled varies depend-
ing on how the vehicle is loaded and used, e.g.,
speed, road conditions, outside temperature.
The distance traveled may be less but may
also be more if an economical driving style is
used.
Tires with special approval: the system will not
function correctly if a reset was not performed,
for example a flat tire may be indicated al-
though the tire inflation pressures are correct.
Malfunction
If the vehicle is loaded with an average
weight and used under favorable conditions,
the possible distance traveled may be up to
50 miles/80 km.
Message
The yellow warning light flashes and is
then illuminated continuously. A Check
Control message is displayed. It may
Vehicle handling with damaged tires
not be possible to identify tire pressure losses.
Vehicles driven with a damaged tire will han-
dle differently, potentially leading to conditions
such as the following:
Measure
▷
▷
▷
Greater likelihood of skidding of the vehicle.
Longer braking distances.
▷
A wheel without wheel electronics is
mounted: have the wheels checked, if
needed.
Changed self-steering properties.
▷
Fault caused by systems or devices with
the same radio frequency: after leaving the
area of the interference, the system auto-
matically becomes active again.
Modify your driving style. Avoid abrupt steering
or driving over obstacles, for instance curbs or
potholes.
▷
▷
For tires with special approval: the system
was unable to complete the reset. Perform
a system reset again.
System limits
Temperature
The tire inflation pressure depends on the
tire's temperature.
Tire Pressure Monitor malfunction: have
the vehicle checked by an authorized serv-
ice center or another qualified service cen-
ter or repair shop.
Driving or exposure to the sun will increase the
tire temperature, thus increasing the tire infla-
tion pressure.
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vehicle that prevent the TPMS from function-
ing properly. Always check the TPMS malfunc-
tion telltale after replacing one or more tires
or wheels on the vehicle to ensure that the re-
placement or alternate tires and wheels allow
the TPMS to continue to function properly.
Declaration according to NHTSA/
FMVSS 138 Tire Pressure Monitoring
System
Each tire, including the spare (if provided)
should be checked monthly when cold and in-
flated to the inflation pressure recommended
by the vehicle manufacturer on the vehicle
placard or tire inflation pressure label. (If the
vehicle has tires of a different size than the
size indicated on the vehicle placard or tire
inflation pressure label, you should determine
the proper tire inflation pressure for those
tires.) As an added safety feature, the vehi-
cle has been equipped with a tire pressure
monitoring system (TPMS) that illuminates a
low tire pressure telltale when one or more
of your tires is significantly under-inflated. Ac-
cordingly, when the low tire pressure telltale
illuminates, you should stop and check your
tires as soon as possible, and inflate them to
the proper pressure. Driving on a significantly
under-inflated tire causes the tire to overheat
and can lead to tire failure. Under-inflation also
reduces fuel efficiency and tire tread life, and
may affect the vehicle's handling and stopping
ability. Please note that the TPMS is not a
substitute for proper tire maintenance, and it
is the driver's responsibility to maintain correct
tire pressure, even if under-inflation has not
reached the level to trigger illumination of the
TPMS low tire pressure telltale. The vehicle
has also been equipped with a TPMS malfunc-
tion indicator to indicate when the system is
not operating properly. The TPMS malfunction
indicator is combined with the low tire pres-
sure telltale. When the system detects a mal-
function, the telltale will flash for approximately
one minute and then remain continuously il-
luminated. This sequence will continue upon
subsequent vehicle start-ups as long as the
malfunction exists. When the malfunction indi-
cator is illuminated, the system may not be
able to detect or signal low tire pressure as
intended. TPMS malfunctions may occur for a
variety of reasons, including the installation of
replacement or alternate tires or wheels on the
Flat tire monitor
Principle
The flat tire monitor detects a tire pressure
loss while driving and issues a warning if the
tire pressure has dropped.
General information
The system detects tire pressure loss on the
basis of rotation speed differences between
the individual wheels while driving.
In the event of a tire pressure loss, the diam-
eter and therefore the rate of rotation of the
corresponding wheel changes. The difference
will be detected and reported as a flat tire.
The system does not measure the actual infla-
tion pressure in the tires.
Functional requirements
The following prerequisites must be met for
the system; otherwise, reliable notification of a
tire pressure loss is not assured:
▷
After a tire or wheel change, an initialization
was performed with the correct tire inflation
pressure.
▷
After the tire pressure was adjusted to a
new value, an initialization was performed.
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MOBILITY
Safety information
Status display
The current status of the flat tire monitor can
be displayed, e.g., whether the flat tire monitor
is active.
Warning
A damaged regular tire with low or no tire
inflation pressure impacts handling such as
steering and braking response. Runflat tires
can maintain limited stability. There is a risk
of accident. Do not continue driving if the
vehicle is equipped with normal tires. Follow
the information on runflat tires and continued
driving with these tires.
1. "CAR"
2. "Vehicle status"
3.
"Flat Tire Monitor"
The status is displayed.
Initialization required
An initialization must be performed in the fol-
lowing situations:
Indication of a flat tire
▷
After the tire inflation pressure has been
adjusted.
A yellow warning light is illuminated in
the instrument cluster.
▷
After a tire or wheel change.
In addition, an icon with a Check Control mes-
sage appears on the control display.
Performing initialization
When initializing, the set tire inflation pressures
serve as reference values in order to detect a
flat tire. Initialization is started by confirming
the tire inflation pressures.
Icon
Possible cause
There is a flat tire or a major tire
pressure loss.
Do not initialize the system when driving with
snow chains.
Measure
1. "CAR"
1. Reduce your speed and stop cautiously.
Avoid sudden braking and steering maneu-
vers.
2. "Vehicle status"
3. "Flat Tire Monitor"
2. Check whether the vehicle is fitted with
standard tires or runflat tires.
4. Turn on drive-ready state and do not drive
off.
Runflat tires are labeled with a circular icon
containing the letters RSC marked on the
tire sidewall.
5. Start the initialization with: "Perform reset"
6. Drive off.
The initialization is completed while driving,
which can be interrupted at any time.
Runflat tires, refer to page 319.
The initialization automatically continues when
driving continues.
Actions in the event of a flat tire
Standard tires
1. Identify the damaged tire.
Messages
To do this, check the tire pressure in all four
tires, for instance using the tire pressure
display of a flat tire kit.
General information
When a flat tire is indicated, the Dynamic Sta-
bility Control (DSC) is turned on, if needed.
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When the tire inflation pressure in all four
tires is correct, the flat tire monitor may not
have been initialized. In this case, initialize
the system.
Continued driving with a flat tire
Follow the following when continuing to drive
with a damaged tire:
1. Avoid sudden braking and steering maneu-
vers.
If tire damage cannot be identified, contact
an authorized service center or another
qualified service center or repair shop.
2. Do not exceed a speed of
50 mph/80 km/h.
2. Repair the flat tire, e.g., with a flat tire kit or
by changing the wheel.
3. Check the tire inflation pressure in all four
tires at the next opportunity.
Runflat tires
When the tire inflation pressure in all four
tires is correct, the flat tire monitor may not
have been initialized. In this case, initialize
the system.
Safety information
Warning
Possible distance traveled with a
depressurized tire
The vehicle handles differently when a runflat
tire has insufficient or no tire pressure; for
instance, reduced directional stability when
braking, braking distances are longer and the
self-steering properties will change. There is
a risk of accident, injury, or property damage.
Drive moderately and do not exceed a speed
of 50 mph/80 km/h.
The possible distance traveled varies depend-
ing on how the vehicle is loaded and used, e.g.,
speed, road conditions, outside temperature.
The distance traveled may be less but may
also be more if an economical driving style is
used.
If the vehicle is loaded with an average
weight and used under favorable conditions,
the possible distance traveled may be up to
50 miles/80 km.
Warning
Vibrations or loud noises while driving can
indicate the final failure of a tire. Tire com-
ponents may come loose. There is a risk of
accident, injury, or property damage. Reduce
your speed and stop. Do not continue driving.
Contact an authorized service center or an-
other qualified service center or repair shop.
Vehicle handling with damaged tires
Vehicles driven with a damaged tire will han-
dle differently, potentially leading to conditions
such as the following:
▷
▷
▷
Greater likelihood of skidding of the vehicle.
Longer braking distances.
Changed self-steering properties.
Maximum speed
Modify your driving style. Avoid abrupt steering
or driving over obstacles, for instance curbs or
potholes.
You may continue driving with a damaged tire
at speeds up to 50 mph/80 km/h.
System limits
The system could be delayed or malfunction in
the following situations:
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MOBILITY
▷
▷
A natural, even tire pressure loss in all
four tires will not be recognized. Therefore,
check the tire inflation pressure regularly.
Warning
Placing supports, e.g., wooden blocks or sim-
ilar, under the jack may reduce its ability to
bear weight because of the limited height.
The load-carrying capacity of the wooden
blocks may be exceeded and the vehicle may
tip over. There is a risk of injury or danger to
life. Do not place supports under the jack.
Sudden serious tire damage caused by ex-
ternal circumstances cannot be recognized
in advance.
▷
▷
▷
The system has not been initialized.
When driving on a snowy or slippery road.
Sporty driving style: slip on traction wheels,
high lateral acceleration (drifting).
▷
When driving with snow chains.
Warning
The jack, issued by the vehicle manufacturer,
is provided in order to perform a wheel
change in the event of a breakdown. The
jack is not designed for frequent use, e.g.,
changing from summer to winter tires. Using
the jack frequently may cause it to become
jammed or damaged. There is a risk of injury
and risk of damage to property. Only use the
jack to change an emergency or spare wheel
in the event of a breakdown.
Changing wheels/tires
General information
When using runflat tires or a flat tire kit, a
wheel does not always need to be changed
immediately in case of a breakdown when
there is a tire pressure loss due to a flat tire.
If necessary, a suitable wheel change tool, e.g.,
a jack, is available as an accessory from an
authorized service center or another qualified
service center or repair shop.
Warning
The jack may slip on soft, uneven, or slippery
ground, e.g., snow, ice, tiles, etc. There is a
risk of injury. If possible, change the wheel on
a flat, solid, slip-resistant surface.
Safety information
Warning
The jack is only provided for short-term lifting
of the vehicle for wheel changes. Even if all
safety precautions are observed, there is a
risk of the raised vehicle falling if the jack tips
over. There is a risk of injury or danger to life.
When the vehicle is raised with the jack, do
not lie under the vehicle and do not switch on
the drive-ready state.
Warning
The jack is optimized for lifting the vehicle
and for the jacking points on the vehicle only.
There is a risk of injury. Do not lift any other
vehicle or cargo using the jack.
Warning
When the jack is not inserted into the jacking
point provided for this purpose, the vehicle
may be damaged or the jack may slip when
it is being cranked up. There is a risk of injury
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or risk of damage to property. When cranking
up the jack, ensure that it is inserted in the
jacking point next to the wheel well.
On a level surface
Warning
A vehicle that is raised on a jack may fall
off of the jack if lateral forces are exerted on
it. There is a risk of injury and risk of dam-
age to property. While the vehicle is raised,
do not exert lateral effort on the vehicle or
pull abruptly on the vehicle. Have a stuck
wheel removed by an authorized service cen-
ter or another qualified service center or re-
pair shop.
Place chocks or other suitable objects in front
and behind the wheel that is diagonal to the
wheel being changed.
On a slight downhill gradient
NOTICE
Using an impact wrench to loosen or tighten
the wheel lock bolt can damage the wheel
lock bolt. There is a risk of damage to prop-
erty. Only use a lug wrench to loosen and
tighten the wheel lock bolt.
Securing the vehicle against rolling
away
If it is necessary to change a wheel on a slight
downhill gradient, place chocks and other suit-
able objects, e.g., rocks, under the wheels of
the front and rear axles, against the direction
that the vehicle will move.
General information
The vehicle manufacturer recommends to ad-
ditionally secure the vehicle against rolling
away when changing a wheel.
Lug bolt lock
Principle
The wheel lug bolts have a special coding. The
lug bolts can only be released with the adapter
which matches the coding.
Overview
Depending on vehicle equipment, store the lug
bolt lock adapter as follows:
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In the cargo area under the cargo floor
panel.
make sure that they remain outside the
hazardous area such as behind a guardrail.
▷
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In the cargo area on the left or right side.
In the cargo area behind a side trim panel.
▷
▷
Depending on the vehicle equipment, get
wheel change tools and, if necessary, the
emergency wheel from the vehicle.
If necessary, set up a warning triangle or
portable hazard warning light at an appro-
priate distance.
▷
▷
Secure the vehicle additionally against roll-
ing away.
Loosen the lug bolts a half turn.
Jacking points
▷
▷
Lug lock bolt, arrow 1.
Adapter, arrow 2.
Unscrewing
1. Attach the adapter to the lug lock bolt.
2. Unscrew the lug lock bolt.
3. Remove the adapter after unscrewing the
lug bolt.
The jacking points are located at the indicated
positions.
Screwing on
1. Attach the adapter to the lug lock bolt. If
necessary, turn the adapter until it fits on
the lug lock bolt.
Jacking up the vehicle
2. Screw on the lug lock bolt. The tightening
torque is 101 lbs ft/140 Nm.
Warning
Hands and fingers can be jammed when us-
ing the jack. There is a risk of injury. Comply
with the described hand position and do not
change this position while using the jack.
3. Remove the adapter and stow it after
screwing on the lug bolt.
Preparing the vehicle
▷
Park the vehicle on solid and non-slip
ground at a safe distance from road traffic.
▷
▷
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Turn on the hazard warning system.
Set the parking brake.
Engage a gear or move the selector lever to
position P.
▷
As soon as permitted by the traffic flow,
have all vehicle occupants get out and
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5. Make sure that the car jack foot extends
vertically and is at a right angle beneath the
jacking point.
1. Hold the vehicle jack with one hand, ar-
row 1, and grasp the jack crank handle or
lever with your other hand, arrow 2.
6. Crank the vehicle up until the vehicle jack
has the entire surface on the ground
and the relevant wheel is maximum 1.2 in-
ches/3 cm above ground.
2. Insert the jack into the rectangular recess of
the jacking point closest to the wheel to be
changed.
Mounting a wheel
Mount one emergency wheel only, as required.
1. Unscrew the lug bolts.
2. Remove the wheel.
3. Put the new wheel or emergency wheel on
and screw in at least two lug bolts in a
crosswise pattern until hand-tight.
3. Extend the jack by turning the jack crank
handle or lever clockwise.
When non-original light-alloy wheels of the
vehicle manufacturer are mounted, the ac-
companying lug bolts may have to be used
as well.
4. Hand-tighten the remaining lug bolts and
tighten all lug bolts well in a crosswise pat-
tern.
5. Turn the jack crank handle counterclock-
wise to retract the jack and lower the vehi-
cle.
6. Remove the jack and stow it securely.
4. Take your hand away from the jack as soon
as the jack is under load and continue turn-
ing the jack crank handle or lever with one
hand.
After the wheel change
1. Tighten the lug bolts crosswise. The tight-
ening torque is 101 lbs ft/140 Nm.
2. Stow the faulty wheel in the cargo area, if
necessary.
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3. Check tire inflation pressure at the next op-
portunity and correct as needed.
4. Re-initialize the flat tire monitor or reset the
Tire Pressure Monitor.
5. Check to make sure the lug bolts are tight
with a calibrated torque wrench.
6. Drive to the nearest authorized service cen-
ter or another qualified service center or
repair shop, then have the damaged tire
replaced.
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