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EnglishOwner service procedures -> Repairing a flat tire for your BMW 3 Series 1997-2006
Lamps and bulbs
Repairing a flat tire
139
Precautions in case of a flat tire:
Stop the vehicle as far as possible
from passing traffic; switch on the haz-
ard warning flashers.
Turn the steering wheel to the straight-
ahead position and engage the steering
lock. Shift into 1st or reverse and
engage the parking brake.
Using the M Mobility system
To repair a flat tire using the M Mobility
system, proceed as follows:
>Preparing the M Mobility system for
use, refer to the next column
>This is part of the M Mobility system,
refer to page 140
>Filling with sealant, refer to page 141
>Distributing sealant, refer to
page 141
>Inflating tire to correct pressure, refer
to page 142.
All passengers should be outside the
vehicle and well away from your imme-
diate working area – behind a guardrail,
for instance.
If necessary, set up your warning trian-
gle or portable hazard warning lamp on
the roadside at an appropriate distance
from the rear of the vehicle. Comply
License plate lamps
5 watt bulb
1. Place a screwdriver in the slot and
press toward the left – see arrow – to with all safety guidelines and regula-
tions.<
release the lens
2. Replace the bulb.
M Mobility system
You will find an M Mobility system in
your BMW M3 convertible for repairing
flat tires. With this system you can
apply a sealing liquid to the inside of
the tire that seals off the damaged point
and then continue driving.
The M Mobility system makes trans-
porting a spare wheel superfluous,
thereby reducing the amount of weight
you have to carry around.
140 Repairing a flat tire
Please keep in mind that the fluids
bottle in the system's sealant con-
tainer has to be changed every 3 years
by your BMW center, if the unit has not
been used.<
Preparing the M Mobility system
for use
This is part of the M Mobility
system
The M Mobility system is located in the
luggage compartment under the floor
panel:
1 On/Off switch
2 Connection hose with manometer for
connecting the compressor with the
sealant container or to connect the
compressor to the wheel
1. Lift the floor panel
2. Loosen the M Mobility system from
its storage location.
3 Manometer for indicating the tire
pressure
Before you use the M Mobility sys-
tem, read the warnings and dan-
ger notices on the device carefully.<
4 Connector hose from the sealant
container to the wheel
5 Sticker with speed limit
If possible, leave the foreign object in
the tire.
6 Plug and cable for the cigarette
lighter socket
Pull off the sticker 5, refer to the second
column on the right, for the speed limit
and apply it to the steering wheel.
7 Protective gloves, not shown
Repairing a flat tire
141
Filling with sealant
2. Flip open the cover and pull out the
enclosed protective gloves. Take out
hose 2 with the manometer and
screw it to the terminal for the seal-
ant container as shown in the illustra-
tion
4. Make sure that the screw on the rear
of the pressure gauge 3 is tightened
down. Turn on the M Mobility sys-
tem, position I, refer to illustration,
and allow minutes to elapse, to let
the sealant flow in. It does not matter
afterward, what the tire's inflation
pressure is
1. Take off the round cover and take out
hose 4. Unscrew the valve dust cap
from the defective wheel and screw
the hose to the valve. Keep the dust
cap in a safe place
3. Make sure that the system has been
switched off, position 0.
Take out plug 6 and insert it into the 5. Turn the system off.
cigarette lighter socket in the pas-
senger compartment, refer to
page 103
Disconnect the connector hose from
the sealant container and the wheel
valve. Stow the M Mobility system in
the luggage compartment.
Distributing the sealant
Right afterward, drive at least
1 1/4 miles/2 km, so that the liquid
sealant distributes evenly throughout
the inside of the tire.
142 Repairing a flat tire
Do not exceed a maximum speed
Even if the tire fails to hold the
pressure, you should still carry out
Step 3 before proceeding to drive the
vehicle again, refer to Distributing the
sealant for more information. Then
repeat Steps 1 through 3.
of 40 mph / 60 km/h. If possible,
keep the vehicle speed above 10 mph /
20 km/h.
Stop in a suitable spot.<
The use of the M Mobility system may
be ineffective if the damaged area in
the tire is larger than approx. 3/16 in /
4 mm. Please consult the nearest BMW
center if the tire cannot be temporarily
repaired with the M Mobility system.<
Inflating tire to correct pressure
3. Unscrew the hose from the valve and
stow the M Mobility system in the
luggage compartment. Screw the
dust cap onto the valve again.
1. Take out the hose with the pressure
gauge and screw it onto the valve.
Take the plug out and plug it into the
cigarette lighter socket in the pas-
senger compartment
Do not exceed the maximum
speed limit described below, oth-
erwise it could lead to accidents.<
2. Reset the air pressure to
29 psi/200 kilopascal, and:
>Increase tire pressure: switch on
the M Mobility System, position I.
Switch off the unit briefly to check
the current tire pressure
When you start driving again, do not
exceed the permissible maximum
speed of 45 mph / 80 km/h.
>Decrease tire pressure: turn the
screw on the back of the manome-
ter, a valve located there will open
Repairing a flat tire
Battery
143
You will find corresponding
instructions for using the
Battery posts, terminals, and
related accessories contain lead
and lead compounds. Wash hands after Maintain the battery in an upright posi-
Return used batteries to a recy-
cling point or your BMW center.
M Mobility system on the device.
Replace the defective tire as soon as
possible and have the new wheel bal-
anced. Reinitialize the Flat Tire Monitor,
and refer to page 89 for further informa-
tion. Have the M Mobility system
refilled. Contact your BMW center for
this.<
handling.<
tion for transport and storage. Secure
the battery against tilting in transit.<
Maintenance
The battery is completely maintenance-
free. That means that the original bat-
tery acid will normally last for the ser-
vice life of the battery under moderate
climate conditions.
Protect valve stems against dirt using
screw-on dust caps. Dirty valve stems
frequently lead to slow pressure loss.
Please consult your BMW center
whenever you have any questions
concerning the battery. Since the bat-
tery is absolutely maintenance-free, the
following statements are for your infor-
mation only.<
Never disconnect the battery
when the engine is running; the
ensuing voltage surge would seriously
damage the vehicle's onboard elec-
tronic systems.<
Charging the battery
Charge the battery in the vehicle only
when the engine is not running. Use the
connections provided in the engine
compartment. For information on the
connections, see Jump-starting,
page 145.
