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EnglishWheels and tires -> Flat tire monitor for your BMW i4 2021-2025
Wheels and tires
MOBILITY
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
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.
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After a tire or wheel change, an initialization
was carried out at the correct tire pressure.
After the tire pressure was adjusted to a
new value, an initialization was performed.
Status display
The current status of the flat tire monitor can
be displayed, e.g., whether the flat tire monitor
is active.
1.
Apps menu
2. "Vehicle"
3. "Vehicle status"
4. "FLAT TIRE MONITOR"
The status is displayed.
Initialization required
An initialization must be performed in the fol-
lowing situations:
Flat tire monitor
▷
After the tire inflation pressure has been
adjusted.
Principle
The flat tire monitor detects a tire pressure
loss while driving and issues a warning if the
tire pressure has dropped.
▷
After a tire or wheel change.
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.
General information
The system detects tire pressure loss on the
basis of rotation speed differences between
the individual wheels while driving.
Do not initialize the system when driving with
snow chains.
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.
1.
Apps menu
2. "Vehicle"
The system does not measure the actual infla-
tion pressure in the tires.
3. "Vehicle status"
4. "FLAT TIRE MONITOR"
5. Turn on drive-ready state and do not drive
off.
Functional requirements
The following prerequisites must be met for
the system; otherwise, reliable notification of a
tire pressure loss is not assured:
6. "Perform reset"
7. Drive off.
The initialization is completed while driving,
which can be interrupted at any time.
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Wheels and tires
MOBILITY
The initialization automatically continues when
driving continues.
Runflat tires, refer to page 311.
3. Read the description on what to do in case
of a flat tire.
Messages
Actions in the event of a flat tire
General information
When a flat tire is indicated, the Dynamic Sta-
bility Control (DSC) is turned on, if needed.
Standard tires
1. Identify the damaged tire.
To do this, check the tire pressure in all four
tires, for instance using the tire pressure
display of a flat tire kit.
Safety information
Warning
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.
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, injury, and property damage. Do
not continue driving if the vehicle is equipped
with normal tires. Follow the information on
runflat tires and continued driving with these
tires.
If tire damage cannot be identified, contact
an authorized service center or another
qualified service center or repair shop.
2. Repair the flat tire, e.g., with a flat tire kit or
by changing the wheel.
Runflat tires
Indication of a flat tire
Safety information
A yellow warning light is illuminated in
the instrument cluster.
Warning
In addition, an icon with a Check Control mes-
sage appears on the control display.
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, and property dam-
age. Drive moderately and do not exceed a
speed of 50 mph/80 km/h.
Icon
Possible cause
There is a flat tire or a major tire
pressure loss.
Measure
1. Reduce your speed and stop cautiously.
Avoid sudden braking and steering maneu-
vers.
Warning
Vibrations or loud noises while driving can
indicate the final failure of a tire. Tire compo-
nents may come loose. There is a risk of ac-
cident, injury, and property damage. Reduce
your speed and stop. Do not continue driving.
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.
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Wheels and tires
MOBILITY
Contact an authorized service center or an-
other qualified service center or repair shop.
Modify your driving style. Avoid abrupt steering
or driving over obstacles, for instance curbs or
potholes.
Maximum speed
System limits
The system may be delayed or malfunction in
the following situations:
You may continue driving with a damaged tire
at speeds up to 50 mph/80 km/h.
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A natural, even tire pressure loss in all
four tires will not be recognized. Therefore,
check the tire inflation pressure regularly.
Continued driving with a flat tire
Follow the following when continuing to drive
with a damaged tire:
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Sudden and serious tire damage caused
by external circumstances cannot be recog-
nized in advance.
1. Avoid sudden braking and steering maneu-
vers.
2. Do not exceed a speed of
50 mph/80 km/h.
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The system has not been initialized.
When driving on a snowy or slippery road.
3. Check the tire inflation pressure in all four
tires at the next opportunity.
Sporty driving style: slip on traction wheels,
high lateral acceleration (drifting).
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.
▷
When driving with snow chains.
Changing wheels/tires
Possible driving distance with a flat tire
General information
The possible driving distance which may be
safely traveled varies depending 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.
When using run-flat tires or a tire repair set,
wheels do not always need to be changed im-
mediately if the vehicle has broken down be-
cause the flat tire has caused a tire pressure
loss.
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.
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.
Safety information
Vehicle handling with damaged tires
Vehicles driven with a damaged tire will han-
dle differently, potentially leading to conditions
such as the following:
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
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Greater likelihood of skidding of the vehicle.
Longer braking distances.
Changed self-steering properties.
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