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EnglishSafety -> Tire Pressure Monitor TPM for your BMW i8 2014-2020
Safety
CONTROLS
▷ Do not place objects under the seat that
could press against the seat from below.
Strength of the driver's and front-seat
passenger airbag
The explosive power that activates driver's/front-
seat passenger airbags very much depends on
the positions of the driver's/front passenger seat.
▷ No moisture in or on the seat.
Indicator light for the front-seat
passenger airbags
To maintain the accuracy of this function over
the long term, calibrate the front seats as soon as
a respective message appears on the Control
Display.
Calibrating the front seats
Warning
There is a risk of jamming when moving the
seats. There is a risk of injury or risk of damage
to property. Make sure that the area of move‐
ment of the seat is clear prior to any adjust‐
ment.
The indicator light for the front-seat passenger
airbags indicates the operating state of the front-
seat passenger airbags.
The light indicates whether the airbags are either
activated or deactivated.
A corresponding message appears on the Con‐
trol Display.
▷ The indicator light lights up
when a child is properly
seated in a child restraint sys‐
tem or when the seat is
empty. The airbags on the
front passenger side are not
activated.
1. Press the switch and move the respective
seat all the way forward, until it stops.
2. Press the switch forward again. The seat still
moves forward slightly.
3. Readjust the seat to the desired position.
The calibration procedure is completed when the
message on the Control Display disappears.
▷ The indicator light does not light up when, for
instance a correctly seated person of suffi‐
cient size is detected on the seat. The air‐
bags on the front passenger side are acti‐
vated.
If the message continues to be displayed, repeat
the calibration.
If the message does not disappear after a repeat
calibration, have the system checked as soon as
possible.
Detected child restraint systems
The system generally detects children seated in
a child restraint system, particularly in child re‐
straint systems required by NHTSA at the point
in time when the vehicle was manufactured. Af‐
ter installing a child restraint system, make sure
that the indicator light for the front-seat passen‐
ger airbags lights up. This indicates that the child
restraint system has been detected and the
front-seat passenger airbags are not activated.
Tire Pressure Monitor TPM
Concept
The system monitors tire inflation pressure in the
four mounted tires. The system warns you if
there is a significant loss of pressure in one or
more tires.
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Safety
CONTROLS
All wheels green
General information
System is active and will issue a warning related
to the tire inflation pressures stored during the
last reset.
Sensors in the tire valves measure the tire infla‐
tion pressure and, depending on the model, the
tire temperature.
Further information and instructions on using the
system can also be found under Tire inflation
pressure, refer to page 206.
One to four yellow wheels
A flat tire or major drop in the tire inflation pres‐
sure has occurred in the indicated tires.
Functional requirements
The following conditions must be met for the
system; otherwise, reliable flagging of a loss of
tire inflation pressure is not assured:
Gray wheels
It may not be possible to identify tire pressure
losses.
Possible causes:
▷ After a tire or wheel replacement, a reset was
performed with the correct tire inflation pres‐
sure.
▷ Malfunction.
▷ The system is being reset.
▷ After the tire inflation pressure was adjusted
to a new value, a reset was performed.
Additional information
▷ Wheels with TPM wheel electronics.
The status control display additionally shows the
current tire inflation pressures and, depending on
the model, tire temperatures. The values shown
are instantaneous measurements and may vary
depending on driving style or weather conditions.
Status display
Current status
The system status can be displayed on the Con‐
trol Display, e.g., whether or not the system is ac‐
tive.
Resetting the system
Via iDrive:
Via iDrive:
1. "My Vehicle"
1. "My Vehicle"
2. "Vehicle status"
2. "Vehicle status"
3.
"Tire Pressure Monitor"
3.
"Tire Pressure Monitor"
4. Switch on drive-ready state and do not drive
off.
The current status is displayed.
5. Reset tire inflation pressure: "Perform reset".
6. Drive away.
Tire conditions
The wheels are displayed in gray and the follow‐
ing is displayed "Resetting Tire Pressure
Monitor…".
General information
Tire and system status are indicated by the color
of the wheels and a SMS text message on the
Control Display.
After a travel time of several minutes, the set tire
inflation pressures are accepted as reference val‐
ues. The reset is completed automatically while
driving.
After a successfully completed reset, the wheels
on the Control Display are shown in green and
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Safety
CONTROLS
"Tire Pressure Monitor active. See label for
recommended pressures." is displayed.
If the tire inflation pressure is low
Message
You may interrupt this trip at any time. When you
continue the reset resumes automatically.
A yellow warning light is illuminated in
the instrument cluster.
Messages
In addition, a symbol with a Check Control mes‐
sage appears on the Control Display.
General information
A low tire inflation pressure may cause the DSC
Dynamic Stability Control to be switched on.
Symbol Possible cause
There is a flat tire or a major loss in
tire inflation pressure.
Safety information
No reset was performed for the sys‐
tem. The system therefore issues a
warning based on the tire inflation
pressures before the last reset.
Warning
A damaged regular tire with low or missing tire
inflation pressure impacts handling, such as
steering and braking response. There is a risk
of accident. Do not continue driving. Repair the
flat tire or replace the wheel.
Measure
Reduce your speed and stop cautiously. Avoid
sudden braking and steering maneuvers. Do not
keep driving and contact a dealer’s service cen‐
ter or another qualified service center or repair
shop.
If a tire inflation pressure check is
required
If no tire repair kit is available, contact a dealer’s
service center or another qualified service center
or repair shop.
Message
A symbol with a Check Control message ap‐
pears on the Control Display.
System limits
Temperature
The tire inflation pressure depends on the tire's
temperature.
Symbol Possible cause
The system has detected a wheel
change, but no reset was done.
Inflation was not carried out according
to specifications.
Driving or exposure to the sun will increase the
tire's temperature, thus increasing the tire infla‐
tion pressure.
The tire inflation pressure has fallen
below the level of the last confirma‐
tion.
The tire inflation pressure is reduced when the
tire temperature falls again.
Measure
These circumstances may cause a warning
when temperatures fall very sharply.
1. Check the tire pressure and correct as
needed.
Sudden tire pressure loss
The system cannot indicate sudden serious tire
damage caused by external circumstances.
2. Carry out a reset of the system after a tire
change.
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Safety
CONTROLS
nates, 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 effi‐
ciency and tire tread life, and may affect the vehi‐
cle'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 illu‐
mination of the TPMS low tire pressure telltale.
Your vehicle has also been equipped with a
TPMS malfunction indicator to indicate when the
system is not operating properly. The TPMS
malfunction indicator is combined with the low
tire pressure telltale. When the system detects a
malfunction, the telltale will flash for approxi‐
mately one minute and then remain continuously
illuminated. This sequence will continue upon
subsequent vehicle start-ups as long as the mal‐
function exists. When the malfunction indicator is
illuminated, the system may not be able to de‐
tect 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 functioning properly. Al‐
ways check the TPMS malfunction telltale after
replacing one or more tires or wheels on your ve‐
hicle to ensure that the replacement or alternate
tires and wheels allow the TPMS to continue to
function properly.
Failure performing a reset
The system does not function properly if a reset
has not been carried out, for instance a flat tire is
reported though tire inflation pressures are cor‐
rect.
Malfunction
The yellow warning light flashes and is
then illuminated continuously. A Check
Control message is displayed. It may not
be possible to identify tire pressure losses.
Examples and recommendations in the following
situations:
▷ A wheel without TPM wheel electronics is
mounted: have it checked by a dealer’s serv‐
ice center or another qualified service center
or repair shop as needed.
▷ Malfunction: have system checked by a deal‐
er’s service center or another qualified serv‐
ice center or repair shop.
▷ The system was unable to complete the re‐
set. Perform a system reset again.
▷ Interference caused by systems or devices
with the same radio frequency: after leaving
the area of the interference, the system auto‐
matically becomes active again.
Declaration according to NHTSA/FMVSS
138 Tire Pressure Monitoring System
Each tire, including the spare (if provided) should
be checked monthly when cold and inflated to
the inflation pressure recommended by the vehi‐
cle manufacturer on the vehicle placard or tire in‐
flation pressure label. (If your vehicle has tires of
a different size than the size indicated on the ve‐
hicle placard or tire inflation pressure label, you
should determine the proper tire inflation pres‐
sure for those tires.) As an added safety feature,
your vehicle has been equipped with a tire pres‐
sure monitoring system (TPMS) that illuminates
a low tire pressure telltale when one or more of
your tires is significantly under-inflated. Accord‐
ingly, when the low tire pressure telltale illumi‐
Intelligent Safety
Concept
Intelligent Safety enables central operation of the
driver assistance systems.
The intelligent safety systems can help prevent
an imminent collision.
▷ Approach control warning with City light brak‐
ing function, refer to page 141.
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