Following a temperature-related warning, the
target pressures are displayed on the control
display again after a short distance.
Sudden tire pressure loss
The system is not able to indicate sudden and
serious tire damage and the resulting loss of
tire pressure caused by external circumstan-
ces.
Failure performing a reset
When using tires with special approval, the
system will not function correctly if it has not
been reset. For example, a flat tire may be in-
dicated although the tire pressures are correct.
Malfunction
Message
The Tire Pressure Monitor displays a message
if the system is not operational.
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.
Measure
If the Tire Pressure Monitor system is not op-
erational, proceed as follows:
▷
If a wheel without air pressure sensor is
mounted, have the wheels checked as nec-
essary.
▷ Fault due to systems or devices with same
transmission frequency: The system reacti-
vates automatically upon leaving the inter-
ference zone.
▷ The system was unable to completely reset
when using tires with special approval. Per-
form a system reset again.
▷ If the Tire Pressure Monitor has failed:
Have the vehicle checked by an authorized
service center or another qualified service
center or repair shop.
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
Seite 333
Wheels and tires
MOBILITY
333
Online Edition for Part no. 01405A8A536 - VI/23
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