Sudden tire pressure loss
The system cannot indicate sudden serious
tire damage caused by external circumstan-
ces.
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 correct.
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 pres-
sure losses.
Examples and recommendations in the fol-
lowing situations:
– Wheel without TPM wheel electronics,
e.g., an emergency wheel, is mounted:
Have it checked by an authorized serv-
ice center or another qualified service
center or repair shop as needed.
– Malfunction: have the vehicle checked
by an authorized service center or an-
other qualified service center or repair
shop.
– The system was unable to complete the
reset. Perform a system reset again.
– Fault caused by systems or devices with
the same radio frequency: after leaving
the area of the interference, the system
automatically 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 recom-
mended by the vehicle manufacturer on the
vehicle placard or tire inflation pressure la-
bel. (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 vehicle 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 signif-
icantly under-inflated. Accordingly, 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 over-
heat and can lead to tire failure. Under-in-
flation also reduces fuel efficiency and tire
tread life, and may affect the vehicle's han-
dling and stopping ability. Please note that
the TPMS is not a substitute for proper tire
maintenance, and it is the driver's responsi-
bility 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 malfunction indica-
tor to indicate when the system is not oper-
ating properly. The TPMS malfunction indi-
cator is combined with the low tire pressure
telltale. When the system detects a malfunc-
tion, the telltale will flash for approximately
one minute and then remain continuously
illuminated. This sequence will continue
upon subsequent vehicle start-ups as long
as the malfunction exists. When the mal-
function indicator 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, includ-
ing the installation of replacement or alter-
nate tires or wheels on the vehicle that pre-
vent the TPMS from functioning properly.
Always check the TPMS malfunction telltale
after replacing one or more tires or wheels
on the vehicle to ensure that the replace-
Seite 159
Safety CONTROLS
159
Online Edition for Part no. 01405A7DAD4 - II/23
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