Tyre Pressure Monitor; Operation - Cadillac XT4 Owner's Manual

276 VEHICLE CARE
the proper pressure. Driving on a
significantly under-inflated tyre
causes the tyre to overheat and can
lead to tyre failure. Under-inflation
also reduces fuel efficiency and tyre
tread life, and may affect the vehicle's
handling and stopping ability.
Please note that the TPMS is not a
substitute for proper tyre
maintenance, and it is the driver's
responsibility to maintain correct tyre
pressure, even if under-inflation has
not reached the level to trigger
illumination of the TPMS low tyre
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 tyre pressure telltale.
When the system detects a
malfunction, 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 malfunction indicator is
illuminated, the system may not be
able to detect or signal low tyre
pressure as intended. TPMS
malfunctions may occur for a variety
of reasons, including the installation
of replacement or alternate tyres or
wheels on the vehicle that prevent the
TPMS from functioning properly.
Always check the TPMS malfunction
telltale after replacing one or more
tyres or wheels on your vehicle to
ensure that the replacement or
alternate tyres and wheels allow the
TPMS to continue to function
properly.
See Tyre Pressure Monitor Operation
0 276 for additional information.
See Declaration of Conformity 0 329.

Tyre Pressure Monitor

Operation

This vehicle may have a Tyre Pressure
Monitor System (TPMS). The TPMS is
designed to warn the driver when a
low tyre pressure condition exists.
TPMS sensors are mounted onto each
tyre and wheel assembly, excluding
the spare tyre and wheel assembly.
The TPMS sensors monitor the air
pressure in the tyres and transmit the
tyre pressure readings to a receiver
located in the vehicle.
When a low tyre pressure condition is
detected, the TPMS illuminates the
low tyre pressure warning light on the
instrument cluster. If the warning
light comes on, stop as soon as
possible and inflate the tyres to the
recommended pressure shown on the
Tyre and Loading Information label.
See Vehicle Load Limits 0 160.
A message to check the pressure in a
specific tyre displays in the Driver
Information Centre (DIC). The low tyre
pressure warning light and the DIC
warning message come on at each
ignition cycle until the tyres are
inflated to the correct inflation
pressure. Using the DIC, tyre pressure