4.18
Controls
Tire Pressure Monitoring
Warning: 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.
Each tire should be checked monthly when cold, in the ambient air
temperature that the vehicle is normally driven. Setting tire pressures
in a warm garage and then driving in a very low ambient may result
in a low tire pressure warning. Set the correct pressure recommended
by the vehicle manufacturer on the vehicle placard or tire inflation
pressure label (if your vehicle has tires of a different size than the size
shown on the vehicle placard or tire inflation pressure label, you
should make sure of the correct tire pressure for those tires).
As an added safety feature, your vehicle has been equipped with a
Tire Pressure Monitoring System (TPMS) that sets a tire pressure
telltale (warning) symbol to ON (A) when one or more of the tires is
significantly under or over inflated. At the same time an image of
vehicle in the message centre will show which tire(s) have low or high
air pressure and the current tire pressure. When the tire pressure
telltale comes ON, stop and check your tires as soon as possible, and
inflate or deflate them to the correct pressure.
The TPMS is not a substitute for correct tire maintenance, and it
is the driver's responsibility to maintain correct tire pressures, even if
under-inflation has not reached the level to set the TPMS tire pressure
telltale symbol to ON.
Malfunction Telltale
Your vehicle has also been
equipped with a TPMS
malfunction telltale to show
when the system is not operating
correctly. The TPMS malfunction
telltale is combined with the tire
pressure telltale.
When the system detects a
malfunction, the telltale will flash
for approximately one minute
and then stay ON. This sequence
will continue upon subsequent
vehicle start-ups as long as the malfunction exists.
When the malfunction telltale is ON, the system may not be able to
detect or send tire pressure as intended. TPMS malfunctions can
occur for a variety of reasons, including the installation of
replacement or alternate tires or wheels on the vehicle that prevent
the TPMS from operating correctly.
Always check the TPMS malfunction telltale after replacing one or
more tires or wheels on your vehicle to make sure that the
replacement or alternate tires and wheels allow the TPMS to
continue to function correctly.
Operation
When a tire pressure warning is detected reduce the vehicle
speed to an appropriate safe level and stop at the first safe and
convenient place to inspect the tire(s).
At each ignition ON there is a short delay before tire pressures are
received, from the wheel and tire transmitters, and shown in the
message centre.
If the tire telltale symbol comes ON while driving, reduce speed to
30 mph and stop in safe place as soon as possible. Check the status
of the tire(s) in the message centre:
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