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Run Flat Indicator
While the vehicle is being driven, the Run
Flat Indicator monitors the set tire inflation
pressures by evaluating each wheel's rota-
tional speed. This allows the system to de-
tect a significant loss of pressure in a tire.
If a wheel's rotational speed changes due
to falling tire inflation pressure, you will
see a corresponding warning message in
the multifunction display.
The Run Flat Indicator may function in a
restricted manner or with a delay if:
snow chains are mounted to the
vehicle
winter road conditions prevail
you are driving on a loose surface (e.g.
sand or gravel)
you are driving in a very sporty manner
(involving rapid acceleration or high
speeds in curves)
Warning!
When the multifunction display shows the
message Check tires Then reactivate
Run Flat Indicator one or more of your
tires is significantly under-inflated. You
should stop and check your tires as soon as
possible, and inflate them to the proper tire
inflation pressure as indicated on the vehi-
cle's tire information placard. 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 vehi-
cle's handling and stopping ability. Each tire,
including the spare, should be checked
monthly when cold and set to the recom-
mended tire inflation pressure as specified
in the vehicle placard and owner's manual.
i
G
The recommended tire inflation pres-
sures for your vehicle can be found on
the tire placard located on the driver's
door B-pillar ( page 291). The tire in-
flation pressures are not listed in the
owner's manual.
Operation
Tires and wheels
301
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