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The AdvanceTrac威 system automatically enables each time the engine is
started. All features of the AdvanceTrac威 system (TCS and ESC) are
active and monitor the vehicle from start-up. However, the system will
only intervene if the driving situation requires it.
The AdvanceTrac威 system includes
one of these traction control off
buttons located on the center of the
instrument panel
The stability control light and the
stability control off light in the
instrument cluster will illuminate
temporarily during start-up as part
of a normal system self-check. The stability control light may illuminate
(flash) during certain driving situations which cause the AdvanceTrac威
system to operate. If the stability control light illuminates steadily, have
the system serviced by an authorized dealer immediately. The message
center will also indicate a failure with the brake system.
Note: If the system cannot be turned off, refer to MyKey威 in the Locks
and Security chapter for more information.
When AdvanceTrac威 performs a normal system self-check, some drivers
may notice a slight movement of the brake, and/or a rumble, grunting, or
grinding noise after startup and when driving off.
When an event occurs that activates AdvanceTrac威 you may experience
the following:
• A slight deceleration of the vehicle
• The stability control light will flash.
• If your foot is on the brake pedal, a vibration in the pedal
• If the driving condition is severe and your foot is not on the brake, the
brake pedal may move as the systems applies higher brake forces. You
may also hear a whoosh of air from under the instrument panel during
this severe condition.
• The brake pedal may feel stiffer than usual.
Traction control system (TCS)
The traction control system is a driver aid feature that helps your vehicle
maintain traction of the wheels, typically when driving on slippery and/or
hilly road surfaces, by detecting and controlling wheel spin.
Excessive wheel spin is controlled in two ways, which may work
separately or in tandem, engine traction control and brake traction
Driving
228
2012 MKS (mks)
Owners Guide, 1st Printing
USA (fus)
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