Driving conditions that may activate Roll Stability Control include:
• Emergency lane-change
• Taking a turn too fast
• Quick maneuvering to avoid an accident, pedestrian or obstacle
The AdvanceTrac威/Roll Stability Control system automatically turns on
when the engine is started. However, the system does not function when
the vehicle is traveling in R (Reverse). In R (Reverse), ABS and the
traction enhancement feature will continue to function.
The AdvanceTrac威/Roll Stability
Control button allows the driver to
control the availability of the
AdvanceTrac威/Roll Stability Control
system. AdvanceTrac威/Roll Stability
Control system status is indicated by a warning indicator light with a
“sliding car” icon in the instrument cluster that will flash when the
system is active and an indicator light in the control button that will
illuminate when the system is turned off. In vehicles with a message
center, the message “ADVTRAC OFF” will be displayed.
If a failure is detected in the AdvanceTrac威/Roll Stability Control system,
the warning indicator light in the instrument cluster will stay on. If the
warning indicator light in the instrument cluster remains on while the
engine is running, have the system serviced immediately.
Pressing the control once will disable the AdvanceTrac威 stability
enhancement/Roll Stability Control and the engine power reduction
portion of the traction enhancement feature; the brake portion of the
traction enhancement feature will still function normally. Pressing and
holding the control for more than five seconds will disable the
AdvanceTrac威 stability enhancement/Roll Stability Control and traction
enhancement feature. If the vehicle is stuck in snow or mud or when
driving in deep sand, switching off the AdvanceTrac威 system may be
beneficial so the wheels are allowed to spin. If your vehicle seems to lose
engine power while driving in deep sand or very deep snow, switching off
the AdvanceTrac威 stability enhancement feature will restore full engine
power and will enhance momentum through the obstacle.
Some drivers may notice a slight movement of the brake pedal when the
AdvanceTrac威 performs a system self-check. During AdvanceTrac威/Roll
Stabilty Control operation you may experience the following:
• A rumble or grinding noise
• A slight deceleration of the vehicle
• The AdvanceTrac威 indicator light will flash
2005 Aviator f/k/a Navigator LS (231)
Owners Guide (post-2002-fmt)
USA_English (fus)
Driving
272
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