Stability And Traction Control System - Volvo XC90 Owner's Manual

General
The Dynamic Stability and Traction Control
system (DSTC) improves the car's traction and
helps the driver to avoid skidding.
A pulsing sound may be noticed during braking
or acceleration when the system is in action.
The car may accelerate slower than expected
when the accelerator pedal is depressed.
Active Yaw Control
The function limits the driving and brake force
of the wheels individually in order to stabilise
the car.
Spin Control
The function prevents the driving wheels from
spinning against the road surface during accel-
eration.
Traction control system
The function is active at low speed and trans-
fers power from the driving wheel that is spin-
ning to the one that is not.
Reduced operation
Thumbwheel
RESET button
System operation during skidding and accel-
eration can be partially deactivated.
Operation during skidding is then delayed and
so allows more skidding which provides
greater freedom for dynamic driving. Traction
in deep snow or sand is improved at the same
time as acceleration is no longer limited.
Operation
Turn the thumbwheel (1) until the
menu appears.
DSTC ON means that the system function is
unchanged.
06 Starting and driving

Stability and traction control system*

DSTC SPIN CONTROL OFF
tem operation is reduced.
Press and hold RESET (2) until the
menu is changed.
At the same time the symbol
a reminder that the system has been reduced.
The system remains reduced until the engine is
next started.
WARNING
Suppressing system function may alter the
driving characteristics of the car.
NOTE
DSTC ON is shown for several seconds in
the display each time the engine is started.
Messages in the display
TRACTION CONTROL TEMPORARILY
OFF means that the system has been tempo-
rarily reduced due to excessive brake tempera-
ture. The function is reactivated automatically
when the brakes have cooled.
DSTC
DSTC SERVICE REQUIRED
due to a fault.
Stop the car in a safe place and turn off the
engine.
*
Option/accessory, for more information, see Introduction.
means that sys-
DSTC
illuminates as
06
system disabled
143