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 brak-
ing or acceleration when the system is in ac-
tion. The car may accelerate more slowly
than expected.
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 dur-
ing acceleration.
Traction control system
The function is active at low speed and trans-
fers power from the driving wheel that is
spinning to the one that is not.
Reduced operation
System operation during skidding and accel-
eration can be partially deactivated.
Operation during skidding is delayed and so
allows more skidding which provides greater
freedom for dynamic driving.
Traction in deep snow or sand is improved as
acceleration is no longer limited.
Operation
– Turn the thumbwheel (1) until the DSTC
menu appears.
DSTC ON means that the system function is
unchanged.
DSTC SPIN CONTROL OFF means that sys-
tem operation is reduced.
– Press and hold RESET (2) until the DSTC
menu is changed.
06 Starting and driving

Stability and traction control system

At the same time the symbol
as a reminder that the system has been re-
duced. 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 information display
TRACTION CONTROL TEMPORARILY OFF
means that the system has been temporarily
reduced due to excessive brake tempera-
ture. The function is reactivated automatical-
ly when the brakes have cooled.
DSTC SERVICE REQUIRED
system has been disabled due to a fault.
– Stop the car in a safe place and turn off
the engine.
If the message remains when the engine is
restarted, drive to an authorised Volvo work-
shop.
illuminates
06
means that the
125