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

06 Starting and driving

Stability and traction control system*

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
06
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.
*
150
Option/accessory, for more information, see Introduction.
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
1. Turn the thumbwheel (1) until the DSTC
menu appears.
DSTC ON means that the system function
is unchanged.
DSTC SPIN CONTROL OFF
system operation is reduced.
2. Press and hold RESET (2) until the
menu is changed.
The system remains reduced until the
driver reactivates it or until the engine is
switched off - after the engine is started the
next time DSTC is back in its normal mode
again.
WARNING
Suppressing system function may alter the
driving characteristics of the car.
NOTE
DSTC ON
is shown for several seconds on
the display each time the engine is started.
Messages on the display
TRACTION CONTROL TEMPORARILY OFF
means that the system has been temporarily
reduced due to excessive brake temperature.
±
The function is reactivated automatically
when the brakes have cooled.
DSTC SERVICE REQUIRED system disabled
due to a fault.
means that
DSTC