Volvo 2009 XC90 Owner's Manual download pdf (Page 142)

06 Starting and driving

Stability and traction control system*

06

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* Option/accessory, for more information, see Introduction.

141

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

G028511

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 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.

At the same time the symbol illuminates as

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 SERVICE REQUIRED system disabled

due to a fault.

±

Stop the car in a safe place and turn off the

engine.

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