Active Yaw Control (Ayc); Roll Stability Control (Rsc); The Dstc Button - Volvo XC90 2004 Owner's Manual

2004 VOLVO XC90
improve tractive force.
Under certain circumstances, such as when driving with snow chains, or driving in deep snow or loose
sand, it may be advisable to temporarily switch off this function for maximum tractive force. This is
done by pressing the DSTC button on the center control panel for at least a half a second.
When the SC function has been switched off:
The text window will briefly display "DSTC SPIN CONTROL OFF"
The LED in the DSTC button will be off.

3. Active Yaw Control (AYC)

This function helps maintain directional stability, for example when cornering, by braking one or more
of the wheels if the vehicle shows a tendency to skid or slide laterally. This is done by activating the
Anti-lock Braking System. A pulsating sound will be audible when the function is active, which is quite
normal. If you apply the brakes while this function is active, the brake pedal will feel stiffer than usual.
This is also one of the DSTC system's permanent functions and is not affected when the DSTC button on
the center control panel is pressed.

4. Roll Stability Control (RSC)

RSC utilizes a gyro-sensor to monitor the vehicle's angle of inclination, and the rate at which this angle
changes. If necessary, RSC activates the Anti-lock Brake System to brake one or more of the wheels to
help maintain stability. A pulsating sound will be audible when the function is active, which is quite
normal. If you apply the brakes while this function is active, the brake pedal will feel stiffer than usual.
This is one of the DSTC system's permanent functions and is not affected when the DSTC button on the
center control panel is pressed.

The DSTC button

The DSTC button in the center control panel is used to switch the Spin Control (SC) function on or off.
The button must be pressed for at least a half second to prevent SC from being switched off
inadvertently.
When the system has been switched off, the green indicator lamp in the button will go out and "DSTC
SPIN CONTROL OFF" will be displayed in the text window.
All DSTC functions are (re)activated each time the engine is started.
pg. 96 Starting and driving
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