2005 Volvo S80
wheel spin. This is quite normal.
This is one of the STC/DSTC's permanent functions and is not affected when the button on the center
control panel is pressed.
2. Spin control (SC)
The spin control function is designed to help prevent the drive wheels from spinning while the car is
accelerating. This is done by temporarily reducing engine torque to the drive wheels, which helps
improve stability and 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 STC/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 "SPIN CONTROL OFF"
●
The LED in the STC/DSTC button will be off.
The following two functions are only available with DSTC:
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 car 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. Emergency Brake Assistance (EBA)
The EBA function is an integrated part of the DSTC system. EBA is designed to provide full brake
effect immediately in the event of sudden, hard braking. The system is activated by the speed with which
you depress the brake pedal.
When the EBA system is activated, the brake pedal will go down and pressure in the brake system
immediately increases to the maximum level. Maintain full pressure on the brake pedal in order to utilize
the system completely. EBA is automatically deactivated when the brake pedal is released.
When the car has been parked for some time, the brake pedal may sink more than usual when the engine
is started. This is normal and the pedal will return to its usual position when it is released.
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