Volvo V70 Owner's Manual page 157

2007 Volvo V70
Active Yaw Control (AYC) - DSTC only
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.
R-models only
The AYC function can be deactivated. This is done by pressing the DSTC button on the center control
panel (see the illustration on page 50) for approximately one second. This procedure must be repeated 5
times, after which "DSTC REDUCED FUNCTION" will be displayed in the text window. AYC will be
automatically reactivated the next time the ignition is switched on.
The indicator light in the DSTC button will be off.
WARNING!
The car's handling and stability characteristics will be altered if the STC or DSTC system functions
have been disabled.
STC/DSTC-related messages in the text window
"TRACTION CONTROL TEMPORARILY OFF" - The system has been temporarily switched off
due to high brake temperature and will automatically switch on again when the brakes have cooled.
"ANTI SKID SERVICE REQUIRED" - the system has been automatically disengaged due to a fault. An
authorized Volvo retailer should check the system.
Symbols in the instrument panel
The Stability Control indicator light
This light indicates different conditions, depending on how it illuminates.
The Stability Control indicator light illuminates for approximately 2 seconds
This indicates that the system is performing a self-diagnostic test when the ignition is switched on.
The Stability Control indicator light flashes
This indicates that the stability system is actively functioning to help counteract wheel spin and/or a skid.
The Stability Control indicator light glows steadily
"ANTI SKID SERVICE REQUIRED" will be displayed in the text window at the same time.
A fault is indicated in the stability system.
- Stop the vehicle in a safe place and switch off the engine.
- Restart the engine.
- If the indicator light goes out, the fault was temporary and no further action is required.
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