Volvo 2008 S40 Owner's Manual page 138

Spin control (SC)
The spin control function is designed to help prevent the drive wheels from spinning while the vehicle is accelerating.
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
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Models equipped with All Wheel Drive (AWD) have an integrated traction control function that cannot be disabled. DSTC is optional on AWD
models.
Temporarily switching off Spin control
1. Turn the thumbwheel (A) on the left-side steering wheel lever until the STC/DSTC menu is displayed.
2. Hold down the RESET button (B) to toggle between
NOTE
The message STC/DSTC SPIN CONTROL OFF
temporarily been switched off.
The stability control indicator light
The spin control function is automatically enabled each time the engine is started.
STC/DSTC ON indicates that all system functions are active.
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.
150
06 Starting and driving
Stability system
This is one of the stability system's permanent functions and cannot be switched off.
WARNING
The car's handling and stability characteristics will be altered if the STC/DSTC system functions have been disabled.
STC/DSTC-related messages in the text window
"TRACTION CONTROL TEMPORARILY
temperature and will automatically switch on again when the brakes have cooled.
"ANTI SKID SERVICE
qualified Volvo service technician 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
will illuminate and remain on until spin control has been reactivated.
OFF" - The system has been temporarily switched off due to high brake
REQUIRED" - the system has been automatically disengaged due to a fault. A trained and
STC/DSTC SPIN CONTROL ON
indicates that the stability system's spin control function has
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.
or OFF.