2002-2014 Volvo XC90 SUV Starting and driving -> Stability system User Manual
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Starting and driving -> Stability system for Your Volvo XC90 SUV First Generation (2002-2014)

Starting and driving  
Stability system  
When the stability system is in action, it may  
seem like the car does not respond normally  
to acceleration. This is because the system  
detects the amount of friction on the road  
surface and allows the different stability  
system functions to operate.  
Spin Control (SC)  
The Stability Control function prevents the  
drive wheels from slipping during acceler-  
ation. This improves road safety on slippery  
surfaces. Under certain conditions, such as  
when driving with snow chains or in deep  
snow or sand, it may be beneficial to  
deactivate the SC function to increase  
traction. This is done with the STC/DSTC  
button.  
The car is either equipped with STC (Stability  
and Traction Control) - Stability and traction  
control system or DSTC (Dynamic Stability  
and Traction Control) - Dynamic stability and  
traction control system.  
Active Yaw Control (AYC)  
The Active Yaw Control function automati-  
cally brakes one or more wheels to stabilise  
the car in the event of a skid. If the brake  
pedal were to be depressed in this situation,  
it would feel more rigid than usual and a  
pulsing sound would be heard.  
Function/  
system  
1
STC  
DSTC  
TC  
SC  
AYC  
X
X
X
X
X
1. Option on certain markets.  
The AYC function is always active and cannot  
be deactivated.  
Traction Control (TC)  
The Traction Control function transfers  
power from the spinning drive wheel to the  
drive wheel which has grip by braking the  
spinning drive wheel. To increase forward  
traction in this situation, it may be necessary  
to depress the accelerator more than usual. A  
pulsing sound is heard when Traction Control  
is working. This is completely normal. The TC  
function is most active at low speeds. It  
cannot be deactivated.  
WARNING!  
Suppressing the STC or DSTC system  
may alter the driving characteristics of the  
car. Always take care when cornering and  
driving in slippery conditions.  
NNQ  

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