V50 w646.book - ESD - Volvo

06 Starting and driving
Stability and traction control system
General
The Dynamic Stability and Traction Control
system (STC/DSTC) improves the car’s traction
and helps the driver to avoid skidding.
A pulsing sound may be noticed during braking
or acceleration when the system is in action.
The car may accelerate more slowly
than expected.
The car is equipped with either STC or DSTC
depending on market. The table shows the
integral functions of the respective systems.
Function/system STC DSTC
Traction control system
The function is active at low speed and transfers
power from the driving wheel that is
spinning to the one that is not.
Reduced operation
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Active Yaw Control
Spin Control X X
Traction control system X X
Active Yaw Control
The function limits the driving and brake
force of the wheels individually in order to
stabilise the car.
Spin Control
The function prevents the driving wheels
from spinning against the road surface during
acceleration.
X
The stability system is activated automatically
each time the car is started.
System operation during skidding and acceleration
can be partially deactivated.
Operation during skidding is delayed and so
allows more skidding which provides greater
freedom for dynamic driving.
Traction in deep snow or sand is improved as
acceleration is no longer limited.
Operation
– Turn thumbwheel (A) until the STC/DSTC
menu is shown.
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