Stability System - Volvo C70 Owner's Manual

Stability system

When the system is in action, it may seem as
if the car does not respond normally to accel-
eration. This is because the system detects
the amount of friction on the road surface and
allows the different stability system functions
to operate.
The car is equipped with the Dynamic
Stability and Traction Control system
(DSTC), which consists of the following
functions/parts:
• TC
• AYC
• SC
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.
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.
The AYC function is always active and cannot
be deactivated.
Spin Control – (SC)
The Spin Control function prevents the drive
wheels from slipping during acceleration.
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.
Deactivation is performed in the menu system
in the information display, where there are
two options:
• DSTC ON – the SC function is activated.
• DSTC SPIN CONTROL OFF – the SC
function is deactivated.
Starting and driving
Activating/deactivating Spin Control
function
– Turn thumbwheel (A) until the DSTC
menu is shown.
– Press RESET (B) until DSTC ON or
DSTC SPIN CONTROL OFF is shown.
WARNING!
The car's driving characteristics change if
Spin Control is deactivated.
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