Dstc - Stability And Traction Control System - Volvo S60 Owner's Manual

04 Comfort and driving pleasure
DSTC – Stability and traction control system
General information on DSTC
The stability and traction control system, DSTC
(Dynamic Stability & Traction Control) helps the
driver to avoid skidding and improves the car's
traction.
The activation of the system during braking
may be noticed as a throbbing sound. The car
may accelerate slower than expected when the
accelerator pedal is depressed.
Active Yaw Control
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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 accel-
eration.
Traction control system
The function is active at low speed and trans-
fers power from the driving wheel that is spin-
ning to the one that is not.
Engine drag control - EDC
EDC (Engine Drag Control) prevents involun-
tary wheel locking, e.g. after shifting down or
engine braking when driving in low gears on
slippery road surfaces.
*
166
Option/accessory, for more information, see Introduction.
Involuntary wheel locking while driving can,
amongst other things, impair the driver's ability
to steer the car.
Corner Traction Control – CTC
CTC compensates for understeer and allows
higher than normal acceleration in a bend with-
out wheelspin on the inner wheel, e.g. on an
arcing motorway entrance road to quickly
reach the prevailing traffic speed.
Trailer Stability Assist* - TSA
The function serves to stabilise the car and
trailer combination if it begins to snake, see
page 284.
NOTE
The function is deactivated if the driver
selects Sport mode.
Operation
Selection of level - Sport mode
The DSTC system is always activated - it can-
not be deactivated.
However, the driver can select the Sport mode,
which allows for a more active driving experi-
ence. In Sport mode the system detects
whether the accelerator pedal, steering wheel
movements and cornering are more active than
in normal driving and then allows controlled
skidding with the rear section up to a certain
level before it intervenes and stabilises the car.
If the driver stops a controlled skid by releasing
the accelerator pedal then the DSTC system
intervenes and stabilises the car.
With Sport mode, maximum traction is
obtained if the car has become stuck, or when
driving on a loose surface - e.g. sand or deep
snow.
Proceed as follows to select Sport mode:
1. Press the centre console button MY CAR
and search in the display screen's menu
system and locate My S60
information on the menu system, see
page 142).
2. Uncheck the box and back out of the menu
system with EXIT.
> The system then allows a more sporty
driving style.
The Sport mode is active until the driver dese-
lects it or until the engine is switched off - after
the engine is started the next time the DSTC
system is back in its normal mode again.
DSTC. (For