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DRIVER SUPPORT
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* Option/accessory.
183
•
Engine drag control - EDC
•
Corner Traction Control - CTC
•
Trailer Stability Assist - TSA
Active Yaw Control
The function checks 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 acceler-
ation.
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.
Engine drag control - EDC
EDC (Engine Drag Control) prevents involuntary
wheel locking, e.g. after shifting down or engine
braking when driving in low gears on slippery
road surfaces.
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 without
wheelspin on the inner wheel, e.g. on an arcing
motorway entrance road to quickly reach the pre-
vailing traffic speed.
Trailer Stability Assist* - TSA
1
Trailer stability assist (p. 317) function is to sta-
bilise the car and trailer combination if it begins
to snake. For more information, see Driving with a
trailer* (p. 311).
NOTE
The function is deactivated if the driver
selects Sport mode.
Related information
•
Electronic stability control (ESC) - operation
(p. 183)
•
Electronic stability control (ESC) - symbols
and messages (p. 185)
Electronic stability control (ESC) -
operation
Selection of level - Sport mode
The ESC system is always activated - it cannot be
deactivated.
However, the driver can select
the Sport mode, which allows
for a more active driving experi-
ence.
Sport mode is selected in the
menu system MY CAR. For a
description of the menu system, see MY CAR
(p. 109).
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, for example, the driver stops a controlled skid
by releasing the accelerator pedal, then the ESC
system intervenes and stabilises the car.
With Sport mode, maximum traction is also
obtained if the car has become stuck, or when
driving on a loose surface - e.g. sand or deep
snow.
1
Trailer Stability Assist is included in the installation of Volvo genuine towbar.
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