Volvo S90 2019 Owner's Manual page 292

DRIVER SUPPORT
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WARNING
The function is supplementary driver
•
support intended to facilitate driving
and make it safer – it cannot handle all
situations in all traffic, weather and
road conditions.
The driver is advised to read all sec-
•
tions in the Owner's Manual that relate
to this function to learn about factors
such as its limitations and what the
driver should be aware of before using
the system.
Driver support functions are not a sub-
•
stitute for the driver's attention and
judgement. The driver is always
responsible for ensuring the car is
driven in a safe manner, at the appro-
priate speed, with an appropriate dis-
tance to other vehicles, and in accord-
ance with current traffic rules and reg-
ulations.
3
Stability function
The function checks the driving and brake
force of the wheels individually in order to sta-
bilise the car.
Also known as Active Yaw Control.
3
4 Engine Drag Control
5 Trailer stability assist is included when the Volvo genuine towbar is installed.
6 Trailer Stability Assist
290
Spin control and traction control
system
The function is active at low speed and brakes
the drive wheels that spin so that additional
traction shall be transferred from the drive
wheels that are not spinning.
The function can also prevent the driving
wheels from spinning against the road surface
during acceleration.
Engine Drag Control
Engine Drag Control (EDC 4 ) can prevent invol-
untary wheel locking, e.g. after shifting down
or engine braking when driving in low gear on
slippery road surfaces.
Involuntary wheel locking while driving can,
amongst other things, impair the driver's abil-
ity to steer the car.
5
Trailer stability assist*
6
Trailer stability assist (TSA ) stabilises a car
towing a trailer in situations where they begin
snaking.
NOTE
Trailer Stability Assist is deactivated if
Sport Mode is activated.
Related information
Driving support systems (p. 288)
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Activating or deactivating sport mode for
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electronic stability control (p. 291)
Symbols and messages for electronic sta-
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bility control (p. 293)
Trailer stability assist* (p. 481)
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ESC
* Option/accessory.