Volvo XC90 2020 Owner's Manual page 312

DRIVER SUPPORT
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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 to 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
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.
Trailer stability assist*
Trailer stability assist (TSA
towing a trailer in situations where they begin
snaking.
NOTE
Trailer Stability Assist is deactivated if
Sport Mode is activated.
Engine Drag Control
3
4 Trailer stability assist is included when the Volvo genuine towbar is installed.
5 Trailer Stability Assist
6 Electronic Stability Control
310
Roll Stability Control
This function reduces the risk of overturning,
for example during a sudden evasive manoeu-
vre or if the car skids. The system registers if
and how much the car's lateral inclination
changes. This information is used to calculate
the risk of the car overturning. If the car is at
risk, its electronic stability control system
engages, the engine torque is reduced and
one or more wheels are braked until the car
has regained its stability.
3 ) can prevent invol-
Under normal driving conditions, the sys-
tem improves the car's road safety, but this
must not be taken as a reason to increase
speed. Always follow the normal precau-
tions for safe driving.
Related information
4
Driving support systems (p. 308)
•
5
) stabilises a car
Activating or deactivating sport mode for
•
electronic stability control (p. 311)
Symbols and messages for electronic sta-
•
bility control (p. 312)
ESC Trailer stability assist* (p. 509)
•
WARNING
Electronic Stability Control in sport
mode
6
The stability system (ESC ) is always acti-
vated – it cannot be switched off. However,
the driver can select ESC Sport Mode
which allows for a more active driving experi-
ence.
With the ESC Sport Mode subfunction
selected, intervention from the system is
reduced and the car is allowed to skid more
and greater control than normal is thus trans-
ferred to the driver.
When ESC Sport Mode is selected, the func-
tion can be considered as deactivated, despite
the function continuing to help the driver in
many cases.
NOTE
With ESC Sport Mode selected, Trailer
Stability Assist (TSA 7 ) is deactivated.
ESC Sport Mode also provides more traction
even if the car has become bogged down or is
driving on a loose surface, such as in sand or
deep snow.
* Option/accessory.
,