Volvo 2018 S90

User Manual - Page 393

For 2018 S90.

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STARTING AND DRIVING
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391
How TSA works
Once swaying has begun, it can be very difficult
to stop, which makes it difficult to control the
vehicle and trailer.
The TSA system continuously monitors the vehi-
cle's movements, particularly lateral movement. If
the system detects a tendency to sway, the
brakes are applied individually on the front
wheels, which has a stabilizing effect on the vehi-
cle and trailer. This is often enough to enable the
driver to regain control of the vehicle.
If this is not adequate to stop the swaying motion,
the brakes are applied to all of the wheels on the
vehicle and on the trailer if it is equipped with
brakes, and engine power is temporarily reduced.
As the swaying motion begins to decrease and
the vehicle-trailer have once again become sta-
ble, TSA will now stop regulating the brakes/
engine power and the driver regains control of
the vehicle.
TSA is deactivated if the driver deactivates
ESC
in the center display's menu system.
When the ESC symbol in the
instrument panel flashes, TSA
is active.
Related information
Driving with a trailer (p. 388)
Electronic Stability Control (ESC) (p. 243)
Towing eyelet
When used, the towing eyelet should always be
securely attached in the openings on the right
side of the front and rear bumpers. There are
covers over these attachment points.
Using the towing eyelet
Take out the towing eyelet, which is stored
under the floor in the trunk.
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