Volvo V90 CROSS COUNTRY Owner's Manual page 436

STARTING AND DRIVING
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are applied individually on the front wheels,
which has a stabilizing effect on the vehicle
and trailer. This is often enough to enable the
driver to regain control of the vehicle.
If the Trailer Stability Assist function's first
attempt is not adequate to stop the swaying
motion, the brakes are applied on all wheels
and engine power is temporarily reduced. As
the swaying motion begins to decrease and
the vehicle and trailer have once again
become stable, TSA stops regulating the
brakes/engine power and the driver regains
control of the vehicle.
NOTE
Trailer Stability Assist is deactivated if the
driver selects the sport mode by deactivat-
ing ESC in the center display's menu sys-
tem.
Trailer Stability Assist may not intervene if the
driver tries to compensate for the swaying
motion by moving the steering wheel rapidly,
because the system will then not be able to
determine if it is the trailer or the driver caus-
ing the swaying.
22 Trailer Stability Assist
23 Electronic Stability Control
434
When Trailer Stability Assist
is activated, the ESC symbol
is displayed in the instrument
panel.
Related information
Driving with a trailer (p. 431)
•
Electronic Stability Control (p. 273)
•
Checking trailer lights
When connecting a trailer, make sure that all
of the lights on the trailer are functioning
before starting to drive.
Trailer turn signals and brake lights
If one or more of the turn signals or brake
lights on the trailer is not working, a symbol
and message will be displayed in the instru-
ment panel. The other lights on the trailer
must be checked manually by the driver before
the vehicle is driven.
Symbol Message
Trailer turn indicator Right
•
turn indicator malfunction
Trailer turn indicator Left
•
turn indicator malfunction
Trailer brake light Malfunc-
•
tion
If any of the trailer's turn signal lights is not
working, the turn signal symbol in the instru-
ment panel will also flash more quickly than
normal.