Owner's Manual - Page 282

For 2012 XC70.

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06 During your trip
Towing a trailer
06
282
between approximately 45-55 mph (70-90 km/
h).
Swaying may be caused by factors such as:
The vehicle and trailer are hit by a sudden,
strong crosswind
The vehicle and trailer are traveling on an
uneven road surface or drive over a bump
Sudden movements of the steering wheel
Facts about TSA
TSA intervenes at speeds above approxi-
mately 40 mph (60 km/h)
The DSTC symbol ( ) in the instru-
ment panel will flash when TSA is working
If the driver switches off the DSTC sys-
tem's Spin Control function, TSA will also
be switched off (but will be on again the
next time the engine is started)
TSA may not intervene when the vehicle
and trailer begin to sway if the driver tries
to compensate for the swaying motion by
moving the steering wheel rapidly
How TSA works
Once swaying has begun, it can be very diffi-
cult to stop, which makes it difficult to control
the vehicle and trailer.
The TSA system continuously monitors the
vehicle'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 vehicle and trailer. This is often enough to
enable the driver to regain control of the vehi-
cle.
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 stable, TSA will no stop
regulating the brakes/engine power and the
driver regains control of the vehicle.
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