Volvo XC90 T8 TwinEngine Plug-In Hybrid, Owner'S Manual

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STARTING AND DRIVING
362
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
•
Detachable trailer hitch (p. 360)
•
Driving with a trailer (p. 359)
•
Electronic Stability Control (ESC) (p. 316)
Ignition modes
The vehicle's ignition can be put in various
modes (levels) to make different functions availa-
ble.
The vehicle's ignition has 3 modes:
0
,
I
, and
II
that can be used to operate various functions
without starting the engine. The following table
shows examples of which functions are available
in the respective modes.