Volvo S90 2020 Owner's Manual page 490

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STARTING AND DRIVING
||
IMPORTANT
When the engine is switched off, the con-
stant battery voltage to the trailer connec-
tor can be switched off automatically so as
not to drain the starter battery.
Trailer weights
WARNING
Follow the stated recommendations for
trailer weights. Otherwise, the car and
trailer may be difficult to control in the
event of sudden movement and braking.
NOTE
The stated maximum permitted trailer
weights are those permitted by Volvo.
National vehicle regulations can further
limit trailer weights and speeds. Towbars
can be certified for higher towing weights
than the car can actually tow.
Level control*
The car's system for level control endeavours
to maintain a constant height regardless of
load (up to the maximum permissible weight).
When the car is stationary the rear of the car
lowers slightly, which is normal.
488
When driving in hilly terrain and hot
climates
Under certain circumstances, there may be a
risk of overheating when towing a trailer. If the
engine and drive system overheats, a warning
symbol comes on in the driver display and a
message is displayed.
The following applies for cars with automatic
gearbox:
The automatic gearbox adapts the gears
depending on load and engine speed.
Steep inclines
Do not lock the automatic gearbox in a higher
gear than the engine "can cope with" - it is not
always a good idea to drive at a high gear with
low engine speed.
Parking on a hill
1.
Depress the brake pedal fully.
2. Activate the parking brake.
3. Select gear position P.
4. Release the brake pedal.
Block the wheels with chocks when parking a
car with hitched trailer on a hill.
Starting on a hill
1.
Depress the brake pedal fully.
2. Select gear position D.
3. Releasing the parking brake.
4. Release the brake pedal and start driving
off.
Related information
Trailer stability assist* (p. 489)
Checking trailer lamps (p. 490)
Towing capacity and towball load
(p. 670)
Overheating in the engine and drive sys-
tem (p. 480)
Adverse driving conditions for engine oil
(p. 676)
Extendable and retractable towbar*
(p. 485)
* Option/accessory.

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