Volvo S 90, Owner'S Manual

Page: 363 / 548

STARTING AND DRIVING
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* Option/accessory, for more information, see Introduction. 361
From the center display's Function view
Models without the drive mode
control have a button for
Hill
Descent Control
in the center
display's Function view.
•
Tap the button to activate. A light in the but-
ton illuminates when the function is acti-
vated.
NOTE
The function is deactivated when driving at
higher speeds and must be reactivated at
lower speeds if so desired.
Related information
•
Brake functions (p. 358)
•
Low Speed Control (LSC) (p. 397)
•
Drive modes
*
(p. 384)
Hill Start Assist
Hill Start Assist (HSA) helps prevent the vehicle
from rolling backwards when starting up a hill. If
you are backing up a hill, HSA helps prevent the
vehicle from rolling forward.
HSA makes it easier to start or back up on a hill
by retaining pressure on the brake pedal for sev-
eral seconds after the pedal has been released in
order to keep the vehicle at a standstill.
The brakes will be released after several seconds
or when the driver presses the accelerator pedal.
HSA is available even if the Auto-hold braking
function is turned off.
Related information
•
Brake functions (p. 358)
•
Auto-hold brake function (p. 358)
Parking brake
The electric parking brake helps to keep the
vehicle stationary when it is parked.
Parking brake control in the tunnel console between the
front seats
NOTE
•
A faint sound from the parking brake's
electric motor can be heard when the
parking brake is being applied. This
sound can also be heard during the auto-
matic function check of the parking
brake.
•
The brake pedal will move slightly when
the electric parking brake is applied or
released.
If the vehicle is not moving when the parking
brake is applied, only the rear wheels are affec-