Hill Start Assist; Automatic Braking When Stationary - Volvo V90 2017 Owner's Manual

STARTING AND DRIVING
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Symbols in the driver display
Symbol Specification
If the symbol flashes, it indicates a
fault has occurred. See the mes-
sage in the driver display.
Fault in brake system. See the
message in the driver display.
Information message in driver dis-
play.
Message examples:
•
Parking brake Service required
•
Parking brake System overheated
•
Parking brake Temporarily unavailable
Related information
•
Brake functions (p. 406)
•
Using the parking brake (p. 410)
•
Parking brake (p. 409)
•
Using jump starting with another battery
(p. 388)
Applies to automatic gearbox.
13
412

Hill start assist

Hill start assist, Hill Start Assist (HSA), prevents
the car from rolling backwards when starting on
an uphill gradient. When reversing uphill, it pre-
vents the car from rolling forwards.
The function means that the pedal pressure in
the brake system remains for several seconds
while the driver's foot is moved from brake pedal
to accelerator pedal.
The temporary braking effect releases after sev-
eral seconds or when the driver accelerates.
Hill start assist is available even if the function for
automatic braking when stationary (Auto hold) is
deactivated.
Related information
•
Brake functions (p. 406)
•
Automatic braking when stationary (p. 412)

Automatic braking when stationary

Automatic braking when stationary (Auto Hold)
means that the driver can release the brake
pedal while maintaining braking effect when the
car has stopped at traffic lights or a junction.
Function
When the car has stopped, the brakes are acti-
vated automatically. The function can use either
foot brake or parking brake to hold the car sta-
tionary and it works on all gradients. When the
accelerator pedal is depressed again, the brakes
are released.
When braking to a stop on a downhill or uphill
gradient - depress the brake pedal a bit harder
before releasing to ensure that the car does not
roll at all.
If the driver switches off the engine when the car
is stationary, the parking brake is applied.
Automatic deactivation
The function is deactivated automatically:
•
when the driver's door is open and the driv-
er's seatbelt is unfastened.
•
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in gear position N .