Volvo XC40 2019 Owner's Manual page 404

STARTING AND DRIVING
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ing and allows maintained steering control.
Vibration may be felt in the brake pedal when
this is engaged and this is normal.
A short test of the ABS system is made auto-
matically after the car has been started when
the driver releases the brake pedal. A further
automatic test of the system may be made at
low speed. The test may be felt as pulses in
the brake pedal.
Symbols in the driver display
Symbol Specification
Check the brake fluid level. If the
level is low, fill with brake fluid
and check for the cause of the
brake fluid loss.
Constant glow for 2 seconds
when the engine is started: Auto-
matic function check.
Constant glow for more than 2
seconds: Fault in the ABS sys-
tem. The car's normal brake sys-
tem is still working, but without
the ABS function.
2 Anti-lock Braking System
3 Brake Assist System
402
WARNING
If both the warning lamps for brake fault
and ABS fault illuminate at the same time,
a fault has occurred in the brake system.
If the level in the brake fluid reservoir is
•
normal at this stage, drive carefully to
the nearest workshop and have the
brake system checked - an authorised
Volvo workshop is recommended.
If the brake fluid is below the MIN level
•
in the brake fluid reservoir, do not drive
further before topping up the brake
fluid. The reason for the loss of brake
fluid must be investigated.
Related information
Brake assistance (p. 402)
•
Automatic braking when stationary
•
(p. 407)
Help when starting on a hill (p. 408)
•
Braking on wet roads (p. 403)
•
Braking on gritted roads (p. 403)
•
Brake system maintenance (p. 403)
•
Brake lights (p. 148)
•
Brake assistance
The brake assist system (BAS 3
increase brake force during braking, and can
thereby shorten the braking distance.
The system detects the way in which the
driver brakes and increases brake force where
necessary. The brake force can be boosted up
to the level when the ABS system is engaged.
The function is suspended when the pressure
on the brake pedal decreases.
NOTE
When BAS is activated the brake pedal
lowers slightly more than usual, depress
(hold) the brake pedal as long as neces-
sary.
When the brake pedal is released, all brak-
ing ceases.
Related information
Foot brake (p. 401)
•
) helps to