Volvo V 90 Cross Country, Руководство пользователя

Страница: 408 / 594

STARTING AND DRIVING
406
Brake functions
The car's brakes are used to reduce the speed
or prevent the car from rolling.
Besides the foot brake and parking brake, the car
is equipped with several automatic brake assist
functions. These can assist the driver by not
needing to keep his/her foot on the brake pedal
when stationary at a traffic light, when starting on
an uphill gradient or when driving on a downhill
gradient.
Depending on the car's equipment, the following
auto braking functions are available:
•
Automatic braking when stationary (Auto
Hold)
•
Hill start assist (Hill Start Assist)
•
Auto braking after a collision
•
City Safety
Related information
•
Foot brake (p. 406)
•
Parking brake (p. 409)
•
Hill start assist (p. 412)
•
Automatic braking when stationary (p. 412)
•
Auto braking after a collision (p. 408)
Foot brake
The foot brake is used to reduce the car's speed
while driving.
Foot brake system
The car is equipped with two brake circuits. If a
brake circuit is damaged, the brake pedal will
engage deeper. Higher pressure on the pedal will
therefore be needed to produce the normal brak-
ing effect.
The driver's brake pedal pressure is assisted by a
brake servo.
WARNING
The brake servo only works when the engine
is running.
If the foot brake is used when the engine is
switched off then the pedal will feel stiff and a
higher pedal pressure must be used to brake the
car.
In very hilly terrain or when driving with a heavy
load the brakes can be relieved by using engine
braking in manual gearshift mode. Engine braking
is most efficiently used if the same gear is used
downhill as up.
Anti-lock braking system
The car has anti-lock brakes, Anti-lock Braking
System (ABS), which prevent the wheels from
locking while braking and allows maintained
steering control. Vibration may be felt in the
brake pedal when this is engaged and this is nor-
mal.
A short test of the ABS system is made automat-
ically after the engine has been started when the
driver releases the brake pedal. A further auto-
matic test of the system may be made at low
speed. The test may be experienced as pulses in
the brake pedal.
Braking on wet roads
When driving for a prolonged period of time in
heavy rain without braking, the braking effect may
be delayed slightly when next using the brakes.
This may also be the case after a car wash. It is
then necessary to depress the brake pedal more
forcefully. You should therefore maintain a
greater distance to the vehicles in front.
Brake the car firmly after driving on wet roads or
using a car wash. This warms up the brake discs,
enabling them to dry faster and protecting them
against corrosion. Bear in mind the current traffic
situation when braking.
Braking on salted roads
When driving on salted roads, a layer of salt may
form on the brake discs and brake linings. This
may extend braking distance. You should there-
fore maintain an extra large safety distance to
vehicles in front. In addition, make sure you do
the following: