Anti-lock braking system (abs) -19 – NISSAN 2009 Quest User Manual

Page 275

Advertising
background image

Parking brake break-in

Break-in the parking brake shoes whenever the
stopping effect of the parking brake is weakened
or whenever the parking brake shoes and/or
drum/rotors are replaced, in order to assure the
best brake performance.

This procedure is described in the vehicle service
manual and can be performed by a NISSAN
dealer.

ANTI-LOCK BRAKING SYSTEM
(ABS)

WARNING

The Anti-lock Braking System (ABS) is a

sophisticated device, but it cannot pre-
vent accidents resulting from careless
or dangerous driving techniques. It can
help maintain vehicle control during
braking on slippery surfaces. Remem-
ber that stopping distances on slippery
surfaces will be longer than on normal
surfaces even with ABS. Stopping dis-
tances may also be longer on rough,
gravel or snow covered roads, or if you
are using tire chains. Always maintain a
safe distance from the vehicle in front
of you. Ultimately, the driver is respon-
sible for safety.

Tire type and condition may also affect

braking effectiveness.

– When replacing tires, install the

specified size of tires on all four
wheels.

– When installing a spare tire, make

sure that it is the proper size and type
as specified on the Tire and Loading
Information label. See “Tire and
Loading Information label” in the
“Technical and consumer informa-
tion” section of this manual.

– For

detailed

information,

see

“Wheels and tires” in the “Mainte-
nance and do-it-yourself” section of
this manual.

The Anti-lock Braking System (ABS) controls the
brakes so the wheels do not lock during hard
braking or when braking on slippery surfaces.
The system detects the rotation speed at each
wheel and varies the brake fluid pressure to pre-
vent each wheel from locking and sliding. By
preventing each wheel from locking, the system
helps the driver maintain steering control and
helps to minimize swerving and spinning on slip-
pery surfaces.

Using the system

Depress the brake pedal and hold it down. De-
press the brake pedal with firm steady pressure,
but do not pump the brakes. The ABS will oper-
ate to prevent the wheels from locking up. Steer
the vehicle to avoid obstacles.

WARNING

Do not pump the brake pedal. Doing so
may

result

in

increased

stopping

distances.

Normal operation

The ABS operates at speeds above 3 - 6 MPH (5
- 10 km/h). The speed varies according to road
conditions.

When the ABS senses that one or more wheels
are close to locking up, the actuator rapidly ap-
plies and releases hydraulic pressure.

This action is similar to pumping the brakes very
quickly. You may feel a pulsation in the brake
pedal and hear a noise from under the hood or
feel a vibration from the actuator when it is oper-
ating. This is normal and indicates that the ABS is
operating properly. However, the pulsation may
indicate that road conditions are hazardous and
extra care is required while driving.

Starting and driving

5-19

REVIEW COPY—

2009 Quest (van)

Owners Manual—USA_English (nna)
07/17/08—debbie

Advertising