Your
Driving
and
the
Road
150
Anti-Lock Brakes
(CONT.)
And this light on the instrument panel
will go on when you start your vehicle.
When you start your vehicle and begin
to drive away you may hear a
momentary motor or clicking noise and
you may even notice that your brake
pedal moves a little while this is going
on. This is the
ABS
system testing itself.
If
you have your foot on the brake
pedal, this check won’t happen until the
vehicle goes about
4
mph
(6
lm/h) or
until you take your foot off the brake
pedal.
You’ll also hear a clicking noise the
next time the vehicle goes about
4
mph
(6
lun/h).
If
there’s a problem with the anti-lock
brake system, the anti-lock brake
system warning light will stay on or
flash. See the
Index
under
Anti-Lock
Brake System Warning Light.
Here’s how anti-lock works. Let’s say
the road is wet. You’re driving safely.
Suddenly an animal jumps out in front
of you.
You slam on the brakes. Here’s what
happens with
ABS.
A
computer senses that wheels are
slowing down. The computer separately
works the brakes at each front wheel
and at the rear wheels.
The anti-lock system can change the
brake pressure faster than any driver
could. The computer is programmed to
make the most of available tire and road
conditions.
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