Driving and operating
Fault
147
ABS starts to regulate brake pressure
as soon as a wheel shows a tendency
to lock. The vehicle remains
Brakes
The brake system comprises two
independent brake circuits.
If a brake circuit fails, the vehicle can
still be braked using the other brake
circuit. However, braking effect is
achieved only when the brake pedal
is depressed firmly. Considerably
more force is needed for this. The
braking distance is extended. Seek
the assistance of a workshop before
continuing the journey.
9 Warning
steerable, even during hard braking.
ABS control is made apparent
through a pulse in the brake pedal
and the noise of the regulation
process.
For optimum braking, keep the brake
pedal fully depressed throughout the
braking process, despite the fact that
the pedal is pulsating. Do not reduce
the pressure on the pedal.
If there is a fault in the ABS, the
wheels may be liable to lock due
to braking that is heavier than
normal. The advantages of ABS
are no longer available. During
hard braking, the vehicle can no
longer be steered and may
swerve.
Have the cause of the fault remedied
by a workshop.
After starting-off the system performs
a self-test which may be audible.
Control indicator u 3 92.
When the engine is not running, the
support of the brake servo unit
disappears once the brake pedal has
been depressed once or twice.
Parking brake
Adaptive brake light
During full braking, all three brake
lights flash for the duration of ABS
control.
Braking effect is not reduced, but
braking requires significantly greater
force. It is especially important to bear
this in mind when being towed.
Control indicator R 3 92.
Antilock brake system
Antilock brake system (ABS)
prevents the wheels from locking.
