Driving Safety Systems - Mercedes-Benz B-Class 2011 Owner's Manual

ABS (Anti-lock Braking System)
Important safety notes
G
WARNING
If ABS is faulty, the wheels could lock when
braking. This limits the steerability of the vehi-
cle when braking and the braking distance
may increase.
If ABS is deactivated due to a malfunction,
then BAS and ESP are also deactivated. There
is an increased risk of your vehicle skidding in
certain situations.
You should always adapt your driving style to
suit the prevailing road and weather condi-
tions.
ABS regulates brake pressure in such a way
that the wheels do not lock when you brake.
This allows you to continue steering the vehi-
cle when braking.
ABS works from a speed of about 8 km/h
upwards, regardless of road-surface condi-
tions. ABS works on slippery surfaces, even
when you only brake gently.
The yellow ! ABS warning lamp in the
instrument cluster lights up when the ignition
is switched on. It goes out when the engine is
running.
i
Observe the "Important safety notes" sec-
tion ( page 62).
Y
Brakes
G
WARNING
Do not depress the brake pedal several times
in quick succession (pumping). Pumping the
brake pedal reduces the braking effect. You
might otherwise not be able to stop the vehi-
cle in time and could cause an accident.
Depress the brake pedal firmly and smoothly.
If ABS intervenes: continue to depress the
X
brake pedal with force until the braking sit-
uation is over.
To make a full brake application:
X
depress the brake pedal with full force.

Driving safety systems

If ABS intervenes when braking, you will feel
a pulsing in the brake pedal.
The pulsating brake pedal can be an indica-
tion of hazardous road conditions and func-
tions as a reminder to take extra care while
driving.
BAS (Brake Assist)
G
WARNING
If BAS has malfunctioned, the braking system
remains available with full brake boosting
effect. However, braking force is not auto-
matically increased in emergency braking sit-
uations and the stopping distance may
increase.
Keep the brake pedal firmly depressed until
X
the emergency braking situation is over.
ABS prevents the wheels from locking.
BAS operates in emergency braking situa-
tions. If you depress the brake pedal quickly,
BAS automatically boosts the braking force,
thus shortening the stopping distance.
The brakes will function as usual once you
release the brake pedal. BAS is deactivated.
i
Observe the "Important safety notes" sec-
tion ( page 62).
Y
COLLISION PREVENTION ASSIST
General notes
COLLISION PREVENTION ASSIST consists of
the BAS PLUS system and the distance warn-
ing signal, which are described in the follow-
ing.
Distance warning
G
WARNING
The distance warning signal cannot always
clearly identify objects and complex traffic
situations.
63
Z