Abs (anti-lock braking system), Bas (brake assist), Safety – Mercedes-Benz C-Class 2011 Owners Manual User Manual

Page 64: Driving safety systems

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section must never be exploited in a reckless
or dangerous manner which could jeopardize
the user's safety or the safety of others.
Always adjust your driving style to the
prevailing road and weather conditions and
keep a safe distance to other road users and
objects on the street.
If a driving system malfunctions, other driving
safety systems may also switch off. Observe
indicator and warning lamps that may come
on as well as messages in the multifunction
display that may appear.

i

In wintry driving conditions, always use

winter tires (M+S tires) and if necessary,
snow chains. Only in this way will the
driving safety systems described in this
section work as effectively as possible.

ABS (Anti-lock Braking System)

Important safety notes

G

Warning

Observe "Important safety notes"
(

Y

page 61).

G

Warning

Do not pump the brake pedal. Use firm, steady
brake pedal pressure instead. Pumping the
brake pedal defeats the purpose of the ABS
and significantly reduces braking
effectiveness.

ABS regulates brake pressure in such a way
that the wheels do not lock when you brake.
This allows you to continue steering the
vehicle when braking.
ABS works from a speed of about
5 mph (8 km/h) upwards, regardless of road-
surface conditions. ABS works on slippery
surfaces, even when you only brake gently.
The ! warning lamp in the instrument
cluster lights up when the ignition is switched
on. It goes out when the engine is running.

Braking

If ABS intervenes when braking, you will feel
a pulsing in the brake pedal.

X

If ABS intervenes: continue to depress the

brake pedal with force until the braking
situation is over.

X

To make a full brake application:

depress the brake pedal with full force.

G

Warning

If the ABS malfunctions, other driving systems
such as the BAS or the ESP

®

are also switched

off. Observe indicator and warning lamps that
may come on as well as messages in the
multifunction display that may appear.
If the ABS malfunctions, the wheels may lock
during hard braking, reducing the steering
capability and extending the braking distance.

The pulsating brake pedal can be an
indication of hazardous road conditions and
functions as a reminder to take extra care
while driving.

BAS (Brake Assist)

G

Warning

Observe "Important safety notes"
(

Y

page 61).

BAS operates in emergency braking
situations. If you depress the brake pedal
quickly, BAS automatically boosts the braking
force, thus shortening the stopping distance.

X

Keep the brake pedal firmly depressed until
the emergency braking situation is over.
ABS prevents the wheels from locking.

The brakes will function as usual once you
release the brake pedal. BAS is deactivated.

G

Warning

If the BAS malfunctions, the brake system still
functions, but without the additional brake
boost available that the BAS would normally
provide in an emergency braking maneuver.
Therefore, the braking distance may increase.

62

Driving safety systems

Safety

BA 204 USA, CA Edition A 2011; 1; 5, en-US
hereepe

Version: 3.0.3.6

2010-05-20T09:17:30+02:00 - Seite 62

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