Abs (anti-lock braking system), Bas (brake assist system), Safety – Mercedes-Benz G-Class 2012 Owners Manual User Manual

Page 56: Driving safety systems

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R

braking distance is increased

R

vehicle stability in standard driving
maneuvers is increased

Make sure the differential locks are switched
on at all times except when driving off-road
for example. Switch on the differential locks
immediately when returning from off-road
driving.

i

Please note that the driving safety

systems described only work as effectively
as possible if there is adequate contact
between the tires and the road surface. Pay
particular attention to the information
regarding tires, recommended minimum
tire tread depths, etc. in the "Wheels and
tires" section (

Y

page 242).

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 53).

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 operates above a speed of about
5 mph(8 km/h) regardless of road-surface
conditions, provided the differential locks are
not active. ABS works on slippery surfaces,
even when you only brake gently.

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 ! 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.

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

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.

Off-road ABS

If the LOW shift range (

Y

page 145) is

selected on the transfer case, an ABS system
specifically suited to off-road terrain is
activated.
At speeds below 37 mph(60 km/h), the front
wheels lock periodically when braking. The
digging-in effect achieved in the process
reduces the stopping distance on off-road
terrain. This limits steering capability.

BAS (Brake Assist System)

i

Observe the "Important safety notes"

section (

Y

page 53).

54

Driving safety systems

Safety

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