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Driving
lights will switch on. The hazard warning
lights ar
e automatically switched off when
you accelerate or restart the vehicle.
●
On long, steep gradients, reduce your
speed and change to a lower gear (manual
gearbox) or move the selector lever to a lower
gear position (automatic gearbox). This uses
the force of the engine and the brakes do not
suffer as much. If you still have to brake, do
so intermittently, pressing down repeatedly
on the brake pedal.
●
Vehicle modifications (e.g. to the engine,
brakes, frame or a combination of wheels and
tyres) could impair the brake assist systems
››› page 194, Accessories and modifications
to the vehicle.
●
In the event of a fault in the ABS system,
the ESC, TCS and EDL are switched off auto-
matically. A fault in the ABS is indicated by
the ››› page 159 warning lamp.
Control lamp
The warning lamp i
l
lumin
ates if the brake
fluid level is too low or if there is a fault in the
ABS system.
The informative display indicates:
Brake fluid Instruction Manual!
Stop the vehicle, switch off the engine and
check the level of the brake fluid
››› page 211
WARNING
●
The fol
lowing indications must be taken in-
to account when opening the engine com-
partment to check the brake fluid
››› page 204, Engine compartment.
●
If the warning lamp illuminates together
with the warning lamp ››› page 159, ,
stop the vehicle! Go to a technical service.
●
A fault in the brake system or in the Anti-
lock brake system (ABS) can lead to longer
braking distances – Risk of accident!
Brakes
Wear
The r
at
e of
wear of the brake pads depends
on the driving style and on the way in which
the vehicle is used. The brake pads will wear
more quickly if you use your vehicle frequent-
ly in urban traffic and short trips or drive in a
sporty style. Under these demanding condi-
tions, visit your specialised service, even be-
fore the scheduled service date, so that the
thickness of the brake pads can be meas-
ured.
Wet roads or road salt
If brakes are wet or frozen, or if you are driv-
ing on roads which have been gritted with
salt, braking power may set in later than nor-
mal. Dry the brakes as soon as possible by
braking repeatedly.
Corrosion
Long periods of inactivity and little use can
lead to rust on the brake discs and dirt on the
brake pads. Where the brake system is sub-
jected to light stress or in the case of corro-
sion, clean the brake discs by braking fully
several times at a high speed.
Brake system fault
If you notice that the braking distance sud-
denly increases and the brake pedal can be
pressed down more fully, there may be a fault
in the brake system. Visit a specialised serv-
ice immediately and adjust your driving style
to the extent of the damage and to limit the
effect of the brakes.
Low brake fluid level
Insufficient brake fluid could cause faults in
the brake system. The brake fluid level is con-
trolled electronically ››› page 157, Control
lamp.
Brake servo
The brake servo supplements the pressure
you exert on the brake pedal. The brake servo
only works when the engine is running.
157
Technical dataAdviceOperationEmergenciesSafety
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