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Driving
Electronic differential lock (EDS)*
The EDL operates along with the ABS in vehi-
cles equipped with Electr
onic Stability Con-
trol (ESC)*.
EDL helps the vehicle to start moving, accel-
erate and climb a gradient in slippery condi-
tions where this may otherwise be difficult or
even impossible.
It uses the ABS sensors to monitor the speed
of the driven wheels.
At speeds of up to approximately 80 km/h
(50 mph), it is able to balance out differences
in the speed of the driven wheels of approxi-
mately 100 rpm/min caused by a partially
slippery road surface. It does this by braking
the wheel which has lost traction and distrib-
uting more driving force to the other driven
wheel via the differential.
To prevent the disc brake of the braking
wheel from overheating, the EDL cuts out au-
tomatically if subjected to excessive loads.
The vehicle will continue to function normally
without EDL. For this reason, the driver is not
informed that the EDL has been switched off.
The EDL will switch on again automatically
when the brake has cooled down.
Control lamp
A malfunction in the EDL is indicated by the
ESC control l
amp . Take the vehicle to a
specialised workshop as soon as possible.
WARNING
●
When accelerating on a slippery surf
ace,
for example on ice and snow, press the ac-
celerator carefully. Despite EDL, the driven
wheels may start to spin. This could impair
the vehicle's stability.
●
Always adapt your driving style to suit
road conditions and the traffic situation. Do
not let the extra safety afforded by EDL
tempt you into taking any risks when driv-
ing, this can cause accidents.
CAUTION
Modifications to the vehicle (e.g. to the en-
gine, the brak
e system, running gear or any
components affecting the wheels and
tyres) could affect the efficiency of the EDL
›››
page 293.
Anti-lock brake system (ABS)
The anti-lock brake (ABS) system prevents
the wheel
s fr
om l
ocking during braking and is
an important part of the vehicle's active safe-
ty system.
How the ABS works
If one of the wheels turns too slowly in relation
to the vehicle's speed, and is close to locking,
the system will reduce the braking pressure to
this wheel. The driver is made aware of this
control process by a pulsating of the brake
pedal and audible noise. This is a deliberate
warning to the driver that one or more of the
wheels is tending to lock and the ABS control
function has intervened. In this situation it is
important to keep the brake pedal fully de-
pressed so the ABS can regulate the brake
application. Do not “pump”.
If you brake hard on a slippery road surface,
the best possible control is retained as the
wheels do not lock.
However, ABS will not necessarily guarantee
shorter braking distances in all conditions.
Braking distance could even be further if you
brake on gravel or on fresh snow on a slip-
pery surface.
The ABS system is faulty if:
●
The control lamp does not light up when
the ignition is switched on.
●
The control lamp does not go out again af-
ter a few seconds.
●
The control lamp lights up when the vehicle
is moving.
The vehicle can still be braked in the normal
way, without the ABS function. Take the
232
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