Hill Hold Control (HHC)
When driving on slopes, HHC allows you to move your foot from the brake pedal
to the accelerator pedal without having to use the handbrake.
The system holds the brake pressure produced by the activation of the brake
pedal for approx. 2 seconds after the brake pedal is released.
The brake pressure drops gradually the more you operate the accelerator pedal. If
the vehicle does not start off within 2 seconds, it starts to roll back.
The HHC is active on slopes of 5% and steeper, provided that the driver's door is
closed. HHC is always only active on slopes when in forward or reverse start off.
When driving downhill, it is inactive.
Antilock Braking System (ABS)
First read and observe the introductory information and safety warn-
ings on page 110.
ABS prevents the wheels locking when braking. Thus helping the driver to main-
tain control of the vehicle.
The intervention of the ABS is noticeable from the
pulsating movements of the
brake pedal
which is accompanied by noises.
When the ABS system is active, do not brake periodically or reduce the pressure
on the brake pedal.
Traction Control System (ASR)
Fig. 100
TCS button
First read and observe the introductory information and safety warn-
ings on page 110.
If the wheels are slipping, the ASR system adapts the engine speed to the condi-
tions of the road surface. The TCS makes it much easier to start off, accelerate
and climb steep hills even if the conditions of the road surface are unfavourable.
The TCS function is automatically activated each time the ignition is switched on.
During an intervention of the system, the TCS warning light
flashes in the in-
strument cluster.
The TCS should normally always be switched on. It may be advisable to switch off
the system in certain exceptional circumstances, such as:
›
when driving with snow chains;
›
when driving in deep snow or on a very loose surface;
›
when it is necessary to “rock a vehicle free” when it has got stuck.
Ensure the TCS is switched on again afterwards.
You can switch the ASR off and on again as you wish by pressing the symbol key
» Fig. 100
. The ASR control light
comes on in the instrument cluster when the
ASR is switched off.
The TCS warning light
» page 24
lights up in the instrument cluster when there
is a fault on the TCS.
Electronic Differential Lock (EDL)
First read and observe the introductory information and safety warn-
ings on page 110.
If one of the wheels starts to spin, the EDL system brakes the spinning wheel and
transfers the driving force to the other wheels. This ensures the stability of the
vehicle and a quick journey.
In the event of severe stresses, the EDL switches off automatically in order to
avoid excessive heat generation in the disc brake of the wheel being braked. The
vehicle can continue to be driven and has the same characteristics as a vehicle
not fitted with EDL. The EDL switches on again automatically as soon as the
brake has cooled down.
111
Assist systems
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