·
If you drive to close to the vehicle in
front, brake support systems cannot
prevent an accident.
·
Always use suitable tyres. Driving stabili-
ty depends on the tyre grip.
·
Always keep the footwell under the ped-
als clear so that the brake pedal can
move freely.
— The ESC, ABS and TCS can only function
properly if all four wheels are fitted with
the correct tyres → .
— If the ABS fails, ESC, TCS and EDL will also
cease to function.
WARNING
The effectiveness of ESC can be reduced
considerably if other components and sys-
tems which affect driving dynamics are not
serviced properly or are not functioning
properly. This applies in particular to
changes to the suspension and wheel and
tyre combinations that have not been ap-
proved.
·
Repairs and modifications to your vehi-
cle should only be carried out by a quali-
fied workshop.
·
Always use suitable tyres. Driving stabili-
ty depends on the tyre grip.
Electronic Stability Control (ESC)
ESC helps to reduce the risk of skidding and
to improve driving stability in certain driving
situations → .
Traction control system (TCS)
TCS reduces the drive output if wheelspin oc-
curs and adapts the output to suit the road
surface conditions. The TCS makes it easier to
pull away, accelerate and drive up hills → .
Anti-lock brake system (ABS)
ABS can prevent the wheels from locking
when the brakes are applied up until the
point where the vehicle is nearly stationary
and can help the driver to steer the vehicle
and keep it under control → .
Brake Assist system
BAS can help to reduce the stopping distance.
If the driver depresses the brake pedal quick-
ly in an emergency braking situation, the BAS
will increase the braking force.
Electronic differential lock (EDL and XDS)
EDL brakes a spinning wheel automatically
and distributes the drive force to the other
drive wheels.
XDS uses braking interventions to improve
traction and keep the vehicle in lane.
Automatic Post-Collision Braking System
The multicollision brake automatically trig-
gers braking if the airbag control unit detects
a collision in an accident situation.
Requirements for automatic braking:
— The driver does not depress the accelera-
tor pedal.
Electronic brake pressure distribution system
(EBD)
The electronic brake pressure distribution
system controls the brake pressure for the
rear wheels and thereby ensures the opti-
mum distribution of brake pressure between
the front and rear axles. EBD can prevent the
rear of the vehicle breaking away due to ex-
cess braking of the rear wheels.
Electromechanical brake servo
The electromechanical brake servo (EBS) sup-
ports the driver’s foot movement when the
ignition is switched on, and boosts the pres-
sure applied to the brake pedal by the driver
→ . In the event of a braking intervention
by a driver assist system, e.g. when ACC is
regulating or during emergency braking, the
brake pedal can move automatically.
The brake pressure boost will reduce gradual-
ly after you switch off the ignition. Messages
are displayed on the instrument cluster dis-
play if the vehicle is still held by means of the
brake pedal. The brake servo function is re-
stricted in this case.
Secure the stationary vehicle against rolling
190
Parking and manoeuvring