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78
On th e road
Startin g and automati cally releasing the
park ing brake
.. When you start to drive as usua l, the park-
ing brake is automatically released and your
vehicle begins to move.
When stopping at a traffic signa l or stopping
in city traffic on vehicles with an automatic
transmission, the parking brake can be ap-
plied. The vehicle does not have to be held
with the footbrake. The parking brake elimi-
nates the tendency to creep with a drive range
engaged. As soon as you drive off as usual,
the parking brake is released automatically
and the vehicle starts to move.
Starting on slopes
When starting on inclines, the start ing ass ist
prevents the vehicle from unintentionally roll-
ing back. The braking force of the parking
brake is not released until sufficient driving
force has been built up at the whee ls.
(D
Tips
For safety reasons, the parking brake is re-
leased automatically only when the driv-
er's safety belt is engaged in the buckle.
Starting off with a trailer
To prevent rolling back unintentionally on an
incline, do the following:
.. Keep the switch @ c::> page 76, fig . 78
pulled and depress the accelerator . The
parking brake stays applied and prevents
the vehicle from rolling backward.
.. You can release the switch @ once you are
sure that you are developing enough driving
force at the wheels by depressing the accel-
erator.
Depending on the weight of the rig (vehicle
and trai ler) and the severity of the incline, you
may roll backwards as you start . You can pre-
vent rolling backwards by holding the parking
brake switch @ pulled out and accelerating -
just as you would when starting on a hill with
a conventional hand brake.
Emergency braking
In the event that the conventional brake sys-
tem fails or locks.
.. In an emergency, pull the switch @
c::> page 76, fig. 78 and continue to pull it to
slow your vehicle down with the parking
brake.
.. As soon as you release the switch @ or ac-
celerate, t he braking process stops.
If you pull the switch @ and hold it above a
speed of about 5 mph (8 km/h), the emergen-
cy bra king funct ion is initiated. The vehicle is
braked at all fou r whee ls by activating the hy-
draulic brake syst em. The brake performance
is similar to making an emergency stop
c::>
,& .
In order not to act ivate the eme rgency brak-
ing by mist ake, an audib le warning tone (buz-
zer) sounds when the switch @ is pulled. As
soon as the switch @ is released, or the accel-
erator pedal is depressed, emergency braking
stops.
A
WARNING
,-
Emergency braking should only be used in
an emergency, when the normal foot brake
has failed or the brake pedal is obstructed .
Using the par king brake to perform eme r-
gency braking will slow your vehicle down
as if you had made a full brake application.
The laws of physics cannot be suspended
even with ESC and its associated compo -
nents (ABS, ASR, EDS) . In corners and
when road or weathe r cond itions are bad,
a full brake application can cause the vehi-
cle to skid or the rear end to break away-
risking an accident.
Speed
warning
system
Overview
The speed warning system helps you to keep
your driving speed below a set speed limit.
The speed warn ing system warns if the driver
exceeds a previously sto red maximum speed.
A warning tone will sound as soon as the
Ill-
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