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Starting off with a trailer
To prevent rolling back unintentionally on an
incline, do the following:
11-Keep the switch© pulled and depress the
accelerator. The park ing brake stays applied
and prevents the vehicle from rolling back-
ward .
11-You can release the switch<®> once you are
sure that you are develop ing enough for-
ward momentum at the wheels as you de-
press the accelerator.
Depending on the weight of the rig (vehicle
and tra iler) 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<®) pull ed 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.
11-In an emergency, pull the switch(®) and
contin ue to pull it to slow your vehicle down
with the parking brake.
11-As soon as you release the switch (®) or ac-
celerate, the braking process stops.
If you pull the switch<®> and hold it above a
speed of about 5 mph (8 km/h), the emergen-
cy braking function is initiated. The vehicle is
braked at all four wheels by activating the hy-
draulic brake system . The brake performance
is similar to making an emergency stop
~
&..
In order not to activate the emergency brak-
ing by m istake, an audible warning tone (buz-
zer) sounds when the switch C®> is pulled. As
soon as the switch(®) is released, or the accel-
erator pedal is depressed, emergency braking
stops.
_& WARNING
Emergency braking should only be used in
an emergency, when the normal foot brake
has failed or the brake pedal is obstructed .
On th e ro a d 87
Using the parking brake to perform emer-
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 it s associated compo-
nents (ABS, ASR, EDL). In corners and
when road or weathe r conditions are bad,
a full brake appl ication can cause the vehi-
cle to skid or the rear end to break away -
risking an accident.
Start-Stop-System
'
Description
Applies to vehicles: wit h Start -Stop-System
The Start-Stop-System can help increase fuel
economy and reduce CO2 emissions .
In the Start-Stop-mode, the engine shuts off
automat ically w hen the vehicle is stopped,
such as at a traffic light . The ignition remains
switched on du ring this stop phase. The en-
gine wi ll be automat ically restarted when
needed.
The last Start-Stop-System sett ing (on/off us-
ing the button
IO\l~I) will be restored when the
ignition is turned on. The LED in the
1(7() .. 1 but-
ton tu rns on when t he Star t-Stop-System is
switc hed off man ually.
Basic requirements for the Start -Stop
mode
- The driver's door is closed.
- The driver' seat belt is latched .
- The hood is closed .
- The vehicle must have been driven faster
than
2.5 mph (4 km/h) since the last stop.
- A trailer is not hitched to the vehicle.
_& WARNING
- Never let the vehicle roll with the engine
switched off. You could lose control over
the vehicle. This can lead to a collision
and serious inj uries.
- The brake booster and the steering sup-
port do not work while the engine is
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