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R
The vehicle is secured with the electric park‐
ing brake.
In the following situations, the vehicle is held by
the transmission position j or by the electric
parking brake:
R
The seat belt is unfastened and the driver's
door is opened.
R
The vehicle is switched off.
R
There is a malfunction in the system or the
power supply is insufficient.
Start-off assist
Function of the start-off assist
The start-off assist enables optimal vehicle
acceleration from a standstill. For this, a suitably
high-grip road surface is required, the tires and
vehicle must also be in good condition.
Do not activate the start-off assist on public
roads.
Be sure to observe the safety notes and informa‐
tion on ESP
®
.
Activating the start-off assist
&
WARNING Risk of skidding and having
an accident from wheels spinning
When you use start-off assist, individual
wheels could spin and you could lose control
of the vehicle.
If ESP
®
is deactivated, there is a risk of skid‐
ding and accident!
#
Make sure that no persons or obstacles
are in the close vicinity of your vehicle.
#
Deactivating ESP
®
(/ page 199).
#
Move the steering wheel to the straight-
ahead position.
#
Depress the brake pedal firmly with your left
foot and keep it depressed.
#
Engage the h drive position (/ page 177).
#
Select the sportiest available drive program
B or C(/ page 174).
#
Rapidly depress the accelerator pedal fully.
#
Take your foot off the brake, but keep the
accelerator pedal depressed.
The vehicle pulls away at maximum accelera‐
tion.
#
Switch on ESP
®
once the acceleration proce‐
dure is complete. ESP
®
will otherwise not be
able to stabilize the vehicle if the vehicle
starts to skid or a wheel starts to spin.
Canceling start-off assist
#
Remove your foot from the accelerator pedal.
#
Reactivate the ESP
®
.
AIRMATIC
Function of AIRMATIC
AIRMATIC is an air suspension system with varia‐
ble damping for improved driving comfort and
vehicle dynamics. The all-round level control sys‐
tem ensures the best possible suspension and
constant ground clearance, even with a laden
vehicle. When driving at speed, the vehicle is
lowered automatically to improve driving safety
and to reduce fuel consumption. You also have
Driving and parking
225
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