submenu is only reset if the vehicle is sta-
tionary.
X
Press the
=
or
;
button to select the
Settings
menu.
X
Press the
:
or
9
button to select the
Factory setting
submenu.
X
Press the
a
button to confirm.
The
Reset all settings?
message is
shown.
X
Press the
:
or
9
button to select
Yes
or
No
.
X
Press the
a
button to confirm the selec-
tion.
If you have selected
Yes
, the multi-function
display shows a confirmation message.
Off-road driving
Overview of off-road driving systems
The systems which are relevant for off-road
driving are explained on the following pages:
R
4MATIC (permanent four-wheel drive), for
optimum traction
R
DSR (Downhill Speed Regulation)* (vehi-
cles with Off-Road Pro engineering pack-
age*), which assists you when driving
downhill
R
Off-road driving program* (vehicles with
Off-road Pro engineering package*), which
assists you when driving off-road
You will find further information about driving
off-road in the "Operation" section
(
Y
page 158).
4MATIC* (permanent four-wheel
drive)
4MATIC ensures that all four wheels are per-
manently driven. Together with ESP
®
and
ETS, it improves the traction of your vehicle
whenever a drive wheel spins due to insuffi-
cient grip.
G
Risk of accident
4MATIC cannot reduce the risk of an accident
if you drive too fast.
If a drive wheel spins due to insufficient grip:
R
only depress the accelerator pedal as far as
necessary when pulling away.
R
accelerate less when driving.
R
adapt your driving style to suit road and
traffic conditions.
i
In wintry driving conditions, the maximum
effect of 4MATIC can only be achieved if
you use winter tyres (M+S tyres), with snow
chains if necessary.
!
When testing the parking brake, operate
the vehicle only briefly (for a maximum of
ten seconds) on a brake test dynamometer.
When doing this, turn the key to position
0 or 1 in the ignition. Failure to do this can
cause damage to the drive train or the
brake system.
!
A function or performance test should
only be carried out on a twin-axle dyna-
mometer. If you wish to operate the vehicle
on such a dynamometer, please consult a
Mercedes-Benz Service Centre in advance.
You could otherwise damage the drive train
or the brake system.
DSR (Downhill Speed Regulation)*
(vehicles with the off-road engineer-
ing package*)
You will find information about driving off-
road in the "Operation" section
(
Y
page 158).
DSR is an aid to assist you when driving down-
hill. It keeps the speed of travel at the speed
selected on the on-board computer. The
steeper the downhill gradient, the greater the
DSR braking effect on the vehicle. When driv-
ing on flat stretches of road or on an uphill
Off-road driving
105
Controls
* optional
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