Matic (Permanent Four-Wheel Drive) - Mercedes-Benz M-Class Operator's Manual

Driving systems
246
Selector wheel : engaged: briefly press
X
selector wheel :.
Selector wheel : extends.
To select: turn selector wheel : until
X
indicator lamp ; comes on.
Trailer indicator = appears in the
multifunction display.
Highway level is set.
R
ADS (Adaptive Damping System) adapts
R
comfortable damping characteristics to
the current operating and driving
conditions.
The automatic transmission selects the
R
automatic drive program for a
comfortable driving style that provides
for optimum fuel consumption, changing
gear at optimum points.
While pulling away, the differential locks
R
are engaged.
Off-road driving systems

4MATIC (permanent four-wheel drive)

If you fail to adapt your driving style, 4MATIC
can neither reduce the risk of accident nor
override the laws of physics. 4MATIC cannot
take account of road, weather and traffic
conditions. 4MATIC is only an aid. You are
responsible for the distance to the vehicle in
front, for vehicle speed, for braking in good
time and for staying in your lane.
! Never tow the vehicle with one axle
raised. This may damage the transfer case.
Damage of this sort is not covered by the
Mercedes-Benz Limited Warranty. All
wheels must remain either on the ground
or be fully raised. Observe the instructions
for towing the vehicle with all wheels in full
contact with the ground.
! A function or performance test should
only be carried out on a two-axle
dynamometer. Before you operate the
vehicle on such a dynamometer, please
consult a qualified workshop. You could
otherwise damage the drive train or the
brake system.
4MATIC ensures that all four wheels are
permanently driven. Together with ESP
4ETS, it improves the traction of your vehicle
whenever a drive wheel spins due to
insufficient grip.
i
In wintry driving conditions, the maximum
effect of 4MATIC can only be achieved if
you use winter tires (M+S tires), with snow
chains if necessary.
Further information about "Driving off-road"
( page 187).
Y
DSR (Downhill Speed Regulation)
Important safety notes
DSR assists you when driving downhill. It
keeps the speed of travel at the speed set on
the on-board computer. The steeper the
downhill gradient, the greater the DSR
braking effect on the vehicle. When driving on
flat stretches of road or on an uphill gradient,
the DSR braking effect is minimal or
nonexistent.
DSR controls the set speed when it is active
and the automatic transmission is in the D,
R or N position. By accelerating or braking,
you can always drive at a higher or a lower
speed than that set on the on-board
computer.
Further information about "Driving off-road"
( page 187).
Y
If you fail to adapt your driving style, DSR can
neither reduce the risk of accident nor
override the laws of physics. DSR cannot take
account of road, weather and traffic
conditions. DSR is only an aid. You are
responsible for the distance to the vehicle in
front, for vehicle speed, for braking in good
time and for staying in your lane.
You are always responsible for keeping
control of the vehicle and for assessing
whether the downhill gradient can be
managed. DSR may not always be able to
keep to the set speed, depending on road
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and