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162 Driving and parking
ferential locks are active, the function indicator
lamps
4
light up.
The message
Differential lock active ABS and
ESP not available
and the warning and indicator
lamps å ÷ ! on the instrument clus‐
ter appear.
%
If one or more requirements have not been
fulfilled, the message
Switch-on conditions
Differential lock not fulfilled
The gear change must be restarted.
Disengaging the differential locks
Press the buttons in the following order 3,
#
2, 1.
or
To simultaneously disengage all differential
#
locks: press button 1.
or
To disengage the differential locks for the
#
rear and front axles: press button 2.
The differential locks are only disengaged when
the function indicator lamps are gone out again
4.
If you park the vehicle with the differential locks
engaged, they will be deactivated automatically
when the vehicle is started again. In some cases,
you have to drive a few metres before the differ‐
ential locks are properly disengaged. Therefore,
check if the function indicator lamps have gone
out when you restart the vehicle 4.
Observe any information which may be displayed
in the instrument cluster:
appears.
Warning and indicator lamps
R
Display messages
R
Function of the 4MATIC
4MATIC ensures that all four wheels are driven
when needed. Together with ESP
4MATIC improves the traction of your vehicle
whenever a driven wheel spins due to insuffi‐
cient traction.
If you fail to adapt your driving style, 4MATIC can
neither reduce the risk of an accident nor over‐
ride the laws of physics. 4MATIC cannot take
account of road, weather and traffic conditions.
4MATIC is only an aid. You are responsible espe‐
cially for maintaining a safe distance from the
vehicle in front, for vehicle speed, for braking in
good time and for staying in lane.
%
In wintry road conditions, the maximum
effect of 4MATIC can be achieved only if you
use winter tyres (M+S tyres), with snow
chains if necessary.
Refuelling
Refuelling the vehicle
& WARNING Risk of fire or explosion from
fuel
Fuels are highly flammable.
®
and 4ETS,
Fire, naked flames, smoking and crea‐
#
tion of sparks must be avoided.
Switch off the ignition and, if available,
#
the stationary heater, before and while
refuelling the vehicle.
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