2013 MERCEDES-BENZ M-Class lock

X
Pull protective cap 0002in the direction of the
arrow, out of the ball coupling recess.
X Place protective cap 0002in the ball coupling
recess. Ball coupling recess
Holes in the ball coupling and ball coupling recess
X Inser tthe ball coupling horizontally into ball
coupling recess 0003in the direction of the
arrow until the holes in ball coupling 001Fare
in line with the holes in ball coupling
recess 001E. Bolt X
Slide bolt 001Cinto the hole in the ball
coupling recess and the ball coupling to the
stop. Bolt and spring cotter
X
Secure the bolt using spring cotter 001D. Correctly installed and secured ball coupling
X
Check the ball coupling, bolt and spring
cotter for correct installation.
If the ball coupling cannot be correctly
mounted, remove the ball coupling. Under
these circumstances, the ball coupling must
not be used for trailer towing.
If the ball coupling cannot be locked and the
key cannot be removed, remove the ball
coupling and clean it. If the ball coupling can
still not be installed (locked) after it has been
cleaned, remove the ball coupling. The trailer
tow hitch must then not be used to tow a
trailer, as safe operation cannot be
guaranteed.
Have the entire trailer tow hitch checked at a
qualified specialist workshop. 256
Towing
atrailerDriving an d parking

Coupling up a trailer
! Do no tconnectt he trailer's brake system
(if featured) to the hydraulic brake system
of the towing vehicle, as the latter is
equipped with an anti-lock brake system.
Doing so will result in a loss of function of
the brake systems of both the vehicle and
the trailer.
X Make sure that the automatic transmission
is set to position P.
X Apply the vehicle's electric parking brake.
X Start the engine.
X Vehicles with the AIRMATIC package:
select highway level.
X Vehicles with ADS: set ADS toAUTOor
COMF.
X Switch off the engine.
X Close all doors and the tailgate.
X Couple up the trailer.
X Establish all electrical connections.
X Check that the trailer lighting system is
working.
i Vehicles with the AIRMATIC package:
with a trailer attached, the vehicle will
always remain at highway level. When
coupling up a trailer, please observe the
following:
R Unless highway level has been set
manually, the vehicle is automatically
lowered to highway level. This is the case
if a speed of 5mph(8km/h) is reached.
R High-speed level is not available.
These restrictions apply to all accessories
powered through a connectio nto the trailer
power socket of your vehicle, e.g. a bicycle
carrier.
Observe the maximum permissible trailer
dimensions (width and length).
Most U.S. states and all Canadia nprovinces
require by law:
R Safety chains between the towing vehicle
and the trailer. The chains should be cross-
wound under the trailer drawbar. They must be fastened to the vehicle's trailer
coupling, not to the bumper or the axle.
Leave enough play in the chains to make
tight cornering possible.
R As eparate brake system for certain types
of trailer.
R As afety switch for braked trailers. Check
the specific legal requirements applicable
to your state.
If the trailer detaches from the towing
vehicle, the safety switch applies the
trailer's brakes. Towing
atrailer
There are numerous legal requirements
concerning the towing of a trailer, e.g .speed
restrictions. Make sure that your vehicle/
trailer combination complies with the local
requirements not only in your area of
residence but also at any location to which
you are traveling. The police and local
authorities can provide reliable information.
Please observe the following when towing a
trailer:
R To acquaint yourself with driving with a
trailer and with the resulting changes to
handling, you should practice cornering,
stopping and backing up in a traffic-free
location.
R Before driving, check:
-Trailer tow hitch
- Safety switch for braked trailers
- Safety chains
- Electrical connections
- Lights
- the wheels
R Adjust the exterior mirrors to provide an
unobstructed view of the rear section of the
trailer.
R If the trailer features electronically
controlled brakes, pull away the vehicle/
trailer combination carefully, manually Towing
atrailer
257Driving an d parking Z

Displays and operation
Instrument cluster
Instrument cluster: miles
0002
Speedometer with segments (Y page 264)
0003 Fuel gauge
001F Tachometer (Y page 264)
001E Coolant temperature ( Ypage 263)
001C Multifunction display (Y page 265)
001D Instrumen tcluster lighting (Y page 263) Instrument cluster lighting
The lighting in the instrumen tcluster, in the
displays and the controls in the vehicle
interior can be adjusted using the brightness
control knob.
The brightness control knob is located on the
bottom left of the instrument cluster
(Y page 33).
X Turn the brightness control knob clockwise
or counter-clockwise.
If the light switch is set to 0006,0016or
000D, the brightness is dependent upon
the brightness of the ambien tlight.
i The light sensor in the instrumen tcluster
automatically controls the brightness of
the multifunction display. In daylight, the displays in the instrument
cluster are not illuminated. Coolant temperature display
G
WARNING
Driving when your engine is overheated can
cause some fluids which may have leaked into
the engine compartment to catch fire. You
could be seriously burned.
Steam from an overheated engine can cause
serious burns which can occur just by opening
the engine hood. Stay away fro mthe engine
if you see or hear steam coming from it.
Stop the vehicle in a safe location away from
other traffic. Turn off the engine, get out of the Displays and operation
263On-board computer and displays
Z

vehicle and do not stand near the vehicle until
the engine has cooled down.
! Adisplay message is shown if the coolant
temperature is too high.
If the coolant temperature is over
248 ‡(120 †), do not continue driving. The
engine will otherwise be damaged.
The coolan ttemperature gauge is in the
instrument cluster on the right-hand side
(Y page 33).
Under normal operating conditions and with
the specified coolant level, the coolant
temperature may rise to 248 ‡ (120 †). Tachometer
! Do not drive in the overrevving range, as
this could damage the engine.
The red band in the tachometer indicates the
engine's overrevving range.
The fuel supply is interrupted to protec tthe
engine when the red band is reached. Outside temperature display
You should pay special attention to road
conditions when temperatures are around
freezing point.
The outside temperature display is in the
multifunction display (Y page 265).
Changes in the outside temperature are
displayed after a short delay. Speedometer with segments
The segments in the speedometer indicate
which speed range is available.
R Cruise control activated (Y page 192):
The segments light up from the stored
speed to the maximum speed.
R DISTRONIC PLUS activated (Y page 194):One or two segments in the set speed
range light up.
R DISTRONIC PLUS detectsav ehicle in front:
The segments between the speed of the
vehicle in fron tand the stored speed light
up. Operating the on-board computer
Overview 0002
Multifunctio ndisplay
0003 Switches on the Voice Control System;
see the separate operating instructions
001F Right control panel
001E Left control panel
001C Back button
X To activat ethe on-board computer: turn
the SmartKey to position 1in the ignition
lock.
You can control the multifunction display and
the settings in the on-board computer using
the buttons on the multifunction steering
wheel. 264
Displays and operationOn-board computer and displays

X
Press the 0002or0005 button on the
steering wheel to select the Sett. menu.
X Press the 0004or0003 button to select the
Lights submenu.
X Press 000Bto confirm.
X Press 0004or0003 to select the Daytime Running Lights: function.
If the Daytime Running Lights: have
been switched on, the cone of light and the
0004 symbol in the multifunction display
are shown in red.
X Press the 000Bbutton to save the setting.
Further information on daytime running
lamps (Y page 120).
Switching Adaptive Highbeam Assist on/
off
X Press the 0002or0005 button on the
steering wheel to select the Sett. menu.
X Press the 0004or0003 button to select the
Lights submenu.
X Press 000Bto confirm.
X Press the 0004or0003 button to select the
Adaptive Highbeam function.
If the Adaptive Highbeam function has
been switched on, the cone of light and the
0005 symbol in the upper multifunction
display are shown in red.
X Press the 000Bbutton to save the setting.
For further information about Adaptive
Highbeam Assist, see (Y page 126).
Setting the brightness of the ambient
lighting
X Press the 0002or0005 button on the
steering wheel to select the Sett. menu.
X Press the 0004or0003 button to select the
Lights submenu.
X Press 000Bto confirm.
X Press the 0004or0003 button to select the
Amb. Light +/-. function.
You will see the selected setting.
X Press 000Bto confirm. X
Press the 0004or0003 button to adjust the
brightness to any level from Off to
Level 5 (bright).
X Press the 000Bor0007 button to save the
setting.
Setting the ambient lighting color
X Press the 0002or0005 button on the
steering wheel to select the Sett. menu.
X Press the 0004or0003 button to select the
Lights submenu.
X Press 000Bto confirm.
X Press the 0004or0003 button to select the
Ambient Light Color function.
X Press 000Bto confirm.
X Press the 0004or0003 button to set the
color to SOLAR ,
NEUTRAL or
POLAR .
X Press the 000Bor0007 button to save the
setting.
Surround lighting and exterior lighting
delayed switch-off
X Press the 0002or0005 button on the
steering wheel to select the Sett. menu.
X Press the 0004or0003 button to select the
Light submenu.
X Press 000Bto confirm.
X Press 0004or0003 to select the
Surround Lighting function.
When the Surround Lighting function is
activated, the light cone and the area
around the vehicle are displayed in red in
the multifunction display.
X Press the 000Bbutton to save the setting.
Deactivating delayed switch-off of the
exterior lighting temporarily:
X Before leaving the vehicle, turn the
SmartKey to position 0in the ignition lock.
X Turn the SmartKey to position 2in the
ignition lock.
The exterior lighting delayed switch-off is
deactivated. Menus and submenus
275On-board computer and displays Z

Delayed switch-off of the exterior lighting is
reactivated the next time you start the
engine.
If you have activated the
SurroundLighting functio
nand the light switch is set
to 0006, the following functions are activated
when it is dark:
R Surround lighting: the exteriorlighting
remains lit for 40 seconds after unlocking
with the SmartKey. If you start the engine,
the surround lighting is switched off and
the automatic headlamp mode is activated
(Y page 120).
R Exterior lighting delayed switch-off: the
exterior lighting remains lit for
60 seconds after the engine is switched off.
If you close all the doors and the tailgate,
the exterior lighting goes off after
5s econds.
i Depending on your vehicle's equipment,
when the surround lighting and delayed
switch-off exterior lighting are on, the
following light up:
R Parking lamps
R Daytime running lamps
R Side marker lamps
R Surround lighting in the exterior mirrors
Activating/deactivating the interior
lighting delayed switch-off
If you activate the Interior LightingDelay function, the interior lighting remains
on for 20seconds after you remove the
SmartKey from the ignition lock.
X Press the 0002or0005 button on the
steering wheel to select the Sett. menu.
X Press the 0004or0003 button to select the
Lights submenu.
X Press 000Bto confirm.
X Press 0004or0003 to select the
Interior Lighting Delay function.
When the Interior Lighting Delay function is activated, the vehicle interior is displayed in red in the multifunction
display.
X Press the 000Bbutton to save the setting.
Vehicle submenu Activating/deactivating the automatic
door locking mechanism
If you activate the
Automatic Door Lock function, the vehicle is centrally locked above
a speed of around 9 mph (15 km/h).
X Press the 0002or0005 button on the
steering wheel to select the Sett. menu.
X Press 0004or0003 to select the Vehicle submenu.
X Press 000Bto confirm.
X Press 0004or0003 to select the
Automatic Door Lock function.
When the Automatic Door Lock function
is activated, the vehicle doors are displayed
in red in the multifunction display.
X Press the 000Bbutton to save the setting.
For further information on the automatic
locking feature, see (Y page 86).
Activating/deactivating the acoustic
locking verification signal
If you switch on the Acoustic Lock function,
an acoustic signal sounds when you lock the
vehicle.
X Press the 0002or0005 button on the
steering wheel to select the Sett. menu.
X Press 0004or0003 to select the Vehicle submenu.
X Press 000Bto confirm.
X Press the 0004or0003 button to select the
Acoustic Lock function.
If the Acoustic Lock function is activated,
the 000B symbol in the multifunction
display lights up red.
X Press the 000Bbutton to save the setting. 276
Menus and submenusOn-board computer and displays

Activating/deactivating the rada
rsensor
system
X Press the 0002or0005 button on the
steering wheel to selec tthe Sett. menu.
X Press 0004or0003 to select the Vehicle submenu.
X Press 000Bto confirm.
X Press the 0003or0004 button to select
Radar Sensor (See Oper. Manual): .
You will see the selected setting: Enabledor
Disabled .
X Press the 000Bbutton to save the setting.
The following systems are switched off when
the radar sensor system is deactivated:
R DISTRONIC PLUS (Y page 194)
R BAS PLUS (Y page 67)
R PRE-SAFE ®
Brake (Y page 73)
R Blind Spot Assist (Y page 233)
R Active Blind Spot Assist (Y page 237)
Convenience submenu Activating/deactivating the EASY-
ENTRY/EXIT feature
G
WARNING
You must make sure no one can become
trapped or injured by the moving steering
wheel when the easy-entry/exit feature is
activated.
To stop steering wheel movement, move
steering wheel adjustment lever or press one
of the memory position buttons.
Do not leave children unattended in the
vehicle, or with access to an unlocked vehicle.
Children could open the driver's door and
unintentionally activate the easy-entry/exit
feature, which could result in an accident
and/or serious personal injury.
X Press the 0002or0005 button on the
steering wheel to select the Sett. menu.
X Press the 0004or0003 button to select the
Convenience submenu.X
Press 000Bto confirm.
X Press 0004or0003 to select the Easy Entry/Exit function.
If the Easy Entry/Exit function is
activated, the vehicle steering wheel is
displayed in red in the multifunction
display.
X Press the 000Bbutton to save the setting.
Further information on the EASY-ENTRY/EXIT
feature (Y page 112).
Switching the belt adjustment on/off
X Press the 0002or0005 button on the
steering wheel to select the Sett. menu.
X Press the 0004or0003 button to select the
Convenience submenu.
X Press 000Bto confirm.
X Press the 0004or0003 button to select the
Belt Adjustment function.
When the Belt Adjustment function is
activated, the vehicle seat belt is displayed
in red in the multifunction display.
X Press the 000Bbutton to save the setting.
For further information on belt adjustment,
see (Y page 57).
Switching the fold-in mirrors when
locking feature on/off
This function is only available on vehicles with
the memory function (Y page 116).
When you activate the Auto. Mirror Folding function, the exterior mirrors are
folded in when the vehicle is locked. If you
unlock the vehicle and then open a door, the
exterior mirrors fold out again.
X Press the 0002or0005 button on the
steering wheel to select the Sett. menu.
X Press the 0004or0003 button to select the
Convenience submenu.
X Press 000Bto confirm. Menus and submenus
277On-board computer and displays Z

blue. Avoid driving at full engine output during
this time.
SETUP 0002
Drive program (C /S /M )
0003 ESP ®
mode (ON /OFF )
001F Suspension tuning (COMFORT /SPORT /
SPORT+ )
SETUP shows the drive program, the ESP ®
(Electronic Stability Program) mode and the
suspension tuning.
X Press the 0002or0005 button on the
steering wheel to select the AMG menu.
X Press the 0003button repeatedly until
SETUP is displayed.
RACETIMER Displaying and starting RACETIMER
The RACETIMER is only intended for use on a
closed race circuit. Do not use the function
on public roads. 0002
Lap
0003 RACETIMER You can start the RACETIMER when the
engine is running or if the SmartKey is in
position
2in the ignition lock.
X Press 0002or0005 on the steering wheel
to select the AMG menu.
X Press the 0003button repeatedly until the
RACETIMER is shown.
X To start: press the 000Bbutton to start the
RACETIMER.
Displaying the intermediate time X
Press the 0002or0005 button to select
Interm. Time .
X Press 000Bto confirm.
The intermediate time is displayed for five
seconds.
Starting a new lap 0002
RACETIMER
0003 Fastest lap time (best lap)
001F Lap
X Press 000Bto confirm New Lap .
i It is possible to store a maximum of
sixteen laps. The 16th lap can only be
completed with Finish Lap .Menus and submenus
279On-board computer and displays Z