2012 MERCEDES-BENZ G-Class door lock

Problems with the automatic transmission
Problem Possible causes/consequences and
M Solutions
The acceleration ability
is deteriorating.
The transmission no
longer changes gear. The transmission is in emergency mode.
It is only possible to shift into
second
gear and reverse gear.
X Stop the vehicle.
X Shift the transmission to position P.
X Turn the SmartKey to position 0 in the ignition lock.
X Wait at least ten seconds before restarting the engine.
X Shift the transmission to position D or R.
If D
is

selected, the transmission shifts into second gear; if R is
selected, the transmission shifts into reverse gear.
X Have the transmission checked at a qualified specialist
workshop immediately. You hear a warning
tone. You have:
R
switched off the engine
R opened the driver's door
R not moved the selector lever to position P
X Move the selector lever to
P.
Releasing the parking lock manually
In the

event of a malfunction, it is possible to
release the selector lever lock manually to
move it out of position P, e.g. if you wish to
have the vehicle towed. X
Apply the parking brake.
X Insert a suitable implement :
into the
opening protected by the flap. X
Press implement : downwards and
simultaneously move

the selector lever out
of position P.
X Remove implement :.
The selector

lever can now be moved freely
until it is returned to position P.
i The protective

flap only closes completely
if you briefly press to selector lever towards
D-. Refueling
Important safety notes
G
WARNING
Gasoline is highly flammable and poisonous.
It burns violently and can cause serious
personal injury.
Never allow sparks, flames or smoking
materials near gasoline. 124
Refueling
Driving and parking

i
When the engine is running and the fuel
filler flap is open, the yellow reserve fuel
warning lamp and the = (USA only)
or ; (Canada only) Check Engine
warning lamp may light up.
For further information on warning and
indicator lamps in the instrument cluster,
see ( Y page 184).
X Remove the SmartKey from the ignition
lock.
X Press the fuel filler flap in the direction of
arrow :.
The fuel filler flap opens slightly.
X Open the fuel filler flap.
X Turn the fuel filler cap counterclockwise
and remove it.
X Insert the fuel filler cap into the holder
bracket on the inside of filler flap ?.
X Completely insert the fuel pump nozzle into
the filler neck and refuel.
X Only fill the tank until the pump nozzle
switches off.
! Overfilling the
fuel tank could damage the
fuel system.
Closing X
Replace the fuel filler cap and turn it
clockwise. The fuel filler cap audibly
engages.
X Close the fuel filler flap.
i Close the

fuel filler flap before locking the
vehicle. A locking pin otherwise prevents
the fuel filler flap from closing after the
vehicle has been locked. Fuel filler flap emergency release
G
WARNING
Avoid contact with the vehicle walls as they
may contain sharp edges. Otherwise, you
could injure yourself while releasing the fuel
filler flap. The emergency release is located in the cargo
compartment, on the right-hand side when
viewed in the direction of travel, behind the
rear panel trim.
X
Open the rear door. X
Disconnect edge guard : on the door
pillar.
X Remove rear panel trim ;. X
Pull emergency release = in the direction
of the arrow.
The fuel filler flap is unlocked.
X Open the fuel filler flap.126
Refueling
Driving and parking

Problems with the fuel and fuel tank
Problem Possible causes/consequences and
M Solutions
Fuel is leaking from the
vehicle. G
Risk of explosion or fire
The fuel line or the fuel tank is defective.
X Turn the SmartKey to position
0 (Y
page
115) in the ignition lock
immediately and remove it.
X Do not restart the engine under any circumstances.
X Consult a qualified specialist workshop. The fuel filler flap
cannot be opened. The fuel filler flap is not unlocked.
or
The SmartKey batteries are discharged.
X
Unlock the vehicle (
Y page 60).
or
X Unlock the vehicle using the mechanical key ( Y page 61).
X Open the rear door.
X Manually unlock the fuel filler flap using the emergency release
(Y page 126). The fuel filler flap is unlocked, but the opening mechanism is
jammed.
X
Manually unlock the fuel filler flap using the emergency release
(Y page 126).
X Consult a qualified specialist workshop. Parking
Important safety notes
G
WARNING
Do not park this vehicle in areas where
combustible materials

can come into contact
with the hot exhaust system. Do not park the
vehicle on dry grassland or harvested grain
fields. Combustible materials, such as grass,
hay or leaves could be ignited by the hot
exhaust system and cause a vehicle fire. Unintended vehicle movement can cause
serious personal injury or damage to the
vehicle or the vehicle drivetrain. To reduce
such risks, always do the following before
turning
off

the engine and leaving the vehicle:
R keep your right foot on the brake pedal.
R engage the parking brake.
R shift the automatic transmission into park
position P.
R slowly release the brake pedal.
R when parked on an incline, always turn the
front wheels towards the road curb. Parking
127
Driving and parking
Z

For this reason, in the event of heavy rain or
in conditions in which hydroplaning can
occur, you must drive in the following
manner:
R
lower your speed.
R avoid ruts.
R brake carefully.
Driving on flooded roads !
Do not drive through flooded areas.
Check the
depth of any water before driving
through it. Drive slowly through standing
water. Otherwise, water may enter the
vehicle interior or the engine compartment.
This can damage the electronic
components in the engine or the automatic
transmission. Water can also be drawn in
by the engine's air suction nozzles and this
can cause engine damage.
If you have to drive on stretches of road on
which water has collected, please bear in
mind that:
R the maximum permissible still water depth
is 50 cm.
R you should drive no faster than at walking
pace.
Off-road fording :
Fording depth, 20 in (50 cm)
The fording depth must not exceed 20 in
(50 cm)

when the vehicle is loaded and ready
to drive. !
The water depth must not exceed 20 in
(50 cm). Note that the possible fording
depth is less in flowing water.
i You may only drive through freshwater.
R Observe the

safety notes (Y page 134) and
the general notes (Y page 135) on off-road
driving.
R Establish how deep the water is and the
characteristics of the body of water before
fording.
R Switch off the auxiliary heating and the air-
conditioning system.
R Shift the transfer case to
LOW (Y page 145).
R Engage the differential locks, if necessary
(Y page 148).
R Restrict the shift range to 1 or 2
(Y page 121).
R Avoid high engine speeds.
R Enter and exit the water at a flat place and
at a steady walking pace.
! Under no circumstances should you
accelerate before entering the water. The
bow wave could cause water to enter and
damage the engine and other assemblies.
R Drive slowly and at an even speed through
the water.
R Do not stop and do not switch off the
engine.
! Do not open any of the vehicle's doors
while fording. Otherwise, water could get
into the vehicle interior and damage the
vehicle's electronics and interior
equipment.
R Water offers a high degree of resistance,
and the ground is slippery and in some
cases unstable. Therefore, it is difficult and
dangerous to pull away in the water.
R Ensure that a bow wave does not form as
you drive.
R Clean any mud from the tire tread after
fording.
R Apply the brakes to dry them after fording. Driving tips
133
Driving and parking Z

cannot complete the attempted climb, back it
down in reverse gear.
Do not drive along the side of a slope. The
vehicle might

otherwise rollover. If in doing so
the vehicle begins to show a tendency to roll,
immediately steer into a line of gravity
(straight up or downhill).
Never let the vehicle roll backwards in idle.
You may lose control of the vehicle if you use
only the service brake. For information on
driving downhill, see "Driving downhill". G
WARNING
Do not reduce the tire inflation pressure
before driving through sand. However, if you
do so, remember to correct the tire inflation
pressure before continuing your trip. Driving
with reduced

tire inflation pressure increases
the risk of losing control of the vehicle and
rolling over.
General notes Read
this section carefully before driving your
vehicle off-road.

Practice by driving over more
gentle off-road terrain first.
Familiarize yourself with the characteristics
of your vehicle and the gear shift operation
before driving through difficult terrain.
The following driving systems are specially
adapted to off-road driving:
R 4ETS ( Y page 56)
R transfer case (Y page 145)
R differential locks (Y page 148)
Observe the following notes:
R stop your vehicle and, if necessary, shift the
transfer case to LOW (Y page 145) before
driving off-road.
R engage the differential locks, if necessary
(Y page 148).
i ABS, 4ETS, ESP ®
and BAS are deactivated
when the differential locks are activated.
This allows the front wheels to lock briefly,
so that these can dig into a loose surface. However, please note that locked wheels
skid and can no longer steer.
R Check that items of luggage and loads are
stowed safely and are well secured
(Y page 192).
R Make sure

there is always sufficient ground
clearance to prevent damage to the
vehicle.
R Always keep the engine running and in gear
when driving on a downhill gradient.
R Always keep the engine running and in gear
when driving on a slope.
R Drive slowly and evenly, if necessary at a
walking pace.
R Ensure that the wheels are in contact with
the ground at all times.
R Drive with extreme care on unknown off-
road routes where visibility is poor. For
safety reasons, get out of the vehicle first
and survey the off-road route.
R Check the depth of water before fording
rivers and streams.
R When fording, do not stop and do not
switch off the engine.
R Look out for obstacles such as rocks, holes,
tree stumps and furrows.
R Always keep the doors, rear door, side
windows and the sliding sunroof closed
while the vehicle is in motion.
R Switch off cruise control.
R Do not stray from marked routes or paths.
R Adapt your speed to the terrain. The
rougher, steeper or more ruts on the
terrain, the slower your speed should be.
R Drive slowly and at an even speed through
the water. Ensure that a bow wave does not
form as you drive.
R On sand, drive quickly to overcome the
rolling resistance. Otherwise, the vehicle
could dig itself into the sand.
R Do not jump with the vehicle as this will
interrupt the vehicle's propulsion. Driving tips
135
Driving and parking Z

R
the automatic transmission is in selector
lever position N.
R you are driving no faster than 25 mph
(40 km/h).
You could otherwise damage the transfer
case.
X Push the transfer case switch to LOW.
When the shift procedure is complete, the
L transfer case position appears in the
multifunction display.
X Shift the transmission to position D.
From LOW to HIGH
! Only carry out the gear selection if:
R the engine is running.
R the vehicle is rolling.
R the automatic

transmission is in selector
lever position N.
R you are driving no faster than 43 mph
(70 km/h).
You could otherwise damage the transfer
case.
X Push the transfer case switch to HIGH.
When the shift procedure is complete, the
H transfer case position appears in the
multifunction display.
If the gear change is not completed, the
following messages could appear in the
display:
R TC shift conditions not fulfilled
You have not met one or more shift
conditions.
R TC in neutral
The transfer case has canceled the gear
change process and is in N. The N transfer
case position appears in the multifunction
display. G
WARNING
If the transfer case is in Neutral, the park
position P of the automatic transmission will not hold the vehicle. The parking brake must
be engaged to hold the vehicle in place.
R TC shift procedure canceled
The transfer case has not performed the
gear change process.
X Carry out the gear change process again.
Make sure to meet all conditions for
changing gears.
R Transfer case Consult workshop
There is

a malfunction in the transfer case.
X Do not shift the transfer case.
X Have the vehicle checked as soon as
possible at

a qualified specialist workshop.
Shifting to neutral G
WARNING
If the transfer case is in Neutral, the park
position P of the automatic transmission will
not hold the vehicle. The parking brake must
be engaged to hold the vehicle in place.
X Turn the SmartKey to position 2 in the
ignition lock.
X Apply the parking brake.
X Depress the brake pedal.
X Move the selector lever to
position N (Y page 120).
X Push the transfer case switch to LOW for
about 30 seconds.
When the shift procedure is complete, the
N transfer case position appears in the
multifunction display.
i If the transfer case is in N, the SmartKey
is in the ignition lock and you open the
driver's door,

the TC in neutral message
appears in the multifunction display. If you
then release the parking brake, a warning
tone will sound. Off-road driving systems
147
Driving and parking Z

Switching the daytime running lamps on/
off
This function is not available in Canada.
If you have activated the daytime running
lamps function and the light switch is in the
$ or à position, the low-beam
headlamps are switched on automatically
when the engine is running.
In the dark, the following also light up:
R
the low-beam headlamps
R the standing lamps
R the tail lamps
R the license plate lamp
R the side marker lamp
In countries
where daytime running lamps are
legally required, Constant is the factory
setting.
X Press the V or U button on the
steering wheel to select the Settings
menu.
X Press the & button

to select submenus.
X Press the W or X
button to select the
Lighting submenu.
X Press the & button
to select Headlamp
mode.
X Press the W or X button to set the
mode for the headlamps to Manual or
Constant (daytime running lamps).
X Press the &, V or U button to
select a different display.
Switching the surround lighting on or off
If you activate the surround lighting function
and the light switch is set to Ã, the
following will light up if it is dark and you
unlock the vehicle using the SmartKey:
R the standing lamps
R the license plate lamp
R the tail lamps
R the fog lamps
R the side marker lamp The surround lighting switches off
automatically after 40 seconds or when the
driver's door is opened.
X
Press the V or U button on the
steering wheel to select the Settings
menu.
X Press the & button
to select submenus.
X Press the W or X
button to select the
Lighting submenu.
X Press the & button
to select Surround
lighting.
X Press the W or X button to switch
the Surround lighting on or off.
X When leaving the vehicle, turn the light
switch to position Ã.
The surround lighting is activated.
X Press the &, V or U button to
select a different display.
Activating/deactivating the exterior
lighting delayed switch-off
If you have activated the delayed switch-off
function, the light switch is set to à and
you switch off the engine, the following
remain lit:
R the standing lamps
R the license plate lamp
R the tail lamps
R the fog lamps
R the side marker lamp
If the

engine is switched off and then none of
the doors are opened, or if an open door is
not closed, the exterior lighting goes out after
60 seconds.
X Press the V or U button on the
steering wheel to select the Settings
menu.
X Press the & button
to select submenus.
X Press the W or X
button to select the
Lighting submenu.
X Press the & button to select Headl.
Delayed Switch Off. 160
Menus and submenus
On-board computer and displays

X
Press the W or X button to activate
or deactivate the Headl. Delayed
Switch Off function.
X Before switching off the engine, turn the
light switch to position Ã.
The exterior lighting delayed switch-off is
activated.
X Press the &, V or U button to
select a different display.
Deactivating the delayed switch-off
temporarily:
X Before leaving the vehicle, turn the
SmartKey to
position 0 in the ignition lock.
X Turn the SmartKey to position 2 in the
ignition lock and back to position 0.
The delayed switch-off is deactivated.
Delayed switch-off is reactivated the next
time you start the engine.
Activating/deactivating the interior
lighting delayed switch-off
If the Interior Light. Delay. Sw. Off:
function is activated and you pull the
SmartKey out

of the ignition lock, the interior
lighting remains on for around 10 seconds.
X Press the V or U button on the
steering wheel to select the Settings
menu.
X Press the & button
to select submenus.
X Press the W or X
button to select the
Lighting submenu.
X Press the & button
to select Interior
Light. Delay Sw. Off.
X Press the W or X button to activate
or deactivate Interior Light. Delay.
Sw. Off.
X Press the &, V or U button to
select a different display. Vehicle Activating/deactivating the automatic
door locking feature
If you select the Automatic Locking
function,
the

vehicle is centrally locked above
a speed of around 9 mph (15 km/h).
i For more information on the automatic
locking feature, see ( Y page 66).
X Press the V or U button on the
steering wheel to select the Settings
menu.
X Press the & button
to select submenus.
X Press the W or X
button to select the
Vehicle submenu.
X Press the & button to select
Automatic Door Lock.
X Press the W or X button to switch
the Automatic Door Lock feature on or
off.
X Press the &, V or U button to
select a different display.
Convenience Activating/deactivating the EASY-
ENTRY/EXIT feature
You can use the
Easy-entry Function to
activate or deactivate the EASY-ENTRY/EXIT
feature ( Y page 83). 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 do one of
the following:
R Move steering wheel adjustment stalk.
R Press one

of the memory position buttons.
R Press the memory button.
Do not leave children unattended in the
vehicle, or with access to an unlocked vehicle.
Children could open the driver's door and Menus and submenus
161
On-board computer and displays
Z