2012 MERCEDES-BENZ G-Class Owner's Manual

arrow until battery tray cover
: opens. Do
not hold the cover closed while doing so. X
Remove the cover of the battery tray.
X Repeatedly tap the SmartKey against your
palm until battery = falls out.
X Insert the new battery with the positive
terminal facing upwards. Use a lint-free
cloth to do so.
X Insert the front tabs of the battery tray's
cover first, and then press to close it.
X Check the function of all SmartKey buttons
on the vehicle. SmartKey
63
Opening/closing Z

Problems with the SmartKey
Problem Possible causes/consequences and
M Solutions
You cannot lock or
unlock the vehicle
using the SmartKey. The SmartKey battery is discharged or nearly discharged.
X
Point the tip of the SmartKey at the driver's door handle from a
distance of approximately 1.5 ft (50 cm) and try to unlock or
lock the vehicle again.
If this does not work:
X Check the SmartKey battery and replace it if necessary
(Y page 62).
X Lock or unlock the vehicle using the mechanical key
(Y page 66). The SmartKey is faulty.
X
Lock or unlock the vehicle using the mechanical key
( Y page 66).
X Have the SmartKey checked at a qualified specialist workshop. You have lost a
SmartKey. X
Have the SmartKey canceled at an authorized Mercedes-Benz
Center.
X Report the loss immediately to the vehicle insurers.
X If necessary, have the locks changed as well. You have lost the
mechanical key. X
Report the loss immediately to the vehicle insurers.
X If necessary, have the locks changed as well. The SmartKey cannot
be
turned

in the ignition
lock. The SmartKey has been in position
0
for a considerable time.
X Remove the SmartKey and reinsert it into the ignition lock.
X Check the battery and charge it if necessary ( Y page 231).
X Start the engine. The on-board voltage is too low.
X
Switch off non-essential consumers, e.g. seat heating or interior
lighting, and try to turn the SmartKey again.
If this does not work:
X Check the battery and charge it if necessary ( Y page 231).
or
X Jump-start the vehicle (Y page 233).
or
X Consult a qualified specialist workshop.64
SmartKey
Opening/closing

Doors
Important safety notes
G
WARNING
When leaving the vehicle, always remove the
SmartKey from the ignition lock. Always take
the SmartKey with you and lock the vehicle.
Do not leave children unsupervised in the
vehicle, even if they are secured in a child
restraint system,
and do not give them access
to an unlocked vehicle. A child's unsupervised
access to a vehicle could result in an accident
and/or serious personal injury. They could:
R injure themselves on vehicle parts
R be seriously or fatally injured by extreme
heat or cold
R injure themselves or have an accident with
vehicle equipment that may still be in
operation even after the SmartKey has
been removed from the ignition, such as the
seat adjustment, steering wheel
adjustment or memory function.
If children open a door, they could cause
severe or even fatal injury to other persons; if
they get out of the vehicle, they could injure
themselves when doing so or be seriously or
even fatally injured by any passing traffic.
Do not expose the child restraint system to
direct sunlight. The child restraint system's
metal parts, for example, could become very
hot, and a child could be burned on these
parts. G
WARNING
Do not carry heavy or hard objects in the
passenger compartment or cargo
compartment unless they are firmly secured
in place.
Unsecured or improperly positioned cargo
increases a child's risk of injury in the event
of
R strong braking maneuvers
R sudden changes of direction
R an accident Unlocking and opening doors from
inside
You can

open a door anytime from inside the
vehicle even if it has been locked, unless the
child-proof locks (Y page 52) have been
activated.
If the vehicle has previously been locked with
the SmartKey, opening a door from the inside
will trigger the anti-theft alarm system.
Switch off the alarm (Y page 57). X
Front doors:
pull door handle
;.
If the

door is locked, locking knob : pops
up. The door is unlocked and can be
opened.
X Rear doors: pull

locking knob : upwards.
The door is unlocked.
X Pull door handle ;. Centrally locking and unlocking the
vehicle from the inside
You can centrally lock or unlock the vehicle
from the

inside. This feature may be useful if,
for example, you wish to unlock the front-
passenger door from the inside or lock the
vehicle before you pull away.
The central locking button does not lock or
unlock the fuel filler flap.
i You cannot unlock the vehicle centrally
from the inside if the vehicle has been
locked from the outside using the
SmartKey. Doors
65
Opening/closing Z

i
It is only possible to lock the vehicle
centrally if all doors are closed. X
To unlock: press button :.
X To lock: press button ;.
You can open a front door from inside the
vehicle even if it has been locked. Only open
the door when the traffic situation permits.
If the
vehicle has been locked with the central
locking button:
R and the SmartKey is restored to the factory
settings, the entire vehicle is unlocked if a
front door is opened from inside the
vehicle.
R and the SmartKey is set to an individual
setting, only the front door that is opened
from inside the vehicle is unlocked.
If the vehicle has been locked centrally with
the SmartKey, it does not unlock if you use
the central locking button. Automatic locking feature
The vehicle locks automatically when the
ignition is switched on and the wheels of the
vehicle are moving at a speed of more than
9 mph

(15 km/h). There is therefore a risk of
being locked out when the vehicle is being
pushed, towed or tested on a dynamometer.
You can switch the automatic locking
function on and off using the on-board
computer (Y page 161). Unlocking the driver's door
(mechanical key)
If the vehicle can no longer be unlocked
centrally with the SmartKey:
X Take the mechanical key out of the
SmartKey (Y page 61). X
Insert the mechanical key into the lock of
the driver's door as far as it will go.
X Turn mechanical key ; counter-clockwise
to position
1.
The door is unlocked.
X Turn mechanical key ; back and remove
it. Locking the vehicle
If the vehicle can no longer be locked
centrally with the SmartKey:
X Close the front-passenger door, the rear
doors and the tailgate.
X Press the locking button (Y page 65).
X Make sure that the locking knobs on the
doors are still visible. Press down the
locking knobs by hand, if necessary.
X Close the driver's door from the outside.66
Doors
Opening/closing

X
Take mechanical key ; out of the
SmartKey (Y page 61).
X Insert mechanical key ; into the lock of
the driver's door as far as it will go.
X Turn mechanical key ; clockwise
as far as
it will go to position 1.
X Turn the mechanical key back and remove
it.
X Make sure that the doors and the tailgate
are locked.
i If you

lock the vehicle as described above,
the fuel filler flap is not locked. The anti-
theft alarm system is not armed. Cargo compartment
Important safety notes
Do not leave the SmartKey in the cargo
compartment. Otherwise, you could lock
yourself out. G
WARNING
When leaving the vehicle, always remove the
SmartKey from the ignition lock. Always take
the SmartKey with you and lock the vehicle.
Do not leave children unsupervised in the
vehicle, even if they are secured in a child
restraint system,

and do not give them access
to an unlocked vehicle. A child's unsupervised
access to a vehicle could result in an accident
and/or serious personal injury. They could:
R injure themselves on vehicle parts
R be seriously or fatally injured by extreme
heat or cold
R injure themselves or have an accident with
vehicle equipment that may still be in
operation even after the SmartKey has
been removed from the ignition, such as the
seat adjustment, steering wheel
adjustment or memory function.
If children open a door, they could cause
severe or even fatal injury to other persons; if
they get out of the vehicle, they could injure
themselves when doing so or be seriously or
even fatally injured by any passing traffic.
Do not expose the child restraint system to
direct sunlight. The child restraint system's
metal parts, for example, could become very
hot, and a child could be burned on these
parts. G
WARNING
Do not carry heavy or hard objects in the
passenger compartment or cargo
compartment unless they are firmly secured
in place.
Unsecured or improperly positioned cargo
increases a child's risk of injury in the event
of
R strong braking maneuvers
R sudden changes of direction
R an accident Cargo compartment
67
Opening/closing Z

G
WARNING
The tailgate swings open to one side. Always
make sure
there is sufficient clearance for the
tailgate.
Make sure the tailgate is closed when the
engine is running and while driving. Among
other dangers, deadly carbon monoxide (CO)
gases may enter vehicle interior resulting in
unconsciousness and death.
! The tailgate swings out to the side when
opened. Therefore, make sure that there is
sufficient clearance. Opening
You can only open the rear door after
unlocking it first.
X Press the
% button on the SmartKey.
X
Press release button : and pull door
handle ;.
X Open the rear door. Closing
G
WARNING
To prevent possible personal injury, always
keep hands and fingers away from the cargo
compartment opening when closing the
tailgate. Be especially careful when small
children are around. Side windows
Important safety notes
G
WARNING
When closing the door windows, make sure
there is

no danger of anyone being harmed by
the closing procedure.
Activate the override switch when children
are riding in the back seats of the vehicle. The
children may otherwise injure themselves,
e.g. by becoming trapped in the window
opening.
The closing of the door windows can be
immediately halted by releasing the switch or
by releasing button & on the SmartKey. G
WARNING
Do
not keep any part of your body up against
the window

pane when opening a window. The
downward motion of the pane may pull that
part of your body down between the window
pane and the door frame and trap it there. If
there is a risk of entrapment, release the
switch and pull it to close the window. Opening and closing the side
windows
:
Override feature for rear door windows
; Front left
= Front right
? Rear right
A Rear left68
Side windows
Opening/closing

The switches for all side windows are located
on
the
driver's door. There is also a switch on
each door for the corresponding side window.
i The side windows cannot be operated
from the rear when the override feature for
the side windows is activated.
X Turn the SmartKey to position 1 or 2
in the
ignition lock.
X To open: press the corresponding switch.
X To close: pull the corresponding switch.
i If you press the switch beyond the point
of resistance while opening, an automatic
opening/closing process is started. You
can stop

automatic operation by operating
the switch again. Convenience opening feature
You can

ventilate the vehicle before you start
driving. To do this, you can use the SmartKey
to simultaneously:
R unlock the vehicle
R open the side windows
R open the sliding sunroof
i The convenience opening feature can
only be operated using the SmartKey. The
SmartKey must be close to the driver's
door handle.
X Point the tip of the SmartKey at the driver's
door handle.
X Press and hold the % button until the
side windows

and the sliding sunroof are in
the desired position. Convenience closing
When you lock the vehicle, you can
simultaneously:
R close the side windows
R close the sliding sunroof G
WARNING
When closing the windows and the tilt/sliding
sunroof, make sure there is no danger of
anyone being harmed by the closing
procedure.
If potential

danger exists, proceed as follows:
R Release button & to stop the closing
procedure. To open, press and hold button
%. To continue the closing procedure
after making sure that there is no danger of
anyone being harmed by the closing
procedure, press and hold button &.
i The SmartKey must be close to the
driver's door handle.
X Point the tip of the SmartKey at the driver's
door handle.
X Press and hold the & button until the
side windows and the sliding sunroof are
fully closed.
X Make sure that all the side windows and the
sliding sunroof are closed.
X To interrupt convenience closing:
release the & button. Problems with the side windows
Problem: a

side window cannot be closed
because objects are trapped between the
side window and the door frame.
X Remove the objects.
X Close the side window.
Problem: a side window cannot be closed
because objects in the guide rail are
preventing the

window from being raised.
X Remove the objects.
X Close the side window. Side windows
69
Opening/closing Z

Sliding sunroof
Important safety notes
G
WARNING
Children could injure themselves if they
operate the sliding sunroof.
Do not leave children unsupervised in the
vehicle. Always take the SmartKey with you
when leaving
the vehicle, even if you are only
leaving it for a short time. G
WARNING
When closing the sliding sunroof, make sure
that there is no danger of anyone being
harmed by the closing procedure.
The opening procedure of the sliding sunroof
can be immediately halted by releasing the
sunroof switch or, if the sunroof switch was
moved past

the resistance point and released,
by moving the sunroof switch in any direction.
The closing procedure of the sliding sunroof
can be immediately halted by releasing the
sliding sunroof switch. The closing procedure
of the sliding sunroof can be immediately
reversed by moving the sliding sunroof switch
toward : or ?.
If you are not wearing a seat belt, or are not
wearing it correctly, there is a risk that you
could be thrown through the opening in the
event of the vehicle overturning. An opening
of this kind poses a risk of injury even to
passengers who are wearing their seat belts
correctly, as parts of the body could protrude
from the vehicle interior.
! Only open the sliding sunroof if it is free
of snow and ice. Otherwise, malfunctions
may occur.
Do not allow anything to protrude from the
sliding sunroof. Otherwise, the seals could
be damaged.
! If the sliding sunroof still cannot be
opened or closed as a result of a
malfunction, contact a qualified specialist
workshop. !
The weather

can change abruptly. It could
start to rain or snow. Make sure that the
sliding sunroof is closed when you leave the
vehicle. The vehicle electronics can be
damaged if water enters the vehicle
interior.
i Resonance noises can occur in addition
to the usual airflow noises when the sliding
sunroof is open. They are caused by minor
pressure fluctuations in the vehicle interior.
Change the position of the sliding sunroof
or open a side window slightly to reduce or
eliminate these noises. Opening and closing the sliding
sunroof
Overhead control panel
:
To raise
; To lower
= To close
? To open
X Turn
the SmartKey to position
1 or
2
in the
ignition lock.
X Press or pull the 2 switch in the
corresponding direction.
i If you press the 2 switch beyond the
point of resistance while opening, an
automatic opening process is started. You
can stop

automatic operation by operating
the switch again. 70
Sliding sunroof
Opening/closing