2011 MERCEDES-BENZ G-CLASS key

Problems with the fuel and fuel tankProblemPossible causes/consequences and M SolutionsFuel is leaking from the
vehicle.GRisk of explosion or fire
The fuel line or the fuel tank is defective.
XTurn the key to position 0 (Y page 117) in the ignition lock
immediately and remove it.XDo not restart the engine under any circumstances.XConsult a qualified specialist workshop.The fuel filler flap
cannot be opened.The fuel filler flap is not unlocked.
or
The key batteries are discharged.XUnlock the vehicle ( Y page 62).
or
XUnlock the vehicle using the mechanical key ( Y page 63).XOpen the rear door.XManually unlock the fuel filler flap using the emergency release
( Y page 133).The fuel filler flap is unlocked, but the opening mechanism is
jammed.XManually unlock the fuel filler flap using the emergency release
( Y page 133).XConsult a qualified specialist workshop.Parking
Important safety notes
GWarning
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.134ParkingDriving and parking
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Rturn the SmartKey in the ignition lock to
position 0 and remove the SmartKey from
the ignition lock.
R take the SmartKey with you and lock the
vehicle when leaving.
Switching off the engine
GWarning
Do not turn off the engine before the vehicle
has come to a complete stop. With the engine
not running, there is no power assistance for
the brake and steering systems. In this case,
it is important to keep in mind that a
considerably higher degree of effort is
necessary to brake and steer the vehicle.
GWarning!
Keep in mind that turning off the engine alone
only will shift AUTOTRONIC into neutral
position N automatically.
Always shift AUTOTRONIC into park position
P before turning off the engine.
Otherwise the vehicle could roll away which
could result in an accident and/or serious
personal injury.
XShift the transmission to position P.XTurn the SmartKey to position 0 in the
ignition lock and remove it.
The immobilizer is activated.XApply the parking brake firmly.
i The SmartKey can only be removed if the
automatic transmission is in position P.
Parking brake
GWarning
Engaging the parking brake while the vehicle
is in motion can cause the rear wheels to lock
up. You could lose control of the vehicle and
cause an accident. In addition, the vehicle's
brake lights do not light up when the parking
brake is engaged.
GWarning!
When leaving the vehicle, always remove the
SmartKey from the starter switch, take it with
you, and lock the vehicle. Do not leave
children unattended in the vehicle, or with
access to an unlocked vehicle. Children could
release the parking brake and/or shift the
automatic transmission out of park position
P , either of which could result in an accident
and/or serious personal injury.
XTo apply: pull parking brake ; up firmly.
When the engine is running, the $ (USA
only) or J (Canada only) indicator lamp
lights up in the instrument cluster.XTo release: depress the brake pedal and
keep it depressed.
The selector lever lock is released.XPull parking brake ; up firmly.XPress release button : on parking
brake ; and move the parking brake down
to the stop.
When the ignition is switched on or the
engine is running, the $ (USA only) or
J (Canada only) indicator lamp goes out
in the instrument cluster.
Parking up the vehicle
If you leave the vehicle parked up for longer
than four weeks, the battery may be damaged
by exhaustive discharge.
Parking135Driving and parkingZProCarManuals.com

Wet road surfaceGWarning
After driving in heavy rain for some time
without applying the brakes or through water
deep enough to wet brake components, the
first braking action may be somewhat
reduced. You have to depress the brake pedal
more firmly. Maintain a safe distance from
vehicles in front.
After driving on a wet road or having the
vehicle washed, brake firmly while paying
attention to the traffic conditions. This will
warm up the brake discs, thereby drying them
more quickly and protecting them against
corrosion.
GWarning
Make sure that you do not endanger other
road users when you apply the brakes.
Limited braking performance on salt
treated roads
GWarning
The layer of salt on the brake discs and the
brake pads/linings may cause a delay in the
braking effect, resulting in a significantly
longer braking distance, which could lead to
an accident.
To avoid this danger, you should:
R occasionally brake carefully, without
putting other road users at risk, when you
are driving on salted roads. This helps to
remove any salt that may have started to
build up on the brake discs and the brake
pads/linings.
R maintain a greater distance to the vehicle
ahead and drive with particular care.
R carefully apply the brakes at the end of a
trip and immediately after commencing a
new trip, so that salt residues are removed
from the brake discs.
Brake maintenance
! If the brake warning lamp lights up in the
instrument cluster and you hear a warning
tone, even though the parking brake has
been released, the brake fluid level may be
too low. Observe additional warning
messages in the multifunction display.
The brake fluid level may be too low due to
brake pad wear or leaking brake lines.
Have the brake system checked
immediately. This work should be carried
out at an authorized Mercedes-Benz
Center.
All checks and maintenance work on the
brake system must be carried out at a
qualified specialist workshop only. Consult an
authorized Mercedes-Benz Center for this
purpose.
Have the brake pads and the brake fluid
replaced at a qualified specialist workshop,
e.g. an authorized Mercedes-Benz Center.
GWarning
If other than recommended brake pads are
installed, or other than recommended brake
fluid is used, the braking properties of the
vehicle can be degraded to an extent that safe
braking is substantially impaired. This could
result in an accident.
! A function or performance test may only
be carried out on a two-axle dynamometer.
If you are planning to have the vehicle
tested on such a dynamometer, contact an
authorized Mercedes-Benz Center to
obtain further information first. Otherwise,
the drive train or the brake system may
suffer damage.
! As the ESP ®
system operates
automatically, the engine and the ignition
must be switched off (the key must be in
position 0 or 1 in the ignition lock) if the
parking brake is tested on a brake
dynamometer (for a maximum of ten
seconds).
138Driving tipsDriving and parking
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4MATIC (permanent all-wheel drive)
4MATIC ensures that all four wheels are
permanently driven. Together with ESP ®
and
4ETS , it improves the traction of your vehicle
whenever a drive wheel spins due to
insufficient grip.GWarning!
If a drive wheel is spinning due to insufficient
traction:
R While driving off, apply as little throttle as
possible.
R While driving, ease up on the accelerator
pedal.
R Adapt your speed and driving style to the
prevailing road conditions.
Failure to observe these guidelines could
cause the vehicle to skid.
The 4MATIC cannot prevent accidents
resulting from excessive speed.
! 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.
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.
! When testing the parking brake, operate
the vehicle only briefly (for a maximum of
ten seconds) on a brake test dynamometer.
When doing this, turn the key to position
0 or 1 in the ignition. Failure to do this can
cause damage to the drive train or the
brake system.
! Function or performance tests may only
be performed on a 2-axle dynamometer. If
you wish to operate the vehicle on such a
dynamometer, please consult an
authorized Mercedes-Benz Center
beforehand. You could otherwise damage
the drive train or the brake system.
For information about driving off-road, see
( Y page 142).
Ultrasonic reversing aid
Important safety notes
GWarning!
Make sure no persons or animals are in or
near the area in which you are parking/
maneuvering. Otherwise, they could be
injured.
GWarning
Rear Parking Assist is a supplemental system.
It is not intended to, nor does it replace, the
need for extreme care. The responsibility
during parking and other critical maneuvers
always remains with the driver.
The ultrasonic backing up aid is an electronic
parking aid. It indicates visually and audibly
the distance between the rear area of your
vehicle and an object.
The ultrasonic backing up aid is activated
automatically when you switch on the ignition
and engage reverse gear.
The ultrasonic backing up aid monitors the
rear area of your vehicle using four sensors in
the rear bumper.
:Sensors in the rear bumperDriving systems149Driving and parkingZProCarManuals.com

The rear view camera does not relieve you of
the responsibility to be cautious. Take care
and pay careful attention. The rear view
camera may not show objects which are
R very close to the rear bumper
R under the rear bumper
R under the spare wheel
R nearby behind the spare wheel
You are responsible for safety at all times and
must continue to pay attention to the
immediate surroundings when parking and
maneuvering. This includes the area behind,
in front of, and beside the vehicle. Otherwise
you could endanger yourself and/or others.GWarning!
The rear view camera either will not function
or will not function to its full capability if
R the tailgate is open
R it is raining very hard, snowing or foggy
R it is night or you are parking/maneuvering
your vehicle in an area where it is very dark
R the camera is exposed to a very bright white
light
R the immediate surroundings are
illuminated with fluorescent light (the
display may flicker)
R there is a sudden change in temperature,
e.g. if you drive into a heated garage from
the cold (lens condensation)
R the camera lens is dirty or covered
R the rear of your vehicle is damaged
In this case, have the position and setting
of the camera checked by a qualified
specialist workshop. Mercedes-Benz
recommends that you contact a Mercedes-
Benz Center for this purpose.
Do not use the rear view camera in these
situations. Otherwise you could injure
yourself or others and/or damage property
including your vehicle while parking/
maneuvering.
Activating the rear view cameraXMake sure that the SmartKey is in
position 2 in the ignition lock.XMake sure that the "rear view camera"
function is selected in COMAND (see the
separate operating instructions for
COMAND).XEngage reverse gear.
The area behind the vehicle is shown in the
COMAND display.Driving systems153Driving and parkingZProCarManuals.com

The coolant temperature gauge is in the
instrument cluster on the left-hand side.
Under normal driving conditions, with the
correct anti-corrosion and antifreeze additive
concentration, the reading may rise to
248 ‡(120 †).
! If the coolant temperature exceeds
248 ‡(120 †) do not continue driving. The
engine will otherwise be damaged.
Outside temperature display
The outside temperature display is in the
multifunction display ( Y page 158).
GWarning!
The outside temperature indicator is not
designed to serve as an ice-warning device
and is therefore unsuitable for that purpose.
Indicated temperatures just above the
freezing point do not guarantee that the road
surface is free of ice. The road may still be icy,
especially in wooded areas or on bridges.
Changes in the outside temperature are
displayed after a short delay.
Operating the on-board computer
The on-board computer is activated as soon
as you turn the SmartKey to position 1 in 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.
:Multifunction display;WX
Selects submenus in the Settings
menu
Changes values
Adjusts the volume=~
Rejects or ends a call
Exits phone book/redial memory
6
Makes or accepts a call
Switches to the redial memory?VU
Selects a menu: scrolls back and
forthDisplays and operation157On-board computer and displaysZProCarManuals.com

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.XPress the V or U button on the
steering wheel to select the Settings
menu.XPress the & button to select submenus.XPress the W or X button to select the
Lighting submenu.XPress the & button to select Headlamp
mode .XPress the W or X button to set the
mode for the headlamps to Manual or
Constant (daytime running lamps).XPress 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 key:
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.XPress the V or U button on the
steering wheel to select the Settings
menu.XPress the & button to select submenus.XPress the W or X button to select the
Lighting submenu.XPress the & button to select Surround
lighting .XPress the W or X button to switch
the Surround lighting on or off.XWhen leaving the vehicle, turn the light
switch to position Ã.
The surround lighting is activated.XPress 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.
XPress the V or U button on the
steering wheel to select the Settings
menu.XPress the & button to select submenus.XPress the W or X button to select the
Lighting submenu.XPress the & button to select Headl.
Delayed Switch Off .164Menus and submenusOn-board computer and displays
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XPress the W or X button to activate
or deactivate the Headl. Delayed
Switch Off function.XBefore switching off the engine, turn the
light switch to position Ã.
The exterior lighting delayed switch-off is
activated.XPress the &, V or U button to
select a different display.
Deactivating the delayed switch-off
temporarily:
XBefore leaving the vehicle, turn the key to
position 0 in the ignition lock.XTurn the key 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 key out
of the ignition lock, the interior lighting
remains on for around 10 seconds.
XPress the V or U button on the
steering wheel to select the Settings
menu.XPress the & button to select submenus.XPress the W or X button to select the
Lighting submenu.XPress the & button to select Interior
Light. Delay Sw. Off .XPress the W or X button to activate
or deactivate Interior Light. Delay.
Sw. Off .XPress 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 68).
XPress the V or U button on the
steering wheel to select the Settings
menu.XPress the & button to select submenus.XPress the W or X button to select the
Vehicle submenu.XPress the & button to select
Automatic Door Lock .XPress the W or X button to switch
the Automatic Door Lock feature on or
off.XPress 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 84).
GWarning!
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 submenus165On-board computer and displaysZProCarManuals.com