engine MERCEDES-BENZ G-CLASS SUV 2012 Owners Manual

Stowage compartment/telephone com-
partment under the armrest/in the centre
console
:
Small stowage compartment
; Release button for the armrest
Stowage compartment/telephone compart-
ment under the armrest
X To open: press button ;.
X Fold up armrest.
i In the stowage compartment, there is a
stowage tray and a mobile phone bracket.
X To close: fold the armrest down.
The armrest engages audibly.
Rear stowage compartments Map pockets
:
Map pockets Stowage nets
G
WARNING
Only place lightweight items in the stowage
net. Do not use it to transport heavy, bulky,
sharp-edged or fragile objects. In the event of
an accident, the stowage net will not secure
the transported goods sufficiently.
The stowage net is in the front-passenger
footwell. Enlarging the luggage compartment
Important safety notes G
WARNING
Do not carry heavy or hard objects inside the
vehicle or in the luggage compartmen tunless
they are secured.
Otherwise, you and othe rvehicle occupants
could be injured by objects being thrown
around the vehicle in the event of sharp brak-
ing, a sudden change in direction or an acci-
dent.
When using the luggage compartment
enlargement, you should alway sclip in the
safety net, if at hand. G
WARNING
Keep the boot lid/tailgate closed when the
engine is running. Otherwise, you could be
poisoned by exhaust fumes entering the vehi-
cle.
! Make sure that you remove any contain-
ers fro mthe rear-compartment cup holders
before folding forward the backrests and
seat cushions of the rear bench seat.
G-Class Cabriolet: the rear bench seat is
split symmetrically.
G-Class long-wheelbase version: the rear
bench seat is split asymmetrically. 268
Stowage areasStowing and features

Stowage compartment/ashtray
Stowage compartment/ashtray in the
centre console G
WARNING
Make sure that the engine has been switched
off and that the parking brake is applied so
that the vehicle cannot pull away unintention-
ally. :
Cover
; Insert
i On new vehicles, insert ;is stored in the
glove compartment. Fit the insert before
using the ashtray.
X To open: press cover :and then release
it.
The ashtray opens.
X To remove the insert: make sure that the
engine is switched off and that the parking
brake has been applied to secure the vehi-
cle against rolling away.
X Move the selector lever to N.
X Press down cover :.
Insert ;is released.
X Pull insert ;upwards and remove it.
X To fit the insert: fit insert;from above.
X Push insert ;down.
Insert ;audibly engages.
X To close: close cover :fully.
i The ashtray is lit up if the dipped-beam
headlamps are on. Ashtray in the rear compartment (G-
Class long-wheelbase version)
X
To open: fold cover ;out in the direction
of the arrow.
X To remove the insert: press retaining
lug :and pull insert =upwards and out.
X To fit the insert: fit insert=from above.
X To close: close cover ;fully. Cigarette lighter
G
WARNING
Only hold the hot cigarette lighter by its knob.
Otherwise, you might burn yourself.
Make sure that children travelling in the vehi-
cle are not able to injure themselves on the
hot cigarette lighter or cause a fire with it. X
Press in cigarette lighter :.
Cigarette lighter :will pop out automati-
cally when the heating element is red-hot. Features
277Stowing and features Z

i
You can use the cigarette lighter socket
for accessories up to 180 W
(Y page 278). 12
Vsockets
General notes !
If you are simultaneously using all three
sockets in the vehicle, make sure that you
do not exceed the maximum current draw
of 45 A. Otherwise, you will overload the
fuses.
The sockets can be used for accessories with
am aximum current draw of 180 W(15 A), e.g.
lamps or chargers for mobile phones.
If you use the sockets for long periods when
the engine is switched off, the battery may
discharge.
X Turn the key to position 2in the ignition
lock.
Socket in the front-passenge rfootwell X
Fold out the flap on th esocket.
i The cigarette lighter socket can be also
used (Y page 277). It can also be used if the
key has been removed from the ignition
lock. Socket in the rear compartment The socket is located on the centre console
in the rear compartment.
X
Fold out the flap on the socket.
Load compartment power socket (G-
Class long-wheelbase version) The socket is located in the luggage compart-
ment on the left-hand-side when viewed in the
direction of travel, next to the rear door.
X Fold out the flap on the socket. Mobile phone
Important safety notes G
WARNING
Observe the legal requirements of the country
in which you are currently driving regarding
operating mobile communications equipment
in a vehicle.
If it is permitted by law to operate communi-
cations equipment while the vehicle is in 278
FeaturesStowing and features

Useful information
............................290
Engine compartment ........................290
Service ............................................... 294
Care .................................................... 295 289Maintenance and care

Useful information
i This Owner's Manual describes all mod-
els, series and optional equipment for your
vehicle that were available at the time of
going to press. Country-specific differen-
ces are possible. Note that your vehicle
may not be fitted with all features descri-
bed. This is also the case for systems and
functions relevant to safety.
i Read the information on qualified special-
ist workshops: (Y page 22). Engine compartment
Bonnet
Important safety notes G
WARNING
Do not pull the release lever while the vehicle
is in motion. If you do so, the bonnet may open
up and block your view. G
WARNING
There is a risk of injury if the bonnet is open,
even if the engine is not running.
Some engine components can become very
hot.
To avoid the risk of burns, only touch those
components described in the Owner's Manual
and observe the relevan tsafety notes. G
WARNING
The radiator fan between the radiator and the
engine can start automatically, even if the key
has been removed from th eignition lock. For
this reason, you must not reach into the fan
rotation area. You could otherwise be injured. Vehicles with
apetrol engine: The elec-
tronic ignitio nsystem uses high voltage. For
this reason, you mus tnever touch ignition
system components (ignition coil, ignition
cables, spark plug connectors or test socket)
while:
R the engine is running
R the engine is being started
R the ignition is switched on and the engine
is being cranked by hand
You could otherwise suffer an electric shock
and be seriously or even fatally injured.
Vehicles with adiesel engine: The elec-
tronic injection control uses high voltage. For
this reason, you must never touch injection
system components while:
R the engine is running
R the engine is being started
R the ignition is switched on
You could otherwise suffer an electric shock
and be seriously or even fatally injured. G
WARNING
The windscreen wipers and wiper linkage
could be set in motion.
When the bonnet is open, you or others could
be injured by the wiper linkage.
Make sure that the windscreen wipers are
switched off and that the key has been pulled
out of the ignition lock before opening the
bonnet.
! Make sure that the windscreen wipers are
not folded away from the windscreen .Oth-
erwise, you could damage the windscreen
wipers or the bonnet. 290
Engine compartmentMaintenance and care

Opens the bonnet
The release lever on the bonnet is in the foot-
well on the left-hand side of the vehicle when
viewed in the direction of travel.
X Make sure that the windscreen wipers are
switched off.
X Pull release lever :on the bonnet.
The bonnet is released. Vehicles with a petrol engine
Vehicles with a diesel engine X
Lift the bonnet slightly.
X Petrol engine: push the handle of bonnet
catch ;in the direction of the arrow and
lift the bonnet.
X Diesel engine: pull the handle of bonnet
catch ;in the direction of the arrow and
lift the bonnet.
Closing the bonnet G
WARNING
Make sure that nobody can become trapped
as you close the bonnet.
X Lower the bonnet and let it fall from a
height of approximately 20 cm.
X Check that the bonnet has engaged prop-
erly.
If the bonnet can be raised slightly, it is not
properly engaged. Open it again and close
it with a little more force. Radiator
i Vehicles with adiesel engine: do not
cover the radiator. Do not use thermal
mats, insect protection covers or anything
similar. Doing so can cause the Onboard
Diagnostics System to display inaccurate
values. Some of these values are legally
required and must always be correct. Engine oil
Notes on oil level Depending on your driving style, the vehicle
consumes up to 0.
8lof oil per 1,000 km. The
oil consumption may be higher than this when
the vehicle is new or if you frequently drive at
high engine speeds. Engine compartment
291Maintenance and care Z

Checking the oil level using the oil dip-
stick
Example
:oil dipstick
On the G 65 AMG, the oil level can be checked
using the on-board computer only.
On all other models, the dipstick must be
used to chec kthe engine oil level.
When checking the oil level:
R park the vehicle on a level surface.
R the engine should be switched off for
approximately five minutes if the engine is
at normal operating temperature.
R the engine should be switched off for at
least 30 minutes if the engine is not at
operating temperature (i.e. if you only start
the engine briefly).
X Pull oil dipstick :out of the oil dipstick
tube.
X Wipe off oil dipstick :.
X Slowly slide oil dipstick :into the guide
tube to the stop, and take it out again.
The oil level is correct if the level is between
MIN mark =and MAX mark ;.
X Top up the oil if necessary.
Checking the oil level using the on-
board computer !
Do not add too much oil. Topping up with
too much engine oil can result in damage
to the engine or to the catalytic converter.
Have excess engine oil siphoned off.
G6 5 AMG: the oil level can be checked using
the on-board computer only. On all other models, the dipstic
kmust be
used to chec kthe engine oil level.
When checking the oil level:
R park the vehicle on a level surface.
R the engine should be switched off for
approximately five minutes if the engine is
at normal operating temperature.
X Make sure that the key is in position 2in
the ignition lock.
X Press the &or* button on the steer-
ing wheel to select the following message: The measurement takes a few seconds. You
will see one of the following messages in the
multifunction display:
R Engine oil level OK R
Add 1.0 l to reach maximum oil level
R
Add 1.5 litres to reach maximum oil level
R
Add 2.0 l to reach maximum oil level
X
Top up the oil if necessary.
If the engine is at normal operating tempera-
ture and the Engine oil Reduce oil level message appears, the engine oil level
is too high.
X Have excess oil siphoned off.
If the Switch ignition on to check engine oil level message appears:
X Turn the key to position 2in the ignition
lock (Y page 143).
If the Observe waiting time message
appears: 292
Engine compartmentMaintenance and care

X
If the engine is at normal operating tem-
perature: repeat the measuremen tafter
about five minutes.
X If the engine is not at normal operating
temperature: (e.g. if the engine was only
started briefly) repeat the measurement
after about 30 minutes.
If the Engine oil level Not when engine on message appears:
X Switch off the engine.
X If the engine is at normal operating tem-
perature: wait about five minutes before
carrying out the measurement.
X If the engine is not at normal operating
temperature: e.g. if the engine was only
started briefly, wait approximately
30 minutes before carrying out the meas-
urement.
i If you wish to cancel the measurement,
press the *or& button on the mul-
tifunction steering wheel.
Adding engine oil H
Environmental note
When topping up the oil, take care not to spill
any. If oil enters the soil or waterways, it is
harmful to the environment.
! Do not add too much oil .Ifthe oil level is
above the "max" mark on the dipstick, too
much oil has been added. This can lead to
damage to the engine or the catalytic con-
verter. Have excess oil siphoned off. Engine oil cap (example:
G 65 AMG) X
Turn cap :anti-clockwise and remove it.
X Top up with the amount of oil required.
Observe the specifications in the on-board
computer when doing so or fill carefully to the
maximum mark on the oil dipstick.
For further information on engine oil, see
(Y page 345).
i The difference between the minimum
mark and the maximum mark on the oil
dipstick is approximately 2litres.
X Replace cap :on the filler neck and
tighten clockwise.
Make sure that the cap locks securely into
place. Other service products
Checking the coolant level G
WARNING
The cooling system is pressurised. Therefore,
only unscrew the cap once the engine has
cooled down. The coolan ttemperature dis-
play must be less than 70 †. Otherwise, you
could be scalded if hot coolant escapes. X
Park the vehicle on a level surface.
Only chec kthe coolant level if the vehicle
is on a level surface and the engine has
cooled down.
X Turn the key to position 2(Ypage 143) in
the ignition lock. Engine compartment
293Maintenance and care Z

The ASSYST service interval display does not
take into account any periods of time during
which the battery is disconnected.
Hiding aservice message X
To hide the service message, press the
% back button on the multifunction
steering wheel ( Ypage 31)( Ypage 214).
Displaying service messages Use the buttons on the multifunction steering
wheel.
X Switch the ignitio non.
X Press VorU to select the standard
display menu on the steering wheel
(Y page 215).
X Press &or* to select the ASSYST
service interval display.
The ¯ or± service symbol and the
service due date are displayed.
Information about Service Arduous operating conditions or increased
loads on the vehicle will require some service
work to be performed more often than for a
vehicle in normal use. Such arduous condi-
tions include regular city driving with frequent
intermediate stops and use in mountainous
terrai noronp oor road surfaces.
For example, if the vehicle is used under ardu-
ous operating conditions, have air filters,
engine oil and oil filters changed frequently
and check the wheels often.F urther informa-
tion can be obtained at a qualified specialist
workshop, e.g. a Mercedes-Ben zService
Centre. Fuel/water separator
H
Environmental note
Dispose of service products in an environ-
mentally-responsible manner. !
If you continue driving without having the
fuel/water separator serviced, this could
cause damage to the engine. Any resulting
damage is not covered by the warranty.
If the fuel/water separator needs servicing,
the following message appears in the multi-
function display: You will also hear a brief warning tone.
X
Visit a qualified specialist workshop as
soon as possible. Care
General notes
Regular care of your vehicle is a condition for
retaining the quality in the long term.
Use care products and cleaning agents rec-
ommended and approved by Mercedes-Benz.
! For cleaning your vehicle, do not use any
of the following:
R dry, rough or hard cloths
R abrasive cleaning agents
R solvents
R cleaning agents containing solvents
Do not scrub.
Do not touch the surfaces or protective
films with hard objects, e.g. a ring or ice
scraper. You could otherwise scratch or
damage the surfaces and protective film. H
Environmental note
Dispose of empty packaging and cleaning
cloths in an environmentally responsible man-
ner.
! Do not park up the vehicle for an extended
period straight after cleaning it, particularly Care
295Maintenance and care Z

X
Vehicles with stainless-steel spare
wheel cover: make sure when refitting
cove rpanel ?that retainer Aengages in
recess B(Ypage 308).
X Make sure that tab ;is below when refit-
ting cover ring :(Ypage 308).
X For safety reasons, regularly check to
ensure that the wheel is securely fastened. G-Class Cabriolet
i
Secure the spare wheel of the G-Class
Cabriolet on spare wheel bracket ;, so
that valve :is accessible for checking the
tyre pressure. Flat tyre
Preparing the vehicle
X Stop the vehicle as far away as possible
from traffic on solid ,non-slippery and level
ground.
X Switch on the hazard warning lamps
(Y page 109).
X Deactivate the automatic door locking
(Y page 223).
X Apply the parking brake.
X Bring the front wheels into the straight-
ahead position.
X Move the selector lever to P.
X Switch off the engine.
X Remove the key from the ignition lock.
The steering wheel lock stays active for as
long as the key is removed. X
All occupants must get out of the vehicle.
Make sure that they are not endangered as
they do so.
X Make sure that no one is near the danger
area while a wheel is being changed. Any-
one who is not directly assisting in the
wheel change should, for example, stand
behind the barrier.
X Get out of the vehicle. Pay attention to traf-
fic conditions when doing so.
X Close the driver's door.
X Place the warning triangle (Y page 304) or
warning lamps at a suitable distance.
Observe legal requirements. Battery (vehicle)
Important safety notes
Work on the battery, e.g. removing or instal-
ling, requires specialist knowledge and the
use of special tools. Therefore, always have
work on the battery carried out at a qualified
specialist workshop. G
WARNING
Work carried out incorrectly on the battery
can, for example, lead to a short circuit and
damage your vehicle's electronic system. This
can disrupt driving safety systems such as
ABS (anti-lock braking system) or ESP ®
(Elec-
tronic Stability Program).
R If ABS malfunctions, the wheels can lock
during braking. This limits the steerability
of the vehicle when braking and the braking
distance may increase. There is a risk of
accident.
R If ESP ®
malfunctions, the vehicle will not be
stabilised if it starts to skid or a wheel starts
to spin. There is a risk of accident.
You should therefore have all work involving
the battery carried out at a qualified specialist
workshop. Battery (vehicle)
309Breakdown assistance Z