2015 MERCEDES-BENZ G-Class engine

12 V sockets
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
a maximum current draw of 180 W (15 A)
each, e.g. bulbs 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 SmartKey to position 2in the igni-
tion lock.
Socket in the front-passenger footwell X
Lift up the cover of the socket.
i The cigarette lighter socket can be also
used (Y page 256). This is the case even if
the SmartKey has been removed from the
ignition lock. Socket in the rear compartment The socket is located on the center console in
the rear compartment.
X Lift up the cover of the socket.
Socket in the cargo compartment The socket is located in the cargo compart-
ment on the left-hand side, when viewed in
the direction of travel, next to the rear door.
X Lift up the cover of the socket. 115 V socket
G
WARNING
The 115 VAC power socket operates on high
voltage. Use the 115 V AC power socket in the
vehicle with the same caution and care that
you would take with power sockets at home.
Keep fluids away from the 115 V AC power
socket. Do not use liquids or sharp tools to
clean the power socket. Keep the cover of the 115 V AC power socket closed when not in Features
257Stowage and features
Z

Important safety notes
G
WARNING
When you operate or program the garage door with the integrated garage door opener, per-
sons in the range of movement of the garage
door can become trapped or struck by the
garage door. There is a risk of injury.
When using the integrated garage door
opener, always make sure that nobody is
within the range of movement of the garage
door. G
WARNING
Combustion engines emit poisonous exhaust
gases such as carbon monoxide. Inhaling
these exhaust gases leads to poisoning. There is a risk of fatal injury. Therefore never leave
the engine running in enclosed spaces with-
out sufficient ventilation.
When programming a garage door opener,
park the vehicle outside the garage. Do not
run the engine while programming.
Programming the remote control Programming
Pay attention to the "Important safety notes"
(Y page 267). Integrated remote control in the rear-view mirror
:
Indicator lamp
;=? Transmitter buttons
A Garage door remote control
B Transmitter button on the garage
door remote control Garage door remote control
Ais not part of
the garage door opener.
i To achieve the best result, insert new bat-
teries in garage door remote control Aof
your garage door drive before program-
ming.
X Delete the memory of the integrated
remote control (Y page 270) before pro-
gramming it for the first time.
X Turn the SmartKey to position 2in the igni-
tion lock (Y page 133).
X Press and hold transmitter button ;,=
or ?.
After a short time, indicator lamp :will
start flashing. It flashes approximately
once per second.
i Indicator lamp
:flashes immediately
the first time that the transmitter button is programmed. If this transmitter button hasalready been programmed, indicator
lamp :will only start flashing at a rate of
once a second after 20 seconds have
elapsed.
X Continue to hold the transmitter button.
X Point transmitter button Bof garage door
remote control Atowards the transmitter
buttons on the rear-view mirror at a dis-
tance of 2 to 12 inches (5 to 30 cm).
i The distance between garage door
remote control Aand the integrated
garage door opener depends on the system of the garage door drive. Several attempts
might be necessary. You should test every
position for at least 20 seconds before try- ing another position.
X Keep transmitter button Bon garage door
remote control Apressed until indicator
lamp :starts to flash rapidly.
The programming has been successful if
indicator lamp :flashes rapidly.
X Release transmitter buttons ;,=or?
on the integrated remote control and trans-
mitter button Bon the garage door remote
control. Features
267Stowage and features Z

Useful information
............................274
Engine compartment ........................274
Maintenance ...................................... 279
Care .................................................... 281 273Maintenance and care

Useful information
i This Operator's Manual describes all
models and all standard and optional equip- ment of your vehicle available at the time of
publication of the Operator's Manual.
Country-specific differences are possible.
Please note that your vehicle may not be
equipped with all features described. This
also applies to safety-related systems and
functions.
i Read the information on qualified special-
ist workshops: (Y page 24). Engine compartment
Hood
Important safety notes G
WARNING
If the hood is unlatched, it may open up when the vehicle is in motion and block your view.
There is a risk of an accident.
Never unlatch the hood while driving. G
WARNING
Certain components in the engine compart-
ment may be very hot, e.g. the drive system
and radiator. Working in the engine compart-
ment poses a risk of injury.
If possible, let the drive system cool down and only touch the components described in the
following. G
WARNING
Opening the hood when the engine is over-
heated or when there is a fire in the engine
compartment could expose you to hot gases
or other service products. There is a risk of
injury.
Let an overheated engine cool down before
opening the hood. If there is a fire in the
engine compartment, keep the hood closed
and contact the fire department. G
WARNING
The ignition system and the fuel injection sys- tem work under high voltage. If you touch
components which are under voltage, you
could get an electric shock. There is a risk of
injury.
Never touch components of the ignition sys-
tem or fuel injection system when the ignition is switched on. G
WARNING
The engine compartment contains moving
components. Certain components, such as
the radiator fan, may continue to run or start
again suddenly when the ignition is off. There is a risk of injury.
If you need to do any work inside the engine
compartment:
R switch off the ignition
R never reach into the area where there is a
risk of danger from moving components,
such as the fan rotation area
R remove jewelry and watches
R keep items of clothing and hair, for exam-
ple, away from moving parts G
WARNING
When the hood is open and the windshield
wipers are set in motion, you can be injured by the wiper linkage. There is a risk of injury.
Always switch off the windshield wipers and
the ignition before opening the hood.
! Make sure that the windshield wipers are
not folded away from the windshield. You
could otherwise damage the windshield
wipers or the hood.
Do not touch the following when the ignition
is switched on: R ignition coils
R spark plug connectors
R test socket 274
Engine compartmentMaintenance and care

Opening the hood
The release lever on the hood is in the footwell
on the left-hand side of the vehicle when
viewed in the direction of travel.
X Make sure that the windshield wipers are
switched off.
X Pull release lever :on the hood.
The hood is released. X
Lift the hood slightly.
X Push the handle of hood catch ;in the
direction of the arrow and lift the hood.
Closing the hood G
WARNING
If the hood is unlatched, it may open up when the vehicle is in motion and block your view.
There is a risk of an accident.
Never unlatch the hood while driving. X
Lower the hood and let it fall from a height
of approximately 8 inches (20 cm).
X Check that the hood has engaged properly.
If the hood can be raised slightly, it is not
properly engaged. Open it again and close
it with a little more force. Engine oil
Notes on the oil level Depending on your driving style, the vehicle
consumes up to 0.9 US qt (0.8 liters) of oil per
600 miles (1000 km). The oil consumption
may be higher than this when the vehicle is
new or if you frequently drive at high engine
speeds.
Checking the oil level using the oil dip-
stick G
WARNING
Certain components in the engine compart-
ment, such as the engine, radiator and parts
of the exhaust system, can become very hot.
Working in the engine compartment poses a
risk of injury.
Where possible, let the engine cool down and touch only the components described in the
following. Example: oil dipstick Engine compartment
275Maintenance and care Z

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, e.g. if you only start the engine briefly.
X Pull oil dipstick :out of the dipstick guide
tube.
X Wipe off oil dipstick :.
X Slowly slide oil dipstick :into the guide
tube to the stop, and take it out again.
If the level is between MIN mark =and
MAX mark ;, the oil level is correct.
X Add oil if necessary.
Checking the oil level using the on-
board computer !
Do not add too much oil. adding too much
engine oil can result in damage to the
engine or to the catalytic converter. Have
excess engine oil siphoned off.
G 65 AMG: the oil level can be checked using
the on-board computer only.
On all other models, the oil dipstick must be
used to check the 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 SmartKey is in position
2 in the ignition lock.
X Press the 9or: 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 Engine Oil Level OK
R Add 1.0 qt
Add 1.0 qt (Canada:1.0 liter
1.0 liter) to
to
reach maximum oil level
reach maximum oil level
R Add 1.5 qts
Add 1.5 qts (Canada:1.5 liters
1.5 liters) to
to
reach maximum oil level
reach maximum oil level
R Add
Add 2.0 qts.
2.0 qts. (Canada:2.0 liters
2.0 liters )to
to
reach maximum oil level reach maximum oil level
X Add oil if necessary.
If the engine is at normal operating tempera- ture and the Engine oil Reduce oil Engine oil Reduce oil
level
level display appears, too much oil has been
added.
X Have excess oil siphoned off.
If the Switch ignition on to check
Switch ignition on to check
engine oil level
engine oil level message appears:
X Turn the SmartKey to position 2in the igni-
tion lock (Y page 133).
If the Observe waiting time
Observe waiting time message
appears:
X If the engine is at normal operating tem-
perature: repeat the measurement after
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 approximately 30 minutes.
If the Engine oil level Not when Engine oil level Not when
engine on
engine on message appears:276
Engine compartmentMaintenance and care

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 9or: button on the mul-
tifunction steering wheel.
Adding engine oil G
WARNING
Certain components in the engine compart-
ment, such as the engine, radiator and parts
of the exhaust system, can become very hot.
Working in the engine compartment poses a
risk of injury.
Where possible, let the engine cool down and touch only the components described in the
following. G
WARNING
If engine oil comes into contact with hot com- ponents in the engine compartment, it may
ignite. There is a risk of fire and injury.
Make sure that engine oil is not spilled next to
the filler neck. Let the engine cool down and
thoroughly clean the engine oil off the com-
ponents before starting the engine. H
Environmental note
When adding oil, take care not to spill any. If
oil enters the soil or waterways, it is harmful to the environment.
! Only use engine oils and oil filters that
have been approved for vehicles with a ser-
vice system. You can obtain a list of the
engine oils and oil filters tested and
approved in accordance with the
Mercedes-Benz Specifications for Service Products at any Mercedes-Benz Service
center.
Damage to the engine or exhaust system is
caused by the following:
R using engine oils and oil filters that have
not been specifically approved for the
service system
R replacing engine oil and oil filters after
the interval for replacement specified by
the service system has been exceeded
R using engine oil additives.
! Do not add too much oil. If the 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. Example: engine oil cap
X Turn cap :counter-clockwise and remove
it.
X Add 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.
Further information on engine oil
(Y page 340).
i The difference between the minimum
mark and the maximum mark on the oil
dipstick is approximately 2.1 US qt (2 l).
X Replac e cap:on the filler neck and
tighten clockwise.
Ensure that the cap locks into place
securely. Engine compartment
277Maintenance and care Z

Additional service products
Checking coolant level G
WARNING
Certain components in the engine compart-
ment, such as the engine, radiator and parts
of the exhaust system, can become very hot.
Working in the engine compartment poses a
risk of injury.
Where possible, let the engine cool down and touch only the components described in the
following. G
WARNING
The engine cooling system is pressurized, par- ticularly when the engine is warm. When
opening the cap, you could be scalded by hotcoolant spraying out. There is a risk of injury.
Let the engine cool down before opening the
cap. Wear eye and hand protection when
opening the cap. Open the cap slowly half a
turn to allow pressure to escape. X
Park the vehicle on a level surface.
Only check the coolant level when the vehi-
cle is on a level surface and the engine has
cooled down.
X Turn the SmartKey to position
2(Y page 133) in the ignition lock.
X Check the coolant temperature display in
the instrument cluster.
The coolant temperature must be below
158 ‡ (70 †). X
Slowly turn cap :half a turn counter-
clockwise to allow excess pressure to
escape.
X Turn cap :further counter-clockwise and
remove it.
If the coolant is at the level of marker bar =
in the filler neck when cold, there is enough
coolant in coolant expansion tank ;.
If the coolant level is approximately 0.6 in
(1.5 cm) above marker bar =in the filler
neck when warm, there is enough coolant
in coolant expansion tank ;.
X If necessary, add coolant that has been tes-
ted and approved by Mercedes-Benz.
X Replace cap :and turn it clockwise as far
as it will go.
For further information on coolant, see
(Y page 342).
Adding washer fluid to the windshield
washer system/headlamp cleaning
system G
WARNING
Certain components in the engine compart-
ment, such as the engine, radiator and parts
of the exhaust system, can become very hot.
Working in the engine compartment poses a
risk of injury.
Where possible, let the engine cool down and touch only the components described in the
following. G
WARNING
Windshield washer concentrate could ignite if it comes into contact with hot engine compo-
nents or the exhaust system. There is a risk of
fire and injury.
Make sure that no windshield washer con-
centrate is spilled next to the filler neck. 278
Engine compartmentMaintenance and care