2017 MERCEDES-BENZ G-Class open hood

Engine compartment
Hood
Important safety notes
GWARNING
If th ehood is unlatched, it may open up when
th ev ehicle is in motion and blocky our view.
Thereisar isk of an accident.
Never unlatch th ehood while driving .Before
ever ytrip, ensure that th ehood is locked.
GWARNING
When opening and closingt hehood,itm ay
suddenly fall int othe closed position.T hereis
ar isk of injury to personsw ithin range of
movementoft hehood.
Open and close th ehood only when no onei s
within its range of movement.
GWARNING
Opening th ehood when th eengine is over-
heated or when there is afireint heengine
compartmen tcoul de xpose you to hot gases
or other servic eproducts. Thereisar isk of
injury.
Let an overheate dengine coo ldown before
opening th ehood.Ift here is afireint he
engine compartment, keep th ehood closed
and contac tthe fired epartment.
GWARNING
The ignition system and th efuel injection sys-
te mw ork unde rhigh voltage. If you touch
component swhicha re unde rvoltage, you
coul dget an electric shock. Thereisar isk of
injury.
Never touch component softheignition sys-
te morf uel injection system when th eignition
is switched on.
GWARNING
The engine compartmen tcontain smoving
components. Certain components, sucha s
th er adiator fan ,may continue to run or start
again suddenly when th eignition is off .There
is ar isk of injury.
If you nee dtodoany work inside th eengine
compartment:
Rswitch off th eignition
Rnever reac hintot he area wheret here is a
risk of danger from moving components,
suchast hefan rotatio narea
Rremove jewelry and watches
Rkeep items of clothing and hair, for exam-
ple, away from moving parts
Do no ttou ch th efollowingw hen theignition is
switched on:
RIgnition coils
RSpar kplug connectors
RTest socket
Opening th ehood
GWARNING
Certain component sintheengine compart-
ment, suchast heengine ,radiator and parts
of th eexhaust system, can become ver yhot.
Workin gintheengine compartmen tposesa
risk of injury.
Wherep ossible, let th eengine coo ldown and
touch only th ecomponent sdescribe dinthe
following.
GWARNING
When th ehood is open and th ewindshield
wipersa re set in motion,y ou can be injured by
th ew iper linkage. Thereisar isk of injury.
Always switch off th ewindshield wipersa nd
th ei gnition before opening th ehood.
!Makes ure that th ewindshield wipersa re
no tfolded away from th ewindshield. You
coul dotherwise damag ethe windshield wip-
ers or th ehood.
Engine compartment225
Maintenance and care
Z

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.
XMake sure that the windshield wipers are
turned off.
XPull release lever:on the hood.
The hood is released.
XLift the hood slightly.
XPush the handle of hood catch ;in the direc-
tion of the arrow and lift the hood.
The hood is opened and held open automati-
cally by the gas-filled strut.
Closing the hood
XLower the hood and let it fall from aheight of
approximately 8in(20 cm).
XCheck that the hood has engaged properly.
If the hood can be raised slightly, it is not
properly engaged. Open it again and close it
withalittle more force.
Radiator
Do not cover up the radiator, such as with a
thermal mat or insect protection cover. Other-
wise, the values of the European on-board diag- nostics may be affected. Some of these read-
ings are required by law and must be accurate at
all times.
Engine oil
Important safety notes
GWARNING
Certain components in the engine compart-
ment,s uch as the engine, radiator and parts
of the exhaust system, can become very hot.
Workin ginthe engine compartment poses a
risk of injury.
Where possible, let the engine cool down and touch only the components described in the
following.
GWARNING
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 ar isk of injury.
If you need to do any work inside the engine
compartment:
Rswitch off the ignition
Rnever reach into the area where there is a
risk of danger from moving components,
such as the fan rotation area
Rremove jewelry and watches
Rkeep items of clothinga nd hair, for exam-
ple, away from moving parts
GWARNING
If engine oil comes into contact with hot com- ponent sinthe engine compartment,itm ay
ignite. There is arisk of fire and injury.
Make sure that engine oil is not spilled next to
the filler neck.L et the engine cool down and
thoroughly clean the engine oil off the com-
ponent sbefore starting the engine.
226Engine compartment
Maintenance and care

GWARNING
Opening the hood when the engine is over-
heated or when there is afire in the engine
compartment coul dexpose you to hot gases
or other service products. There is arisk of
injury.
Let an overheated engine cool downb efore
opening the hood. If there is afire in the
engine compartment, keep the hood closed
and contact the fire department.
Notes on the oil level
Depending on you rdriving style ,the vehicle
consumes up to 0.9 US qt (0.8 liters )ofoil per
600 mile s(1000 km). The oil consumption may
be higher than this whe nthe vehicle is new or if
you frequently drive at high engine speeds.
Depending on the engine, the oil dipstick may be
in ad ifferent location.
When checking the oil level:
Rpark the vehicle on alevels urface
Rthe engine should be switched off for approx-
imately five minutes if the engine is at normal
operating temperature
Rif the engine is not at normal operating tem-
perature, e.g. if the engine wa sonly started
briefly,w aita pproximately 30 minutes before
carrying out the measurement
Checking the oil level usingt he oil dip-
stick
Example: engine compartment
On the G63AMG, the oil levelc an be checked
using the oil dipstick.
XPul loil dipstick :out of the dipstick guide
tube.
XWipeo ff oil dipstick :.
XSlowly slide oil dipstick :into the guide tube
to the stop and take it out again after approx-
imately three seconds.
If the levelisb etween MIN mark =and MAX
mark ;,the oil levelisc orrect.
XIf the oil levelh as dropped to MIN mark =or
below, add 1.1 US qt (1.0 l)of engine oil.
On all other models, the on-board computer
must be used to check the engine oil level.
Checking the oil level using the on-
board computer
G5 50: the oil level can only be checked using
the on-board computer.
XMake sure that the SmartKey is in position 2
in the ignition lock.
XPress 9or: on the steering wheel to
select the following message: Measuring
EngineOilLevelAccurateOnlyWhenVehicle Is Level
The measurement takesafew seconds. You will
see one of the following messages in the multi-
function display:
REngine Oil Level OK
RAdd1.1litersEng.OilatNextRefu‐eling
XAdd oil if necessary.
If the engine is at normal operating temperature and the Reduce Engine Oil Level
display
appears, too much oil has been added.
XHave excess oil siphoned off.
If the For Engine Oil Level Ignition
Must Be Onmessage appears:
XTurn the SmartKey to position 2in the igni-
tion lock (Ypage 104).
If the Need More Time to Check Engine
Oil Levelmessage appears:
XIf the engine is at norma loperating tem-
perature: repeat the measurement after
approximately five minutes.
XIf the engine is not at norma loperating
temperature: e.g. if the engine was only star-
ted briefly, repeat the measurement after
approximately 30 minutes.
Engine compartment227
Maintenance and care
Z

If you need to do any work inside the engine
compartment:
Rswitch off the ignition
Rnever reach into the area where there is a
risk of danger from moving components,
such as the fan rotation area
Rremove jewelry and watches
Rkeep items of clothing and hair, for exam-
ple, awayfrom moving parts
GWARNING
The cooling system is pressurized, particularly
when the motor is warm. If you open the cap,
you could be scaldedifh ot coolant spraysout.
There is arisk of injury.
Let the engine cool down before you open the
cap. Wear gloves and eye protection. Slowly
open the cap to relieve pressure.
GWARNING
Opening the hood when the engine is over-
heated or when there is afire in the engine
compartment could expose you to hot gases
or other service products. There is arisk of
injury.
Let an overheated engine cool down before
opening the hood. If there is afire in the
engine compartment, keep the hood closed
and contact the fire department.
Checking coolant level
Checking the coolant level (example)
XPark the vehicle on alevel surface. Only check the coolant level when the vehicle
is on alevel surface and the engine has cooled
down.
XTurn the SmartKey to position 2in the igni-
tion lock (Ypage 104).
XCheck the coolant temperature display in the
instrument cluster.
The coolant temperature must be below
158 ‡(70 †).
XSlowlyt urn cap :half aturn counter-clock-
wise and allow excess pressure to escape.
XTurn cap :further counter-clockwise and
remove it.
If the coolant is at the level of marker bar =
in the fillern eck 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 fillern eck
when warm, there is enough coolant in cool-
ant expansion tank ;.
XIf necessary,add coolant that has been tested
and approved by Mercedes-Benz.
XReplace cap :and turn it clockwise as far as
it willg o.
For further information on coolant, see
(
Ypage 279).
Adding washe rfluid to the windshield
washe rsystem/headlamp cleaning
system
GWARNING
Windshield washer concentrate could ignite if it comes into contact with hot engine compo-
nents or the exhaust system. There is arisk of
fire and injury.
Make sure that no windshield washer con-
centrate is spilled next to the fillern eck.
Engine compartment229
Maintenanceand care
Z

Charging thebattery
!
Only use battery chargers witham aximum
chargin gvoltage of 14.8 V.
GWARNING
During chargin gand jump-starting, explosive
gases can escape from th ebattery. Thereisa
ris kofane xplosion.
Particularly avoid fire, open flames, creating
sparks and smoking. Ensure there is sufficient
ventilatio nwhile chargin gand jump-starting.
Do no tlean ove rabattery.
GWARNING
Battery acid is caustic .Thereisar iskofi njury.
Avoid contac twiths kin, eyes or clothing .Do
no tinhale any battery gases.Don otlean over
th eb attery. Keep childre naway from batter-
ies. Wash away battery acid immediately with
plenty of clean wate rand seek medical atten-
tion.
GWARNING
Ad ischarged battery can freezeatt empera-
tures below freezing point. When jump-start-
ing th evehicle or chargin gthe battery, gases
can escape from th ebattery. Thereisar isko f
an explosion.
Allow th efroze nbattery to thaw out before
chargin gitorjump-starting.
!Only charge th ebattery usingt hejump-
starting connection point.
The jump-startin gconnection pointisint he
enginec ompartmen t(
Ypage 243).
XOpen thehood.
XConnect th ebattery charge rtothepositive
terminal and ground pointint hesame order
as when connecting th edonor battery in the
jump-startin gprocedure (
Ypage 243).
Keep away from fir eand open flames. Do not
lean ove rabattery. Never charge th ebattery if it
is still installed in th evehicle ,unless you use a
battery charge rwhichh as been tested and
approved by Mercedes-Benz. Abattery charger
unit specially adapted for Mercedes-Ben zvehi-
cle sand tested and approved by Mercedes-
Ben zisa vailable as an accessory. It permits the
chargin gofthebattery in its installed position.
Contac tanauthorized Mercedes-Ben zCenter
for further informatio nand availability. Read the
battery charger's operatin ginstructionsb efore
chargin gthe battery.
If th ewarning and indic
ator lamps do no
tlight up
on th einstrumen tcluste rwhen temperatures
are low, it is probably because th edischarged
battery has frozen.Int hisc asey ou may neither
jump-star tthe vehicle no rcharge th ebattery.
The servic elife of athawed-out battery may be
shorter. The starting characteristic scan be
impaired, particularly at low temperatures. Have
th et hawed-out battery checked at aqualified
specialist workshop.
Jump-starting
For th ejump-startin gprocedure, use only th ejump-startin gconnection pointint heenginec om-
partment, consisting of apositiv etermi nal and aground point.
GWARNING
Battery acid is caustic .Thereisar iskofi njury.
Avoid contac twiths kin, eyes or clothing .Donotinhale any battery gases.Don otlean ove rthe
battery. Keep childre naway from batteries .Wash away battery acid immediately withp lenty of
clean wate rand seek medical attention.
GWARNING
During chargin gand jump-starting, explosive gases can escape from th ebattery. Thereisar isk
of an explosion.
Jump-starting243
Breakdown assistance
Z