2016 MERCEDES-BENZ G-CLASS SUV engine

Removin
gthe spare wheel The spare wheel is heavy. Observ
ethis when
removing the spare wheel.
X Remove wheel nuts :.
X Remove the spare wheel.
Fitting the wheel After changing
awheel:
X Secure the damaged whee lonthe spare
whee lbracket with whee lnuts :.W hen
doing so, make sure tha tthe whee lcannot
come loose.
X Cover the whee lwitht he tyr eprotection
cover.
X For safety reasons ,regularly check to ensure
tha tthe whee lissecurel yfastened. Flat tyre
Preparing the vehicle
X Sto pthe vehicle as far away as possible from
traffic on solid, non-slippery and level ground.
X Switch on the hazard warning lamps.
X Secure the vehicle against rolling away
(Y page 113).
X If possible, bring the front wheels into the
straight-ahead position.
X Switch off the engine.
X Remove the key from the ignition lock.
The steering wheel lock is active as soon as
the key is removed.
X Make sure that the passengers are not endan-
gered as they get out of the vehicle. Make
sure that no one is near the danger area while
aw heel is being changed. Anyone 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 traffic
condition swhen doing so.
X Close the driver' sdoor.
X Place the warning triangle asuitable distance
away (Y page 222). Observe legal require-
ments. Batter
y(vehicle) Importan
tsafety notes
Wor kont hebattery, e.g. removing or fitting,
require sspecialist knowledge and th euse of
special tools. Therefore, always have wor kon
th eb attery carrie dout at aqualified specialist
workshop. G
WARNING
Work carried ou tincorrectly on the battery
can lead, for example, to ashort circui tand
thus damage the vehicl eelectronics. This can
leadtof unction restrictions applying to
safety-relevant systems ,e.g the lighting sys-
tem, the ABS (anti-lock braking system) or the
ESP ®
(Electronic Stability Program). The oper-
ating safety of yourv ehiclemay be restricted.
You coul dlose control of the vehicle, for
example:
R when braking
R in the event of abrupt steering manoeuvres
and/or when the vehicle's spee disnot
adapted to the road conditions
There is arisk of an accident.
In the event of ashort circui torasimilar inci-
dent, contact aqualified specialist workshop
immediately. Do not drive any further. Always have work on the battery carrie dout at a
qualified specialist workshop.
Further information about ABS (Y page52) and
ESP ®
(Y page5 4). G
WARNING
Electrostatic build-u pcan leadtot he creation
of sparks, which coul dignite the highly explo- 224
Battery (vehicle)Breakdown assistance

sive gases of
abattery. There is arisk of an
explosion.
Before handling the battery, touch the vehicle body to remove any existing electrostatic
build-up.
The highly flammable gas mixture is created
while the battery is charging and when jump-
starting.
Always make sure that neither you nor the bat-
tery is electrostatically charged. Electrostatic
charge is created, for example:
R by wearing synthetic-fibre clothing
R by friction between clothing and the seat
R if you pull or push the battery across carpet or
other synthetic materials
R if you rub the battery with acloth G
WARNING
During the charging process, abattery produ-
ces hydrogen gas. If ashort circui toccurs or
sparks are created ,the hydrogen gas can
ignite. There is arisk of an explosion.
R Make sure that the positive terminal of a
connected battery does not come into con-
tact with vehicl eparts.
R Never place metal objects or tools on abat-
tery.
R It is important that you observe the descri-
bed order of the battery terminal swhen
connecting and disconnecting abattery.
R When jump-starting, make sure that the
battery pole swith identical polarity are
connected.
R It is particularl yimportant to observe the
described order when connecting and dis-
connecting the jump leads.
R Never connect or disconnect the battery
terminal swhile the engine is running. G
WARNING
Battery acid is caustic. There is arisk of injury.
Avoid contact with the skin, eyesorc lothing.
Do not breathe in any battery gases. Do not
leano ver the battery .Keep the batterie sout
of the reach of children. Immediately rinse off battery acid thoroughly with plenty of clean
wate
rand seek medical attention at once. H
Environmenta
lnote Batteries contain pollutants.
It is illegal to dispose of them
with th ehousehold rubbish.
The ym ustb ec ollected sep-
arately and disposed of in an environmentall yresponsible
recycling system. Dispose of batteries in an
environmentall
yresponsible
manner. Take discharged
batteries to aquali fied spe-
cialist workshop or to acol-
lectio npoint for used batter-
ies.
! Hav
ethe battery checked regularly at a
qualified specialis tworkshop.
Observe the servic eintervals in the Service
Bookle torcontact aquali fied specialis twork-
sho pfor mor einformation.
! Alway
shavew orkont he batteries carried
ou tata qualified specialis tworkshop.
Shoul dit, in exceptiona lcircumstances ,be
absolutely necessary to disconnect the 12-
vol tbattery yourself, please observe the fol-
lowing:
R Secure the vehicl etoprevent it fro mrolling
away
R Switch off the ignition
R Disconnect the negative termina lfirst and
the nthe positive terminal
The transmission is locked in position j
after disconnecting the battery.
After the work is completed ,securel yrefit the
battery and the positive termina lcover.
Compl ywiths afety precautions and take pro-
tective measures when handling batteries. Risk of explosion.
Fire
,naked flames and smoking are
prohibited whe nhandling the bat-
tery .Avoid creating sparks. Batter
y(vehicle)
225Breakdown assis tance Z

Battery aci
discaustic.
Avoid contact with the skin, eyes and clothing. Wea
reye protection. Keep children at
asafe distance. Observe this Owner's Manual.
For safety reasons, Mercedes-Benz recom-
mends that you use only batteries that have
been tested and approved for your vehicle by
Mercedes-Benz. These batteries provide
increased impact protection to prevent the vehi-
cle occupants from suffering acid burns should
the battery be damaged in the event of an acci- dent.
In order for the battery to achieve the maximumpossible service life, it should always be suffi-
ciently charged.
Like other batteries, the vehicle battery may
discharge over time if you do not use the vehicle.
In such cases, have the battery disconnected at aq uali fied specialist workshop .However, you
can also charge the battery with acharger rec-
ommended by Mercedes-Benz. For more infor-
mation, please contact aquali fied specialist
workshop.
Have the battery charge checked more fre-
quently if yo uuse the vehicle mainly for short
trips or if yo uleave it standing idl efor an exten-
ded period .Consul taq ualified specialist work-
shop if yo uwishtol eave your vehicle parked up
for along period of time.
Whe nyou park the vehicle, remove the key if you
do not require any electrica lconsumers. The
vehicle will then use very little energy, thus con- serving battery power.
i If the power supply has bee
ninterrupted,
e.g. du etoad ischarged battery, yo uwillh ave
to set the clock . Chargin
gthe battery
! Only use battery chargers wit
hamaximum
chargin gvoltage of 14.8 V. G
WARNING
During charging an djump-starting, explosive
gase scan escap efrom the battery .There is a
risk of an explosion.
Particularl yavoi dfire, naked flames, creating
sparks and smoking. Ensure there is sufficient
ventilation while charging and jump-starting.
Do not leano verabattery. G
WARNING
Battery acid is caustic. There is arisk of injury.
Avoid contact with the skin, eyesorc lothing.
Do not breathe in any battery gases. Do not
leano ver the battery .Keep the batterie sout
of the reach of children. Immediately rinse off
battery acid thoroughly with plenty of clean
water and seek medical attention at once. G
WARNING
Ad ischarged battery can freeze at tempera-
tures below freezing point. When jump-start-
ing the vehicl eorcharging the battery ,gases
can escap efrom the battery .There is arisk of
an explosion.
Allow the frozen battery to thaw out before
charging it or jump-starting.
! Only charge the battery using the jump-start
connection point.
The jump-starting connection point is in the
engine compartment (Y page227).
X Open the bonnet.
X Connect the battery charge rtothe positive
terminal and earth point in the same order as when connecting the donor battery in the
jump-starting procedure (Y page227).
Keep awayf rom fire and naked flames. Do not
leano ver the battery .Never charge the battery
if it is still fitted to the vehicle, unless you are
using abattery charge rthat has been tested and
approved by Mercedes-Benz. Abattery charger
unit speciallya dapted for Mercedes-Benz vehi-
cles and tested and approved by Mercedes-
Benz is available as an accessory. This device 226
Battery (vehicle)Breakdown assistance

permit
schargin gofthe battery while it is fitted.
Contact aMercedes-Benz Service Centr efor
information and availability. Read the battery
charger's operatin ginstructions before charg-
ing the battery.
If the warning and indicator lamps do not light up on the instrument cluster when temperatures
are low, it is probably because the discharged battery has frozen. In this case, you may neither
jump-start the vehicle nor charge the battery.
The servic elife of abattery that has been
thawed may be reduced. The starting charac-
teristics may be impaired, especially at low tem- peratures. Have the thawed battery checked at
aq ualified specialist workshop. Jump-starting
For the jump-starting procedure, use only the jump-starting connection point, consisting of apos-
itive terminal and an earth point, in the engine compartment. G
WARNING
Batterya cid is caustic. There is arisk of injury.
Avoid contact with the skin, eyesorc lothing. Do not breathe in any battery gases. Do not leano ver
the battery .Keep the batterie sout of the reach of children. Immediately rinse off battery acid
thoroughly with plenty of clea nwaterand seek medical attention at once. G
WARNING
During charging and jump-starting, explosive gase scan escap efrom the battery .There is arisk
of an explosion.
Particularl yavoidfire, naked flames, creating sparks and smoking. Ensure there is sufficient
ventilation while charging and jump-starting. Do not leano verabattery. G
WARNING
During the charging process ,abattery produces hydrogen gas. If ashort circui toccurs or sparks
are created ,the hydrogen gas can ignite. There is arisk of an explosion.
R Make sure that the positive terminal of aconnected battery does not come into contact with
vehicl eparts.
R Never place metal objects or tools on abattery.
R It is important that you observe the described order of the battery terminal swhen connecting
and disconnecting abattery.
R When jump-starting, make sure that the battery pole swith identical polarity are connected.
R It is particularl yimportant to observe the described order when connecting and disconnecting
the jump leads.
R Never connect or disconnect the battery terminal swhile the engine is running. G
WARNING
Ad ischarged battery can freeze at temperatures below freezing point. When jump-starting the
vehicl eorcharging the battery ,gase scan escap efrom the battery .There is arisk of an explosion.
Allow the frozen battery to thaw out before charging it or jump-starting.
If the warning and indicator lamp sdonot light up on the instrument cluster when temperatures are
low,itisp robably because the discharged battery has frozen. In this case, you may neither jump-
start the vehicl enor charge the battery .The service life of abattery that has been thawe dmay be Jump-starting
227Breakdown assistance Z

reduced. The starting characteristics may be impaired, especially at low temperatures. Have the
thawe dbattery checked at aqualified specialist workshop.
Do not use arapidc harging device to start the vehicle. If yourv ehicle's battery is discharged, the
engine can be jump-started from another vehicl eorfromasecond battery using jump leads.
Observe the following points:
R The battery is not accessible in all vehicles. If the other vehicle's battery is not accessible, jump-
start the vehicl eusing adonor battery or ajump-starting device.
R Do not start the engine if the battery is frozen. Let the battery thaw first.
R Jump-starting may be performe donly using batterie swithanominal voltag eof12V.
R Use only jump leads that have asufficient cross-section and insulated terminal clamps.
R If the battery is full ydischarged, leave the battery that is being used to jump-start connected for
af ew minutes before attempting to start. This charge sthe empty battery alittle.
R Make sure that the two vehicles do not touch.
Make sure that:
R The jump leads are not damaged.
R Non-insulated parts of the terminal clamp sdonot come into contact with other metal parts while
the jump leads are connected to the battery.
R The jump leads cannot come into contact with parts that can move when the engine is running,
such as the V-belt pulley or the fan.
X Apply the parking brake.
X Shift the automatic transmission to position P.
X Make sure that the ignitio nisswitched off. All indicator lamp sonthe instrument cluster must be
off.
X Switch off all electrica lconsumers, e.g. rear windo wheating, lighting etc.
X Open the bonnet. Position number
Bidentifies the charged battery of the other vehicle or an equivalent jump-starting
device.
The jump-startin gconnection point consists of contacts ;and =. 228
Jump-startingBreakdowna
ssistan ce

X
Lift up cover :of positive terminal ;in the direction of the arrow.
X Connect positive terminal ;on yourv ehicle to positive terminal ?of donor battery Busing the
jump lead, Alwaysb eginw ith positive terminal ;on youro wn vehicle first.
X Start the engine of the donor vehicle and run it at idling speed.
X Connect negative terminal Aof donor battery Bto earth point =of yourv ehicle using the jump
lead, connecting the jump leadtod onor batteryBfirst.
X Start the engine.
X Before disconnecting the jump leads, let the engines run for several minutes.
X First, remove the jump leads from earth point =and negative terminal A,then from positive
terminal ;and positive terminal ?.Each time, beginatt he contacts on youro wn vehicle.
X Close cover :of positive terminal ;after removing the jump leads.
X Have the battery checked at aqualifieds pecialist workshop.
Jump-starting is not considered to be anormal operating condition.
i Jump-starting cablesa
nd further information regarding jump-starting can be obtained at any
qualifieds pecialist workshop. Towinga
wayand tow-starting Importan
tsafety notes G
WARNING
Safety-relevant function sare restricted or not
available if:
R the engine is not running.
R the brake system or the power steering is
malfunctioning
R the voltag esupply or the vehicle's electrical
system is malfunctioning.
If yourv ehicleist owed,s ignificantly greater
force may be required to steer the vehicl eor
to brake. There is arisk of an accident.
In such circumstances, use atowing bar.
Make sure that the steering is moving freely
before towing. G
WARNING
If the steering whee llock is engaged, the vehi-
cle can no longer be steered .There is arisk of
an accident.
Always switch on the ignitio nwhen towing
with atow rope or atowing bar. G
WARNING
When towing or tow-starting another vehicle
and its weight is greater than the permissible gross weight of yourv ehicle, the:
R towing eye may be torn off
R car/trailer combination may swerve or
even overturn
There is arisk of an accident.
When towing or tow-starting another vehicle,
its weight should not be greater than the per- missible gross weight of yourv ehicle.
Detail sonthe permissible gross vehicl eweight
of yourv ehiclecan be found on the vehicl eiden-
tification plate (Y page249).
! You may tow the vehicl
efor am aximu mof
50km. Atowing spee dof50km/h must not
be exceeded.
For towing distances over 50 km, the entire
vehicl emust be lifted up and transported.
! Only secure the tow cabl
eortowing bar to
the towing eyes. You coul dotherwise damage
the vehicle.
! Observe the following points when towing
with atow rope:
R Secure the tow rope on the same side on
both vehicles.
R Make sure that the tow rope is not longer
than legally permitted. Mark the tow rope in the middle, e.g. with awhite cloth Towin
gawayand tow-starting
229Breakdown assis tance Z

In th
eevent of damage to th eengine,
transmission or electrical system X
Shift th etransfer cas etoneutral position
Neutral (Ypage 125).
X Shif tthe automatic transmissio ntoposition
N.
In the even tofdamage to the transfer
case Have the propeller shafts between the axles and
the transfe rcase removed.
In the event of damage to the front axle Have the propeller shaft between the rea
raxle
and the transfe rcase removed.
The nhavet he vehicle towe dawayw itht he front
axl eraised.
In the event of damage to the rear axle Have the propeller shaft between the front axle
and the transfe rcase removed.
The nhavet he vehicle towe dwitht he rea raxle
raised and wheel rollers unde rthe front axle. Tow-start
ing( em ergency engine
starting)
! Do not tow-start vehicles with automatic
transmission. Yo ucould otherwis edamage
the automatic transmission.
Yo uc an find informatio non"Jump-starting"
under (Y page 227). Fuses
Importan
tsafety notes G
WARNING
If yo umanipulate, bridge or replace afaulty
fuse with afuse of ahigher amperage ,the
electric cables coul dbeoverloaded. This may
result in afire. There is arisk of an accident
and injury.
Always replace faulty fuses with specified new fuses of the correct amperage. The fuses in your vehicle disconnect fault
ycir-
cuits. If afuse blows, all the components in the
circuit and their functions will fail.
Blown fuses must be replaced with fuses of the same rating, which you can recognise by the
colour and fuse rating. The fuse ratings are listed
in the fuse allocation chart (Y page 233).
If the newly inserted fuse also blows, have the
cause traced and rectified at aqualified special-
ist workshop, e.g. aMercedes-Benz Service
Centre.
! Only use fuses that have been approved for
Mercedes-Benz vehicles and which have the
correc tfuse rating for the system concerned.
Otherwise, components or systems could be
damaged.
! Make sure that no moisture can enter the
fuse box when the cover is open.
! When closing the cover, make sure that it is
lying correctly on the fuse box. Moisture seep-
ing in or dirt could otherwise impair the oper-
ation of the fuses. Bef
orer eplacing afuse
Observ ethe important safety notes
(Y page 232).
X Switch off the engine.
X Switch off al lelectrical consumers.
X Remove the key from the ignition lock.
All indicator lamps on the instrument cluster
must be off.
X Secure the vehicl eagain st rolling away
(Y page 113).
The fuses are locate dinvarious fus eboxes:
R Main fus eboxon the front-passenger side of
the dashboard
R Fus eboxin the front-passenger footwell
R Fus eboxin the transmission tunnel
R Fus eboxin the luggage compartment
The fus ealloc ation chart and the spare fuses are
in the fus eboxon the dashboard on the front-
passenger side (Y page 233).
The fus eextractor is in the vehicl etool kit
(Y page 223). 232
FusesBreakdo
wn assis tance

X
Stop the vehicl eonsolid,non-slipper yand
level ground.
X Appl ythe parking brake.
X Move the front wheel stothe straight-ahead
position.
X Shif tthe automatic transmissio ntoposition
P.
X Switch off the engine.
X Ifat raile risc oupled to the vehicle, uncouple
it.
X Remove the vehicl etool sand jack from the
vehicl e(Ypage 223).
X Remove the spare wheel from the spare wheel
bracket (Y page 223).
X Secure the vehicl eagains trolling away.
Securing the vehicle against rolling
away X
Place chocks or other suitable items under
the front and rea rofthe wheel that is diago-
nally opposite the wheel you wish to change.
Raising the vehicle G
WARNING
If you do not position the jack correctl yatthe
appropriate jacking point of the vehicle, the
jack coul dtip over with the vehicl eraised.
There is arisk of injury.
Only position the jack at the appropriate jack-
ing point of the vehicle. The base of the jack
must be positioned vertically,d irectly under
the jacking point of the vehicle.
! Only position the jack at the appropriate
jacking point of the vehicle. Otherwise, you
coul ddamage the vehicle.
Observe the following whenr aisingthe vehi-
cle:
R Use only the vehicle-specific jack that has
been tested and approved by Mercedes-Benz
to rais ethe vehicle. If the jack is used incor-
rectly, it coul dtip over while the vehicl eis
raised.
R The jack is designed only to rais ethe vehicle
for ashort time while awhee lisb eing
changed .Itisnot permissible to use it to per-
form maintenance work under the vehicle. R
Avoid changing the whee lonuphilland down-
hill slopes.
R Before raising the vehicle, secur eitagainst
rolling away by applying the parking brake and
positioning whee lchocks. Do not release the
parking brake whil ethe vehicl eisraised.
R The jack must be place donafirm, flatand
non-slip surface. On aloo se surface, alarge,
fla tload-beari ng underlay must be used .Ona
slippery surface, anon-slip underlay must be
used ,e.g.u se arubber matont iles.
R Do not us ewoode nblocks or similar objects
as ajack underlay .Otherwise, the jack will not
be able to achieve its load-bearing capacity
du etot he restricte dheight.
R Ensure tha tthe distance between the under-
side of the tyr eand the ground does not
exceed 3cm.
R Do not place your hands or fee tunder the
raised vehicle.
R Do not li eunder the raised vehicle.
R Do not start the engine when the vehicl eis
raised.
R Do not open or close adoorw hent he vehicle
is raised.
R Ensure tha tnopersons ar epresent in the
vehicl ewhenr aisin gthe vehicle. X
Using wheel wrench :,loosen the bolts on
the wheel you wish to change by abouto ne
full turn. Do not unscrew the bolts completely. 244
Changing
awheelWheels and tyres