2018 MERCEDES-BENZ G-CLASS SUV Owners Manual

*
NO
TEDama geor malfunctions caused
by moisture Moisture may cause dama
getothe electrical
sy stem or cause it tomalfunction. #
When the fuse box is open, make sure
th at no moisture can enter the fuse
box. #
When closing the fuse box, make sure
th at the seal of the lid is positioned cor‐
re ctly on the fuse box. If
th e newly inser ted fuse also blo ws, ha vethe
cause traced and rectified at a qualified special‐
ist workshop.
Ensure thefo llowing before replacing a fuse:
R The vehicle is secured against rolling away
R All electrical consumers are switched off
R The ignition is switched off
The electrical fuses are located in various fuse
bo xes:
R Fuse box in the engine compartment on the
left side (/ page 406) R
Fuse box on theright side of the cockpit
(/ page 407)
R Fuse box in there ar passenger compartment
(/ page 407) Opening and closing
the fuse box in the
engine compa rtment Re
quirements:
R A dry clo thand a sc rewdriver are available.
Obse rveth e no tes on electrical fuses
(/ page 405).
Opening &
WARNING Risk of inju ryfrom using the
windscreen wipers while the engine bon‐
net is open
When the engine bonn etis open, and the
windscreen wipers are set in motion, you can
be trapped bythe wiper linkage. #
Alw ays switch off the windscreen wip‐
ers and ignition before opening the
engine bonn et. #
Open the bonn et. #
Remo veany existing moisture from the fuse
box using a dry clo th. #
Loosen scr ews1. #
Fold out co ver2 inthe direction of the
ar row and remo veit. 406
Breakdown assis tance

Closing
#
Check whe ther the seal is positioned cor‐
re ctly in the lid. #
Place tabs 3 of co ver2 inthe fuse box. #
Ensure that co ver2 sits on the fuse box. #
Tighten scr ews1. #
Close the bonn et. Opening and closing
the fuse box in the
cockpit The fuse box is on
the side of the dashboard
under a co ver. #
Con tact a Mercedes-Benz Service Centre for
fur ther information. Opening and closing
the fuse box in there ar Obse
rveth e no tes on electrical fuses
(/ page 405). #
Foldtheright-hand seat cushion forw ard
(/ page 102). Fo
ld out and remo vecover1. Breakdown assi
stance 407

Note
s on noise or unusual handling charac‐
te rist ics
While driving, pay attention tovibrations, noises
and unusual handling characteristics, e.g. pulling
to one side. This may indicate that the wheels or
tyres are damaged. If you suspect that a tyre is
defective, reduce your speed immediatel y.Stop
th eve hicle as soon as possible tocheck the
wheels and tyres for dama ge. Hidden tyre dam‐
age could also be causing the unusual handling
ch aracteristics. If youfind no signs of damage,
ha ve the tyres and wheels checked at a qualified
specialist workshop. Note
s onregular lyinspecting wheels and
tyres &
WARNING Risk of accident from dam‐
aged tyres
Dama ged tyres can cause tyre pressure loss.
As a result, you could lose cont rol of your
ve hicle. #
Check the tyres regularly for signs of
dama geand replace any damaged tyres
immediatel y. Car
ryout thefo llowing checks on all wheels reg‐
ularly, at least once a month or as requ ired, e.g.
prior toa long journey or driving off- road:
R Check the tyre pressure (/ page 409).
R Visually inspect tyres and wheels for dam‐
age.
R Check theva lve caps.
The valves must be pr otected against mois‐
ture and dirt bytheva lve caps appr oved
especially foryo ur vehicle byMercedes-Benz.
R Visual check of the tyre tread dep thand the
tyre contact su rface across the entire width.
The minimum tread dep thfor summer tyres
is 3 mm and for winter tyres 4 mm. Note
s on snow chains
* NO
TEDama getocomponents of the
ve hicle body or chassis due tofitted
snow chains If
yo ufit snow chains tothe front wheels of
4MATIC vehicles, you may damage co mpo‐
nents of theve hicle body or chassis. #
Onlyfit snow chains tothere ar wheels
of 4MATIC vehicles. The no
tes on using snow chain-compatible AMG
winter tyres apply toAMG tyres. Snow chains
are permit tedfo r use only with these.
R Snow chains are on ly permissible for cer tain
wheel/tyre combinations. You can obtain
information about this from a Mercedes-Benz
Service Cent re.
R For saf etyre asons, on lyuse sn ow chainsthat
ha ve been specifically appr ovedfo ryo ur
ve hicle byMercedes-Benz, or snow chains
with the same quality standard.
R If sn ow ch ains are fitted, the maximum per‐
missible speed is 50 km/h. 408
Wheels and tyres

R
Vehicles with Active Parking Assis t:do
not use Active Parking Assist when snow
ch ains are fitted.
% You can permanently limit the maximum
ve hicle speed for driving with winter tyres
(/ page 190).
% You can deactivate ESP ®
to pull away . This
allo ws th e wheels tospin, achieving an
increased driving forc e. Ty
re pressure Note
s on tyre pressure &
WARNING Risk of accident due toinsuf‐
fi cient or excessive tyre pressure
Underinfla ted or overinfla ted tyres pose the
fo llowing risks:
R The tyres may bur st, especially as the
load and vehicle speed increase. R
The tyres may wearexc essively and/or
une venly, which may greatlyimpair tyre
traction.
R The driving characteristics, as well as
st eering and braking, may be greatly
impaired. #
Comply with there commended tyre
pressure and check the tyre pressure of
all tyres including the spare wheel regu‐
larly:
R at least once a month
R when the load changes
R before embarking on a lon ger journey
R if operating conditions change, e.g. off-
ro ad driving #
Adjust the tyre pressure as necessar y. Driving wi
thtyre pressu rethat is too high or too
low can:
R Sho rten the service life of the tyres.
R Cause increased tyre damage. R
Adversely af fect driving characteristics and
th us driving saf ety, e.g. due toaquaplaning. &
WARNING Risk of accident from repea‐
te d tyre pressure drop
If th e tyre pressure drops repeatedl y,the
wheel, valve or tyre may be damaged.
Insuf ficient tyre pressure can cause the tyres
to bur st. #
Inspect the tyre for signs of fore ign
objects. #
Check whe ther the wheel or valve has a
leak. #
Ifyo u are unable torectify the damage,
conta ct aqualified specialist workshop. Information on
there commended tyre pressure
fo rth eve hicle's factor y-fitted tyres can be found
on the tyre pressure table on the inside of the
fuel filler flap (/ page410).
Use a sui table pressure gauge tocheck the tyre
pressure. The outer appearance of a tyre does
not permit any reliable conclusion about the tyre
pressure. Wheels and tyres
409

Ve
hicles with a tyre pressure monitoring sys‐
te m: you can also check the tyre pressure using
th e on-board computer.
Only cor rect tyre pressures when the tyres are
cold. Conditions for cold tyres:
R The vehicle has been par ked with the tyres
out of direct sunlight for at least thre e hours.
R The vehicle has tr avelled less than 1.6 km.
A rise in the tyre temp erature of 10°C increases
th e tyre pressure byappr ox.10 kPa (0.1 bar/
1. 5 psi). Take this into account when checking
th e tyre pressure of warm tyres.
Tr ailer operation no tes
Alw ays inflate there ar axle tyres tothere com‐
mended tyre pressures on the tyre pressure
ta ble for increased load.
Note s on driving on sand
When driving on sand, you can lo werth e tyre
pressure (/ page145). Ty
re pressure table The tyre pressure
table is on the inside of the
fuel filler flap. The tyre pressure
table sho ws there commended
tyre pressure for all tyres appro vedfo rth is vehi‐
cle. The recommended tyre pressures apply for
cold tyres under various operating conditions,
i.e. loading and/or speed of theve hicle.
If one or more tyre sizes precede a tyre pres‐
sure, the tyre pressure information following is
only valid forth ose tyre sizes.
If th e preceding tyre sizes are complemented by
th e+ symbol, the tyre pressure information fo
llowing sho wsalternative tyre pressures.
These tyre pressures may impr oveyour vehicle's
ri de comfort. Fuel consum ption may then
increase slightl y.
The load conditions "partially laden" and "fully
laden" are defined in theta ble for dif fere nt num‐
be rs of passengers and amounts of luggage. The
actual number of seats may dif fer from this.
Make sure toobser vethefo llowing fur ther rela‐
te d subjec t:
R Notes on tyre pressure (/ page 409) Ty
re pressure moni toring sy stem Fu
nction of the ty repressure moni toring sys‐
tem
The sy stem checks the tyre pressure and the
tyre temp erature of the tyres fitted totheve hicle
by means of a tyre pressu resensor.
New tyre pressure sensors, e.g. in winter tyres,
are automatically taught-in during thefirs t jour‐
ney they are used. 41 0
Wheels and tyres

The tyre pressure and
the tyre temp erature
appear in the multifunction display
(/ page 411).
If th ere is a subs tantial pressure loss or if the
tyre temp erature is excessive, you will be
wa rned in thefo llowing ways:
R via display messa ges
( / page
47 4)
R viatheh warning lamp in the instrument
clus ter (/ page 502)
The tyre pressu remonitoring sy stem is only an
aid. It is the driver's responsibility toset the tyre
pressure tothere commended cold tyre pressure
suitable forth e operating situation. Set the tyre
pressure for cold tyres using a tyre pressu re
ga uge. No tethat the cor rect tyre pressure for
th e cur rent operating situation mu stfirs t be
ta ught-in tothe tyre pressure monitoring sys‐
te m.
In most cases, the tyre pressure monitoring sys‐
te m will auto maticallyupdate the new refere nce
va lues af teryo u ha vechanged the tyre pressure.
Yo u can, ho wever,also update there fere nce val‐ ues
byrestarting the tyre pressure monitoring
sy stem manually (/ page412).
Sy stem limitations
The sy stem may be impaired or may not function
in thefo llowing situations:
R ifth e tyre pressure is set incor rectly
R ifth ere is a sudden pressure loss caused, for
ex ample, byafo re ign object penetrating the
tyre
R ifth ere is a malfunction caused byano ther
ra dio signal source
Make sure toobser vethefo llowing fur ther rela‐
te d subjec t:
R notes on tyre pressure (/ page 409)
Checking the ty repressure with the tyre
pressure moni toring sy stem
Requ irements:
R The ignition is switched on. On-board computer:
4 Service 5
Tyres
One of thefo llowing displa ysappears:
R Cur rent tyre pressure and tyre temp erature
of the individual wheels: R
Tyre pressures will be displayed after a few
minutes of driving
R Tyre pressure monitor active: thete ach-in
process of the sy stem is not yet compl ete.
The tyre pressures are already being moni‐
to re d. Wheels and tyres
411

The
teach-in process take s longer if you ha ve
engaged the dif fere ntial lo cks. Check the tyre
pressure again at a later date. #
Compare the tyre pressure with there com‐
mended tyre pressure forth e cur rent operat‐
ing condition (/ page 410). Obse rvethe
no tes on tyre temp erature (/ page 409).
% The values displa yed in the multifunction dis‐
play may deviate from those of the tyre pres‐
sure gauge as they referto sea le vel.At high
altitudes, the tyre pressure values indicated
by a pressure gauge are higher than those
shown bythe on-board computer. In this
case, do not reduce the tyre pressure.
Make sure toobser vethefo llowing fur ther rela‐
te d subjec t:
R Notes on tyre pressure (/ page 409)
Rest arting the ty repressure moni toring sys‐
tem
Requ irements:
R The recommended tyre pressure is cor rectly
set forth ere spective operating status on
each of thefo ur wheels (/ page 409). Re
start the tyre pressure monitoring sy stem in
th efo llowing situations:
R The tyre pressure has changed.
R The wheels or tyres ha vebeen changed or
newly fitted.
On-boa rdcompu ter:
4 Service 5
Tyres #
Swipe down wards on Touch Control on the
left-hand side of thesteering wheel.
The Use current tyre pressures as new refer-
ence values? message is shown in the multi‐
function displa y. #
Tobegin restart, press Touch Control on the
left-hand side of thesteering wheel.
The Tyre press. monitor restarted message is
shown in the multifunction displa y.
Cur rent wa rning messages are dele ted and
th eye llow h warning lamp goes out.
Af teryo u ha vebeen driving for a few
minutes, the sy stem checks whe ther the cur‐
re nt tyre pressures are wi thin the specified
ra nge. The cur rent tyre pressures are then
accep ted as refere nce values and monitored. Make sure
toobser vethefo llowing fur ther rela‐
te d subjec t:
R Notes on tyre pressure (/ page 409)412
Wheels and tyres

Ra
dio equipment appr oval of the ty repres‐
sure moni toring sy stem
Ra dio equipment appr oval numbers Countr
yRadio equipment appr oval
number
Ar ge ntina Schrader AG5SP4
Numero de Registro CNC:
H-1 4795
Brazil MODELO:
AG5SP4-D
AN ATEL: 0280-15-8001
Es te equipamento opera em
caráter secundário, is toé, não
te m direito à pr oteção contrain‐
te rferência prejudicial, mesmo de
es tações do mesmo tipo e não
pode causar inter ferê ncia a si ste‐
mas operando em caráter pri‐
mário. Countr
yRadio equipment appr oval
number
European
Union Hereb
y,Schrader Electronics Ltd
declares that thera dio equip‐
ment type "AG5SP4 & MFR" is in
compliance with Directive
20 14 /53/EU.
The full text of the EU declaration
of confo rmity is available at the
fo llowing internet address:
http://www.tpmseuro‐
shop.com/documents/declara‐
tion_conformities
GG4: f = 433.92MHz; Maximum
ef fective radiated P < 10mw
(e.r.p)
MFR recei ver:Category II
Schrader Elect ronics Ltd. 11
Te ch nology Park, Count
ryRadio equipment appr oval
number
Belfast Road, Antrim BT41 1QS,
Nor thern Ireland United Kingdom
Indonesia 38892/SDPPI/20 15
Jordan Kingdom of Jordan Type appr oval
fo rTy re Pressure sensor.
Manufacturer: Schrader Elect ron‐
ics Ltd.
Model: AG5SP4
Ty pe Appr oval Numb er:
TRC/LPD/20 15/21
MFR
Ty pe Appr oval Numb er:
TRC/LPD/20 15/223 Wheels and tyres
413