2015 MERCEDES-BENZ G-Class engine

Engine
Problem
Possible causes/consequences and
M
MSolutions ;
The yellow Check
Engine warning lamp
lights up while the
engine is running.
There may be a malfunction, for example:
R in the engine management
R in the fuel injection system
R in the exhaust system
R in the ignition system
R in the fuel system
The emission limit values may be exceeded and the engine may be
in emergency mode.
X Have the vehicle checked as soon as possible at a qualified
specialist workshop.
i In some states, you must immediately visit a qualified special-
ist workshop as soon as the yellow Check Engine warning lamp
lights up. This is due to the legal requirements in effect in these
states. If in doubt, check whether such legal regulations apply in the state in which you are currently driving. 8
The yellow reserve fuel
warning lamp lights up
while the engine is run-
ning.
The fuel level has dropped into the reserve range.
X Refuel at the nearest gas station. 8
The yellow reserve fuel
warning lamp flashes
while the vehicle is in
motion.
In addition, the
;
Check Engine warning
lamp may light up. The fuel system pressure is too low. The fuel filler cap is not closed
correctly or the fuel system is leaking.
X Check that the fuel filler cap is correctly closed.
X If the fuel filler cap is not correctly closed: close the fuel filler
cap.
X If the fuel filler cap is closed: visit a qualified specialist work-
shop. ?
The red coolant warn-
ing lamp lights up while
the engine is running
and the coolant tem-
perature gage is at the
start of the scale. The temperature sensor for the coolant temperature gage is defec-
tive.
The coolant temperature is no longer being monitored. There is a risk of engine damage if the coolant temperature is too high.
X Pull over and stop the vehicle safely and switch off the engine,
paying attention to road and traffic conditions. Do not continue
driving under any circumstances.
X Apply the parking brake.
X Consult a qualified specialist workshop. Warning and indicator lamps in the instrument cluster
243On-board computer and displays Z

Problem
Possible causes/consequences and
M
MSolutions ?
The red coolant warn-
ing lamp comes on
while the engine is run-
ning.
The coolant level is too low.
! Avoid making long journeys with too little coolant in the engine
cooling system. The engine will otherwise be damaged.
If the coolant level is correct, the airflow to the engine radiator may be blocked or the electric engine radiator fan may be malfunc-
tioning.
The coolant is too hot and the engine is no longer being cooled
sufficiently.
X Observe the additional display messages in the multifunction
display.
X Pull over and stop the vehicle safely and switch off the engine,
paying attention to road and traffic conditions.
X Apply the parking brake.
X Leave the vehicle and keep a safe distance from the vehicle until
the engine has cooled down.
X Check the coolant level and add coolant, observing the warning
notes (Y page 278).
X If you need to add coolant more often than usual, have the
engine coolant system checked.
X Make sure that the air supply to the engine radiator is not
blocked, e.g. by snow, slush or ice.
X Do not start the engine again until the coolant temperature is
below 248 ‡(120 †). Otherwise, the engine could be damaged.
X Drive to the nearest qualified specialist workshop.
X Avoid subjecting the engine to heavy loads, e.g. driving in moun-
tainous terrain, and stop-start driving. ?
The red coolant warn-
ing lamp comes on
while the engine is run-
ning. A warning tone
also sounds. The coolant temperature has exceeded 248 ‡ (120 †). The air-
flow to the engine radiator may be blocked or the coolant level may
be too low.
G WARNING
The engine is not being cooled sufficiently and may be damaged.
Do not drive when your engine is overheated. This can cause some
fluids which may have leaked into the engine compartment to
catch fire.
Steam from the overheated engine can also cause serious burns
which can occur just by opening the hood.
There is a risk of injury. 244
Warning and indicator lamps in the instrument clusterOn-board computer and displays

Problem
Possible causes/consequences and
M
MSolutions X
Observe the additional display messages in the multifunction
display.
X Pull over and stop the vehicle safely and switch off the engine,
paying attention to road and traffic conditions.
X Secure the vehicle against rolling away (Y page 150).
X Leave the vehicle and keep a safe distance from the vehicle until
the engine has cooled down.
X Check the coolant level and add coolant, observing the warning
notes (Y page 278).
X If you need to add coolant more often than usual, have the
engine coolant system checked.
X Make sure that the air supply to the engine radiator is not
blocked, e.g. by snow, slush or ice.
X At coolant temperatures below 248 ‡ (120 †), drive to the
nearest qualified specialist workshop.
X Avoid subjecting the engine to heavy loads, e.g. driving in moun-
tainous terrain, and stop-start driving. Driving systems
Problem
Possible causes/consequences and
M MSolutions ·
The red distance warn-
ing lamp lights up while
the vehicle is in motion. The distance to the vehicle in front is too small for the speed
selected.
X Increase the distance. ·
The red distance warn-
ing lamp lights up while
the vehicle is in motion. A warning tone also
sounds. You are approaching a vehicle or a stationary obstacle in your line
of travel at too high a speed.
X Be prepared to brake immediately.
X Pay careful attention to the traffic situation. You may have to
brake or take evasive action.
Further information on DISTRONIC PLUS (Y page 169).Warning and indicator lamps in the instrument cluster
245On-board computer and displays Z

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). Loading guidelines
G
WARNING
If objects, luggage or loads are not secured or not secured sufficiently, they could slip, tip
over or be flung around and thereby hit vehicle
occupants. There is a risk of injury, particu-
larly in the event of sudden braking or a sud-
den change in direction.
Always store objects so that they cannot be
flung around. Secure objects, luggage or
loads against slipping or tipping before the
journey. G
WARNING
If you distribute the load unevenly in the vehi- cle, the handling as well as the steering and
braking characteristics are severely affected.
There is a risk of an accident.
Distribute the load evenly in the vehicle.
Secure the load to prevent it from slipping. G
WARNING
Combustion engines emit poisonous exhaust
gases such as carbon monoxide. If the tail-
gate/rear door is open when the engine is
running, particularly if the vehicle is moving,
exhaust fumes could enter the passenger
compartment. There is a risk of poisoning. Turn off the engine before opening the tail-
gate/rear door. Never drive off with the tail-
gate/rear door open. Driving, braking and steering characteristics
change depending on:
R type of load
R weight
R the center of gravity of the load
You should therefore load your vehicle as
shown in the illustrations.
The gross vehicle weight (GVW) is the vehicle
weight including fuel, vehicle tool kit, spare
wheel, accessories installed, vehicle occu-
pants and luggage/load.
Do not exceed the load limit or permitted
gross vehicle weight rating (GVWR) for your
vehicle. The gross load limit and the GVWR
are specified on the vehicle identification
plate on the B-pillar of the driver's door
(Y page 336).
The load must also be distributed so that the weight on each axle never exceeds the grossaxle weight rating (GAWR) for the front and
rear axles. The specifications for GVWR and
GAWR are on the vehicle identification plate
on the B-pillar of the driver's door
(Y page 336).
Further information can be found in the
"Loading the vehicle" section (Y page 316).
Observe the following notes when transport-
ing a load:
R Position heavy loads as far forwards as pos-
sible and as low down in the cargo com-
partment as possible. 248
Loading guidelinesStowage and features

i
The glove box can only be locked and
unlocked using the mechanical key.
Door stowage compartment
There is an additional compartment located
on the driver's door paneling, which can be
used to store a mini tablet PC, for example.
Stowage compartment/telephone com-
partment under the armrest/in the center
console :
Small stowage compartment
; Release button for the armrest
Stowage compartment/telephone compart-
ment under the armrest
X To open: press release button ;.
X Fold up armrest.
i In the stowage compartment, there is a
stowage tray.
X To close: fold the armrest down.
The armrest engages audibly.
Stowage space in the rear Storage pockets
G
WARNING
Storage bags are intended for storing light-
weight items only.
Heavy objects, objects with sharp edges or
fragile objects may not be transported in the
storage bag. In an accident, during hard brak-
ing, or sudden maneuvers, they could be
thrown around inside the vehicle and cause
injury to vehicle occupants. Storage bags cannot protect transported
goods in the event of an accident.
The stowage pockets are located on the rear side of the front seats. Stowage nets
The stowage net is in the front-passenger
footwell.
Observe the loading guidelines (Y page 248)
and the safety notes regarding stowage
spaces (Y page 249). Cargo compartment enlargement
Important safety notes G
WARNING
If the rear bench seat/rear seat and seat
backrest are not engaged they could fold for- wards, e.g. when braking suddenly or in the
event of an accident.
R The vehicle occupant would thereby be
pushed into the seat belt by the rear bench
seat/rear seat or by the seat backrest. The
seat belt can no longer offer the intended
level of protection and could even cause
injuries.
R Objects or loads in the trunk/cargo com-
partment cannot be restrained by the seat
backrest.
There is an increased risk of injury.
Before every trip, make sure that the seat
backrests and the rear bench seat/rear seat
are engaged. G
WARNING
Combustion engines emit poisonous exhaust
gases such as carbon monoxide. If the tail-
gate/rear door is open when the engine is
running, particularly if the vehicle is moving,
exhaust fumes could enter the passenger
compartment. There is a risk of poisoning. 250
Stowage areasStowage and features

Turn off the engine before opening the tail-
gate/rear door. Never drive off with the tail-
gate/rear door open.
! Ensure that you remove all containers
from the cup holder in the rear before fold-
ing the seat backrest and the seat cushion of the rear bench seat forwards.
Observe the loading guidelines (Y page 248).
The rear bench seat is split symmetrically.
The left-hand and right-hand rear bench seats
can be folded forward to increase the capa-
city of the rear compartment. The following
changes are possible:
R fold the seat backrests forward
R fold the rear bench seat back fully
Folding the seat backrest forward To fold forward the seat backrests, proceed
as follows:
X Open the rear doors.
This allows you better access to release
lever :.
X Remove the center head restraint
(Y page 88).
X Pull catch :in the direction of the arrow.
The corresponding rear seat backrest is not
engaged.
X Fold the backrest forwards.
The rear seat backrest engages audibly. ;
Backrest folded forward
Folding the seat backrest back !
Make sure that the seat belt does not
become trapped when folding the rear seat backrest back. Otherwise, it could be dam- aged. X
Pull release lever :.
The corresponding seat backrest is
released.
X Fold backrest ;backwards in the direc-
tion of the arrow.
The seat catch engages audibly.
X Install the head restraint (Y page 88). Stowage areas
251Stowage and features Z

blinded by incident light. There is a risk of an
accident.
Always keep the mirror cover folded down
while driving. :
Sun visor
; Bracket
= Mirror cover
? Mirror light
Vanity mirror in the sun visor :
Sun visor
; Bracket
= Mirror cover
? Mirror light
Mirror lights ?will only function if sun
visor :is clipped into bracket ;.
X Fold down sun visor :.
X Fold up mirror cover =.
Mirror lights ?are switched on automati-
cally. Glare from the side
:
Sun visor
; Bracket
= Mirror cover
? Mirror light
X Fold down sun visor :.
X Pull sun visor :from bracket ;.
X Swing sun visor :to the side. Stowage compartment/ashtray
Stowage compartment/ashtray in the
center console G
WARNING
If you engage transmission position Dwhen
removing the ashtray insert, the vehicle can
roll away. There is a risk of an accident.
Always switch off the engine first and safe-
guard the vehicle against rolling away by
applying the parking brake. :
Cover
; Insert Features
255Stowage and features Z

i
On new vehicles, insert
;is stored in the
glove box. Install 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 install the insert: install insert;from
above.
X Push insert ;down.
Insert ;audibly engages.
X To close: close cover :fully.
i The ashtray is lit up if the low-beam head-
lamps are on.
Ashtray in the rear compartment 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 install the insert: install insert=from
above.
X To close: close cover ;fully. Cigarette lighter
G
WARNING
You can burn yourself if you touch the hot
heating element or the socket of the cigarette lighter.
In addition, flammable materials can ignite if:
R the hot cigarette lighter falls
R a child holds the hot cigarette lighter to
objects, for example
There is a risk of fire and injury.
Always hold the cigarette lighter by the knob.
Always make sure that the cigarette lighter is
out of reach of children. Never leave children unsupervised in the vehicle.
! The 12 V socket in the cigarette lighter
can be used for accessories (up to a maxi-
mum of 180 W), as long as they have the
standard socket type for cigarette lighters.
Note that the socket in the cigarette lighter can be damaged when connecting acces-
sories, for example by:
R frequent insertion and removal
R sockets that do not fit correctly
A damaged socket can cause the cigarette
lighter to stop working. X
Press in cigarette lighter :.
Cigarette lighter :will pop out automati-
cally when the heating element is red-hot. 256
FeaturesSto
wage an d features