2015 MERCEDES-BENZ G-Class ECU

Safety
Seat belts Problem
Possible causes/consequences and
M
MSolutions ü
After starting the
engine, the red seat
belt warning lamp lights
up for 6 seconds. The seat belt warning lamp reminds the driver and front passenger
to fasten their seat belts.
X Fasten your seat belt (Y page 44).ü
After starting the
engine, the red seat
belt warning lamp lights
up. In addition, a warn-
ing tone sounds for up
to 6 seconds. The driver's seat belt is not fastened.
X Fasten your seat belt (Y page 44).
The warning tone ceases. ü
The red seat belt warn-
ing lamp lights up after
the engine starts, as
soon as the driver's or
the front-passenger
door is closed.
The driver or front passenger has not fastened their seat belt.
X Fasten your seat belt (Y page 44).
The warning lamp goes out. There are objects on the front-passenger seat.
X Remove the objects from the front-passenger seat and stow
them in a secure place.
The warning lamp goes out. ü
The red seat belt warn-
ing lamp flashes and an
intermittent audible
warning sounds. The driver or front passenger has not fastened their seat belt. The
vehicle is being driven faster than 15 mph (25 km/h) or has briefly been driven faster than 15 mph (25 km/h).
X Fasten your seat belt (Y page 44).
The warning lamp goes out and the intermittent warning tone
ceases. There are objects on the front-passenger seat. The vehicle is being
driven faster than 15 mph (25 km/h) or has briefly been driven
faster than 15 mph (25 km/h).
X Remove the objects from the front-passenger seat and stow
them in a secure place.
The warning lamp goes out and the intermittent warning tone
ceases. Warning and indicator lamps in the instrument cluster
235On-board computer and displays Z

Safety systems
Problem
Possible causes/consequences and
M
MSolutions $
(USA only)
J (Canada only)
USA only: the red
brake system warning
lamp is lit while the
engine is running. A
warning tone also
sounds.
Canada only: the yel-
low brake system warn-
ing lamp is lit while the
engine is running. A
warning tone also
sounds. G
WARNING
The brake boosting effect is malfunctioning and the braking char- acteristics may be affected.
There is a risk of an accident.
X Pull over and stop the vehicle safely as soon as possible, paying
attention to road and traffic conditions. Do not continue driving
under any circumstances.
X Secure the vehicle against rolling away (Y page 150).
X Consult a qualified specialist workshop.
X Observe the additional display messages in the multifunction
display. $
(USA only)
J (Canada only)
USA only: the red
brake system warning
lamp is lit while the
engine is running. A
warning tone also
sounds.
Canada only: the yel-
low brake system warn-
ing lamp is lit while the
engine is running. A
warning tone also
sounds. There is not enough brake fluid in the brake fluid reservoir.
G WARNING
The braking effect may be impaired.
There is a risk of an accident. X Pull over and stop the vehicle safely as soon as possible, paying
attention to road and traffic conditions. Do not continue driving
under any circumstances.
X Secure the vehicle against rolling away (Y page 150).
X Do not add brake fluid. Adding more will not remedy the mal-
function.
X Consult a qualified specialist workshop.
X Observe the additional display messages in the multifunction
display. 236
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

Tires
Problem
Possible causes/consequences and
M
MSolutions h
USA only:
The yellow tire pressure
monitor warning lamp
(pressure loss/
malfunction) is lit.
Canada only:
The yellow tire pressure
monitor warning lamp
(pressure loss) is lit. The tire pressure monitor has detected a loss of pressure in at
least one of the tires.
G WARNING
With tire pressures which are too low, there is a risk of the fol-
lowing hazards:
R they may burst, especially as the load and vehicle speed
increase.
R they may wear excessively and/or unevenly, which may greatly
impair tire traction.
R the driving characteristics, as well as steering and braking, may
be greatly impaired.
There is a risk of an accident.
X Stop the vehicle without making any sudden steering or braking
maneuvers. Pay attention to the traffic conditions as you do so.
X Secure the vehicle against rolling away (Y page 150).
X Observe the additional display messages in the multifunction
display.
X If there is a flat tire, inspect the tires (Y page 292).
X Check the tire pressure (Y page 313).
X If necessary, correct the tire pressure. h
USA only:
The yellow tire pressure
monitor warning lamp
(pressure loss/
malfunction) flashes for
approximately one
minute and then
remains lit. The tire pressure monitor is faulty.
G WARNING
The system is possibly unable to recognize or register low tire
pressure.
There is a risk of an accident.
X Observe the additional display messages in the multifunction
display.
X Visit a qualified specialist workshop. 246
Warning and indicator lamps in the instrument clusterOn-board computer and displays

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
Transport loads when possible in the
cargo compartment. You should only use
the cargo compartment enlargement if the
load does not fit in the cargo compartment.
R Always place the load against the front or
rear seat backrests. If the rear bench seat is not occupied:
X Insert the belt tongue on the outer seat
belts into the buckle of opposite seat
belt :.
X Secure the load with sufficiently strong and
wear-resistant tie downs.
X Pad sharp edges for protection. Stowage areas
Stowage spaces
Important safety notes G
WARNING
If objects in the passenger compartment are
stowed incorrectly, they can slide or be
thrown around and hit vehicle occupants.
There is a risk of injury, particularly in the
event of sudden braking or a sudden change
in direction.
R Always stow objects so that they cannot be
thrown around in such situations.
R Always make sure that objects do not pro-
trude from stowage spaces, parcel nets or
stowage nets. R
Close the lockable stowage spaces while
driving.
R Stow and secure objects that are heavy,
hard, pointy, sharp-edged, fragile or too
large in the cargo compartment.
Observe the loading guidelines (Y page 248).
Stowage compartments in the front Glove box
X
To open: pull handle :and open glove box
flap ;.
X To close: fold glove box flap ;upwards
until it engages. 1
Glove box unlocked
2 Glove box locked
X To lock: insert the mechanical key into the
lock (Y page 69) and turn it 90° clockwise
to position 2.
X To unlock: insert the mechanical key into
the lock (Y page 69) and turn it 90° coun-
ter-clockwise to position 1. Stowage areas
249Stowage and features Z

Rear bench seat
Folding the rear bench seat forward
X
Fold rear seat backrest (Y page 251) for-
wards.
X Pull catch :in the direction of the arrow.
The corresponding rear bench seat is
released.
X Fold rear bench seat ;forwards. ;
Rear bench seat folded forward
Folding the rear bench seat into an
upright position 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.
X Fold the rear bench seat back.
The seat catch engages audibly.
X Fold the backrest backwards (Y page 251).
X Install the head restraints (Y page 88). Securing cargo
Important safety notes Distribute the load on the cargo tie-down
rings evenly.
Do not tamper with or repair cargo tie-down
points, cargo tie-down rings or tie downs.
Have maintenance work as well as modifica-
tions, installations and conversions carried
out at a qualified specialist workshop
(Y page 24).
Observe the following notes on securing
loads:
R Secure the load using the cargo tie-down
rings.
R Do not use elastic straps or nets to secure
a load, as these are only intended as an
anti-slip protection for light loads.
R Do not route tie-downs across sharp edges
or corners.
R Pad sharp edges for protection.
R Only use tie downs that have been checked
in accordance with applicable standards,
e.g. lashing nets or lashing straps.
R Fill the spaces between the load and the
cargo compartment walls and the wheel
housing in a form-locking way. Only use
dimensionally stable transportation aids 252
Stowage areasStowage and features

for this, such as chocks, wooden fixings or
padding.
Cargo tie-down rings in the cargo com-
partment There are four cargo tie-down rings
:in the
cargo compartment mounted at the sides. Cargo compartment cover
Important safety notes G
WARNING
On its own, the cargo compartment cover
cannot secure or restrain heavy objects,
items of luggage and heavy loads. You could
be hit by an unsecured load during sudden
changes in direction, braking or in the event of an accident. There is an increased risk of
injury or even fatal injury.
Always store objects so that they cannot be
flung around. Secure objects, luggage or
loads against slipping or tipping over, e.g. by
using tie downs, even if you are using the
cargo compartment cover.
! When loading the vehicle, make sure that
you do not stack the load in the cargo com-
partment higher than the lower edge of the side windows. Do not place heavy objects
on top of the cargo compartment cover.
The cargo compartment cover is located
behind the rear bench seat backrest. Opening and closing the cargo compart-
ment cover X
To open: pull cargo compartment cover :
back and clip it into the retainers on the left and right of the rear door.
X To close: unclip cargo compartment
cover :and guide it forwards until it is
completely rolled up.
Installing/removing the cargo compart- ment cover X
To remove: make sure that cargo com-
partment cover ;is rolled up.
X Slide catches :on the left-hand and right-
hand sides of cargo compartment cover ;
towards the center of the vehicle.
X Swing cargo compartment cover ;up and
out.
X To install: slide catches :towards the
center of the vehicle.
X Insert cargo compartment cover ;into
the recesses in the side trim. Stowage areas
253Stowage and features Z