2016 MERCEDES-BENZ G-Class engine

Safety
Seat belts
ProblemPossible causes/consequences and MSolutions
ü
After starting the engine,
the red seat belt warning
lamp lights up for six sec-
onds.The seat belt warning lamp reminds the driver and front passenger to
fasten their seat belts.
XFasten your seat belt (Ypage 38).
ü
After starting the engine,
the red seat belt warning
lamp lights up. In addi-
tion, a warning tone
sounds for up to six sec-
onds.The driver's seat belt is not fastened.
XFasten your seat belt (Ypage 38).
The warning tone ceases.
ü
The red seat belt warning
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.
XFasten your seat belt (Ypage 38).
The warning lamp goes out.
There are objects on the front-passenger seat.
XRemove the objects from the front-passenger seat and stow them in
a secure place.
The warning lamp goes out.
ü
The red seat belt warning
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).
XFasten your seat belt (Ypage 38).
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).
XRemove 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.
204Warning and indicator lamps in the instrument cluster
On-board computer and displays

Safety systems
ProblemPossible causes/consequences andMSolutions
$(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 yellow
brake system warning
lamp is lit while the
engine is running. A
warning tone also
sounds.GWARNING
The brake boosting effect is malfunctioning and the braking charac-
teristics may be affected.
There is a risk of an accident.
XPull over and stop the vehicle safely as soon as possible, paying
attention to road and traffic conditions. Do not continue driving
under any circumstances.
XSecure the vehicle against rolling away (Ypage 130).
XConsult a qualified specialist workshop.
XObserve the additional display messages in the multifunction dis-
play.
$ (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 yellow
brake system warning
lamp is lit while the
engine is running. A
warning tone also
sounds.There is not enough brake fluid in the brake fluid reservoir.
GWARNING
The braking effect may be impaired.
There is a risk of an accident.
XPull over and stop the vehicle safely as soon as possible, paying
attention to road and traffic conditions. Do not continue driving
under any circumstances.
XSecure the vehicle against rolling away (Ypage 130).
XDo not add brake fluid. Adding more will not correct the malfunc-
tion.
XConsult a qualified specialist workshop.
XObserve the additional display messages in the multifunction dis-
play.
Warning and indicator lamps in the instrument cluster205
On-board computer and displays
Z

ProblemPossible causes/consequences andMSolutions
!
The yellow ABS warning
lamp is lit while the
engine is running.ABS (Anti-lock Braking System) is deactivated due to a malfunction.
Other driving systems and driving safety systems may also be mal-
functioning.
GWARNING
The brake system continues to function normally, but without the
functions listed above. The wheels could therefore lock if you brake
hard, for example.
The steerability and braking characteristics may be severely affected.
The braking distance in an emergency braking situation can increase.
If ESP
®is not operational, ESP®is unable to stabilize the vehicle.
There is an increased risk of skidding and an accident.
XObserve the additional display messages in the multifunction dis-
play.
XDrive on carefully.
XVisit a qualified specialist workshop.
If the ABS control unit is faulty, there is also a possibility that other
systems, such as the navigation system or the automatic transmis-
sion, will not be available.
!
The yellow ABS warning
lamp is lit while the
engine is running.ABS is temporarily unavailable. BAS, ESP®, EBD (electronic brake
force distribution), the HOLD function, hill start assist, ESP®trailer
stabilization and the adaptive brake lights, for example, have also
been deactivated.
Possible causes are:
Rself-diagnosis is not yet complete.
Rthe on-board voltage may be insufficient.
GWARNING
The brake system continues to function normally, but without the
functions listed above. The wheels could therefore lock if you brake
hard, for example.
The steerability and braking characteristics may be severely affected.
The braking distance in an emergency braking situation can increase.
If ESP
®is not operational, ESP®is unable to stabilize the vehicle.
There is a risk of an accident.
XCarefully drive a suitable distance, making slight steering move-
ments at a speed above 12 mph (20 km/h).
The functions mentioned above are available again when the warn-
ing lamp goes out.
If the warning lamp is still on:
XObserve the additional display messages in the multifunction dis-
play.
XDrive on carefully.
XVisit a qualified specialist workshop.
206Warning and indicator lamps in the instrument cluster
On-board computer and displays

ProblemPossible causes/consequences andMSolutions
!
The yellow ABS warning
lamp is lit while the
engine is running. A
warning tone also
sounds.EBD is malfunctioning. Therefore, ABS, BAS, ESP®, the HOLD function,
hill start assist, adaptive brake lights and ESP®trailer stabilization, for
example, are also unavailable.
GWARNING
The brake system continues to function normally, but without the
functions listed above. The wheels could therefore lock if you brake
hard, for example.
The steerability and braking characteristics may be severely affected.
The braking distance in an emergency braking situation can increase.
If ESP
®is not operational, ESP®is unable to stabilize the vehicle.
There is an increased risk of skidding and an accident.
XObserve the additional display messages in the multifunction dis-
play.
XDrive on carefully.
XVisit a qualified specialist workshop.
!
The yellow ABS warning
lamp is lit while the
engine is running.You have engaged the differential locks. ABS is deactivated.
XDisengage the differential locks.
Subsequently ABS is reactivated.
$ (USA only)
J (Canada only)
÷!
The yellow brake warn-
ing lamp, the yellow
ESP
®warning lamp and
the yellow ABS warning
lamp are lit while the
engine is running.
ABS and ESP®are malfunctioning. BAS, EBD, the HOLD function, hill
start assist, the adaptive brake lights and ESP®trailer stabilization, for
example, are therefore unavailable.
GWARNING
The brake system continues to function normally, but without the
functions listed above. The front and rear wheels could therefore lock
if you brake hard, for example.
The steerability and braking characteristics may be severely affected.
The braking distance in an emergency braking situation can increase.
If ESP
®is not operational, ESP®is unable to stabilize the vehicle.
There is an increased risk of skidding and an accident.
XObserve the additional display messages in the multifunction dis-
play.
XDrive on carefully.
XVisit a qualified specialist workshop.
Warning and indicator lamps in the instrument cluster207
On-board computer and displays
Z

ProblemPossible causes/consequences andMSolutions
÷
The yellow ESP®warning
lamp flashes while the
vehicle is in motion.
ESP®or traction control has intervened because there is a risk of
skidding or at least one wheel has started to spin.
Cruise control or DISTRONIC PLUS is deactivated.
XWhen pulling away, only depress the accelerator pedal as far as
necessary.
XEase off the accelerator pedal while the vehicle is in motion.
XAdapt your driving style to suit the road and weather conditions.
XDo not deactivate ESP®.
For exceptions, see: (
Ypage 57).
å
The yellow ESP®OFF
warning lamp is lit while
the engine is running.
ESP®is deactivated.
GWARNING
If ESP
®is switched off, ESP®is unable to stabilize the vehicle.
There is an increased risk of skidding and an accident.
XReactivate ESP®.
For exceptions, see: (
Ypage 57).
XAdapt your driving style to suit the road and weather conditions.
If ESP
®cannot be activated:
XHave ESP®checked at a qualified specialist workshop.
֌
The yellow ESP®and
ESP®OFF warning lamps
are lit while the engine is
running.
ESP®, BAS, the HOLD function, hill start assist, the adaptive brake
lights and ESP®trailer stabilization are unavailable due to a malfunc-
tion.
GWARNING
The brake system continues to function normally, but without the
functions listed above.
The braking distance in an emergency braking situation can thus
increase.
If ESP
®is not operational, ESP®is unable to stabilize the vehicle.
There is an increased risk of skidding and an accident.
XObserve the additional display messages in the multifunction dis-
play.
XDrive on carefully.
XVisit a qualified specialist workshop.
208Warning and indicator lamps in the instrument cluster
On-board computer and displays

ProblemPossible causes/consequences andMSolutions
֌
The yellow ESP®and
ESP®OFF warning lamps
are lit while the engine is
running.
ESP®, BAS, the HOLD function, hill start assist and ESP®trailer sta-
bilization are temporarily unavailable.
BAS and the adaptive brake lights may also have failed.
Self-diagnosis is not yet complete.
GWARNING
The brake system continues to function normally, but without the
functions listed above.
The braking distance in an emergency braking situation can thus
increase.
If ESP
®is not operational, ESP®is unable to stabilize the vehicle.
There is an increased risk of skidding and an accident.
XCarefully drive a suitable distance, making slight steering move-
ments at a speed above 12 mph (20 km/h) .
The functions mentioned above are available again when the warn-
ing lamp goes out.
If the warning lamp is still on:
XObserve the additional display messages in the multifunction dis-
play.
XDrive on carefully.
XVisit a qualified specialist workshop.
å
The yellow ESP®OFF
warning lamp is lit while
the engine is running.
The differential lock is engaged. ABS, ESP®, 4ETS and BAS have been
deactivated.
XDisengage the differential lock.
ESP®, 4ETS and BAS are subsequently reactivated.
XObserve the additional display messages in the multifunction dis-
play.
(Canada only)
(USA only)
The red parking brake
warning lamp comes on
while the vehicle is mov-
ing. A warning tone also
sounds.You are driving with the parking brake applied.
XRelease the parking brake.
The warning lamp goes out and the warning tone ceases.
6
The red restraint system
warning lamp is lit while
the engine is running.The restraint system is faulty.
GWARNING
The air bags or Emergency Tensioning Devices may either be triggered
unintentionally or, in the event of an accident, may not be triggered.
There is an increased risk of injury.
XDrive on carefully.
XHave the restraint system checked at a qualified specialist work-
shop immediately.
For further information about the restraint system, see (
Ypage 34).
Warning and indicator lamps in the instrument cluster209
On-board computer and displays
Z

Engine
ProblemPossible causes/consequences andMSolutions
;
The yellow Check Engine
warning lamp lights up
while the engine is run-
ning.There may be a malfunction, for example:
Rin the engine management
Rin the fuel injection system
Rin the exhaust system
Rin the ignition system
Rin the fuel system
The emission limit values may be exceeded and the engine may be in
emergency mode.
XHave the vehicle checked as soon as possible at a qualified spe-
cialist workshop.
iIn some states, you must immediately visit a qualified specialist
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.
XRefuel 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.
XCheck that the fuel filler cap is correctly closed.
XIf the fuel filler cap is not correctly closed: close the fuel filler
cap.
XIf the fuel filler cap is closed: visit a qualified specialist workshop.
?
The red coolant warning
lamp lights up while the
engine is running and the
coolant temperature
gage is at the start of the
scale.The temperature sensor for the coolant temperature gage is defective.
The coolant temperature is no longer being monitored. There is a risk
of engine damage if the coolant temperature is too high.
XPull over and stop the vehicle safely and switch off the engine, pay-
ing attention to road and traffic conditions. Do not continue driving
under any circumstances.
XApply the parking brake.
XConsult a qualified specialist workshop.
210Warning and indicator lamps in the instrument cluster
On-board computer and displays

ProblemPossible causes/consequences andMSolutions
?
The red coolant warning
lamp comes on while the
engine is running.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 malfunctioning.
The coolant is too hot and the engine is no longer being cooled suffi-
ciently.
XObserve the additional display messages in the multifunction dis-
play.
XPull over and stop the vehicle safely and switch off the engine, pay-ing attention to road and traffic conditions.
XApply the parking brake.
XLeave the vehicle and keep a safe distance from the vehicle until the
engine has cooled down.
XCheck the coolant level and add coolant, observing the warning
notes (Ypage 238).
XIf you need to add coolant more often than usual, have the engine
coolant system checked.
XMake sure that the air supply to the engine radiator is not blocked,e.g. by snow, slush or ice.
XDo not start the engine again until the coolant temperature is below
248 ‡ (120 †). Otherwise, the engine could be damaged.
XDrive to the nearest qualified specialist workshop.
XAvoid subjecting the engine to heavy loads, e.g. driving in moun-
tainous terrain, and stop-start driving.
?
The red coolant warning
lamp comes on while the
engine is running. A
warning tone also
sounds.The coolant temperature has exceeded 248 ‡(120 †). The airflow to
the engine radiator may be blocked or the coolant level may be too
low.
GWARNING
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.
XObserve the additional display messages in the multifunction dis-
play.
XPull over and stop the vehicle safely and switch off the engine, pay- ing attention to road and traffic conditions.
XSecure the vehicle against rolling away (Ypage 130).
XLeave the vehicle and keep a safe distance from the vehicle until the
engine has cooled down.
XCheck the coolant level and add coolant, observing the warning
notes (Ypage 238).
Warning and indicator lamps in the instrument cluster211
On-board computer and displays
Z