2016 MERCEDES-BENZ G-Class radiator

ProblemPossible causes/consequences andMSolutions
The coolant temperature
gage shows a value
above 248 ‡ (120 †). A
display message may
also appear in the multi-
function display and a
warning tone may sound.The coolant level is too low. The coolant is too hot and the engine is no
longer being cooled sufficiently.
XStop as soon as possible and allow the engine and the coolant to
cool down.
XCheck the coolant level (Ypage 238). Observe the warning notes
as you do so and add coolant if necessary.
If the coolant level is correct, the radiator fan may be faulty. The cool-
ant is too hot and the engine is no longer being cooled sufficiently.
XAt coolant temperatures below 248 ‡(120 †), drive to the nearest
qualified specialist workshop.
XAvoid heavy loads on the engine as you do so, e.g. driving in moun-
tainous terrain and stop-and-go traffic.
Adjustable damping
General notes
With the adjustable damping you can choose
between two different suspension settings.
Suspension settings
COMFComfortable suspension setting
SportSports suspension setting
Selecting the suspension setting
Program selector button in the center console
iIf you select the sports suspension setting,
the vehicle will dampen more roughly.
XPress SPORT on program selector button :.
The indicator lamp lights up. SPORTis shown
in the multifunction display. The sports sus-
pension setting is selected.
iIf you select the comfortable suspension
setting, the vehicle will dampen more
smoothly.
XPress COMF on program selector button :.
The indicator lamp lights up. COMFis shown
in the multifunction display. The comfortable
suspension setting is selected.
Automatic transmission
Important safety notes
GWARNING
If the engine speed is above the idling speed
and you engage transmission position Dor R,
the vehicle could pull away suddenly. There is
a risk of an accident.
When engaging transmission position Dor R,
always firmly depress the brake pedal and do not simultaneously accelerate.
GWARNING
The automatic transmission switches to neu-
tral position Nwhen you switch off the engine.
The vehicle may roll away. There is a risk of an
accident.
After switching off the engine, always switch
to parking position P. Prevent the parked vehi-
cle from rolling away by applying the parking
brake.
118Automatic transmission
Driving and parking

Engine
Display messagesPossible causes/consequences andMSolutions
+
Check CoolantLevel. See Opera‐tor's Manual
The coolant level is too low.
XAdd coolant, observing the warning notes before doing so
(Ypage 238).
XHave the coolant system checked at a qualified specialist workshop
if the coolant needs topping up more often than usual.
?The fan motor is faulty.
XAt coolant temperatures below 248 ‡(120 †), drive to the nearest
qualified specialist workshop.
XAvoid heavy loads on the engine as you do so, e.g. driving in moun-
tainous terrain and stop-start traffic.
?
Coolant Too HotStopVehicleSwitchEngine Off
The coolant is too hot.
A warning tone also sounds.
GWARNING
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.
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.
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 display message goes out and
the coolant temperature is below 248 ‡ (120 †). Otherwise, the
engine could be damaged.
XPay attention to the coolant temperature display.
XIf the temperature increases again, visit a qualified specialist work-
shop immediately.
Under normal operating conditions and with the specified coolant
level, the coolant temperature may rise to 248 ‡ (120 †).
192Display messages
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

ProblemPossible causes/consequences andMSolutions
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.
XAt coolant temperatures below 248 ‡(120 †), drive to the nearest
qualified specialist workshop.
XAvoid subjecting the engine to heavy loads, e.g. driving in moun-
tainous terrain, and stop-start driving.
Driving systems
ProblemPossible causes/consequences and MSolutions
·
The red distance warning
lamp lights up while the
vehicle is in motion.The distance to the vehicle in front is too small for the speed selected.
XIncrease the distance.
·
The red distance warning
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.
XBe prepared to brake immediately.
XPay careful attention to the traffic situation. You may have to brake
or take evasive action.
Further information on DISTRONIC PLUS (
Ypage 147).
212Warning and indicator lamps in the instrument cluster
On-board computer and displays

Useful information
i
This Operator's Manual describes all models
and all standard and optional equipment of
your vehicle available at the time of publica-
tion of the Operator's Manual. Country-spe-
cific 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.
iRead the information on qualified specialist
workshops: (Ypage 23).
Engine compartment
Hood
Important safety notes
GWARNING
If the hood is unlatched, it may open up when the vehicle is in motion and block your view.
There is a risk of an accident.
Never unlatch the hood while driving. Before
every trip, ensure that the hood is locked.
GWARNING
Certain components in the engine compart-
ment may be very hot, e.g. the drive system
and radiator. Working in the engine compart-
ment poses a risk of injury.
If possible, let the drive system cool down and only touch the components described in the
following.
GWARNING
Opening the hood when the engine is over-
heated or when there is a fire in the engine
compartment could expose you to hot gases
or other service products. There is a risk of
injury.
Let an overheated engine cool down before
opening the hood. If there is a fire in the
engine compartment, keep the hood closed
and contact the fire department.
GWARNING
The ignition system and the fuel injection sys-
tem work under high voltage. If you touch
components which are under voltage, you
could get an electric shock. There is a risk of
injury.
Never touch components of the ignition sys-
tem or fuel injection system when the ignition
is switched on.
GWARNING
The engine compartment contains moving
components. Certain components, such as
the radiator fan, may continue to run or start
again suddenly when the ignition is off. There is a risk of injury.
If you need to do any work inside the engine
compartment:
Rswitch off the ignition
Rnever reach into the area where there is a
risk of danger from moving components,
such as the fan rotation area
Rremove jewelry and watches
Rkeep items of clothing and hair, for exam-
ple, away from moving parts
GWARNING
When the hood is open and the windshield
wipers are set in motion, you can be injured by
the wiper linkage. There is a risk of injury.
Always switch off the windshield wipers and
the ignition before opening the hood.
!Make sure that the windshield wipers are
not folded away from the windshield. You
could otherwise damage the windshield wip-
ers or the hood.
Do not touch the following when the ignition is
switched on:
Rignition coils
Rspark plug connectors
Rtest socket
Engine compartment235
Maintenance and care
Z

Opening the hood
The release lever on the hood is in the footwell
on the left-hand side of the vehicle when viewed
in the direction of travel.
XMake sure that the windshield wipers are
switched off.
XPull release lever:on the hood.
The hood is released.
XLift the hood slightly.
XPush the handle of hood catch ;in the direc-
tion of the arrow and lift the hood.
Closing the hood
GWARNING
If the hood is unlatched, it may open up when the vehicle is in motion and block your view.
There is a risk of an accident.
Never unlatch the hood while driving. Before
every trip, ensure that the hood is locked.
XLower the hood and let it fall from a height of
approximately 8 inches (20 cm).
XCheck that the hood has engaged properly.
If the hood can be raised slightly, it is not
properly engaged. Open it again and close it
with a little more force.
Engine oil
General notes
Depending on your driving style, the vehicle
consumes up to 0.9 US qt (0.8 liters) of oil per
600 miles (1000 km). The oil consumption may
be higher than this when the vehicle is new or if
you frequently drive at high engine speeds.
Checking the oil level using the oil dip-
stick
GWARNING
Certain components in the engine compart-
ment, such as the engine, radiator and parts
of the exhaust system, can become very hot.
Working in the engine compartment poses a
risk of injury.
Where possible, let the engine cool down and touch only the components described in the
following.
Example: oil dipstick
On the G 63 AMG, the oil level can be checked
using the oil dipstick.
236Engine compartment
Maintenance and care

When checking the oil level:
Rpark the vehicle on a level surface.
Rthe engine should be switched off for approx-
imately five minutes if the engine is at normal
operating temperature.
Rthe engine should be switched off for at least
30 minutes if the engine is not at operating
temperature, e.g. if you only start the engine
briefly.
XPull oil dipstick :out of the dipstick guide
tube.
XWipe off oil dipstick :.
XSlowly slide oil dipstick :into the guide tube
to the stop, and take it out again.
If the level is between MIN mark =and MAX
mark ;, the oil level is correct.
XAdd oil if necessary.
On all other models, the on-board computer
must be used to check the engine oil level.
Checking the oil level using the on-
board computer
!Do not add too much oil. adding too much
engine oil can result in damage to the engine
or to the catalytic converter. Have excess
engine oil siphoned off.
G 550: the oil level can only be checked using
the on-board computer.
When checking the oil level:
Rpark the vehicle on a level surface.
Rthe engine should be switched off for approx-
imately five minutes if the engine is at normal
operating temperature.
XMake sure that the SmartKey is in position 2
in the ignition lock.
XPress the 9or: button on the steering
wheel to select the following message:
The measurement takes a few seconds. You will
see one of the following messages in the multi-
function display:
REngine Oil Level OK
RAdd1.0qt(Canada: 1.0liter)toreachmaximum oil level
RAdd 1.5 qts(Canada: 1.5 liters)toreach maximum oil level
RAdd 2.0 qts.(Canada: 2.0 liters)toreach maximum oil level
XAdd oil if necessary.
If the engine is at normal operating temperature and the Engine oil Reduce oil level
dis-
play appears, too much oil has been added.
XHave excess oil siphoned off.
If the Switch ignition on to check
engine oil levelmessage appears:
XTurn the SmartKey to position 2in the ignition
lock (Ypage 112).
If the Observe waiting time
message
appears:
XIf the engine is at normal operating tem-
perature: repeat the measurement after
approximately five minutes.
XIf the engine is not at normal operating
temperature: e.g. if the engine was only star-
ted briefly, repeat the measurement after
approximately 30 minutes.
If the Engine oil level Not when engine
onmessage appears:
XSwitch off the engine.
XIf the engine is at normal operating tem-
perature: wait about five minutes before car-
rying out the measurement.
XIf the engine is not at normal operating
temperature: e.g. if the engine was only star-
ted briefly, wait approximately 30 minutes
before carrying out the measurement.
iIf you wish to cancel the measurement,
press the 9or: button on the multi-
function steering wheel.
Adding engine oil
GWARNING
Certain components in the engine compart-
ment, such as the engine, radiator and parts
of the exhaust system, can become very hot.
Engine compartment237
Maintenance and care
Z

Working in the engine compartment poses a
risk of injury.
Where possible, let the engine cool down andtouch only the components described in the
following.
GWARNING
If engine oil comes into contact with hot com- ponents in the engine compartment, it may
ignite. There is a risk of fire and injury.
Make sure that engine oil is not spilled next to
the filler neck. Let the engine cool down and
thoroughly clean the engine oil off the com-
ponents before starting the engine.
HEnvironmental note
When adding oil, take care not to spill any. If
oil enters the soil or waterways, it is harmful to
the environment.
!Only use engine oils and oil filters that have
been approved for vehicles with a service sys-
tem. You can obtain a list of the engine oils
and oil filters tested and approved in accord- ance with the Mercedes-Benz Specifications
for Service Products at any Mercedes-Benz
Service center.
Damage to the engine or exhaust system is
caused by the following:
Rusing engine oils and oil filters that have notbeen specifically approved for the service
system
Rreplacing engine oil and oil filters after the
interval for replacement specified by the
service system has been exceeded
Rusing engine oil additives.
!Do not add too much oil. If the oil level is
above the "max" mark on the dipstick, too
much oil has been added. This can lead to
damage to the engine or the catalytic con-
verter. Have excess oil siphoned off.
Example: engine oil cap
XTurn cap :counter-clockwise and remove it.
XAdd the amount of oil required.
Observe the specifications in the on-board com-
puter when doing so or fill carefully to the max-
imum mark on the oil dipstick.
Further information on engine oil (
Ypage 292).
iThe difference between the minimum mark
and the maximum mark on the oil dipstick is
approximately 2.1 US qt (2 l).
XReplace cap :on the filler neck and tighten
clockwise.
Ensure that the cap locks into place securely.
Additional service products
Checking coolant level
GWARNING
Certain components in the engine compart-
ment, such as the engine, radiator and parts
of the exhaust system, can become very hot.
Working in the engine compartment poses a
risk of injury.
Where possible, let the engine cool down and touch only the components described in the
following.
GWARNING
The cooling system is pressurized, particularly
when the motor is warm. If you open the cap,
you could be scalded if hot coolant sprays out.
There is a risk of injury.
238Engine compartment
Maintenance and care