check engine MERCEDES-BENZ G-CLASS SUV 2013 Service Manual

Display messages Possible causes/consequences and
0050 Solutions0077
Check Tire Pressure The tire pressure in one or more tires has dropped significantly.
G WARNING
With tire pressures which are too low, there is a risk of the
following 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 156).
X If there is a flat tire, inspect the tires ( Y page 304).
X Check the tire pressure (Y page 325).
X If necessary, correct the tire pressure. 0077
Correct Tire
Pressure The tire pressure is too low in at least one of the tires, or the tire
pressure difference between the wheels is too great.
X
Check the tire pressures at the next opportunity (Y page 325).
X If necessary, correct the tire pressure. Vehicle
Display messages Possible causes/consequences and
0050 SolutionsShift to 'P' or
'N' to Start
Engine You have attempted to start the engine with the transmission in
position R or D.
X
Shift the transmission to position P or N.Auxiliary Battery
Malfunction The auxiliary battery for the automatic transmission is no longer
being charged.
X
Visit a qualified specialist workshop at the next opportunity.
X Until then, set the automatic transmission to position P before
you switch off the engine.
X Before leaving the vehicle, apply the parking brake. Display messages
245
On-board computer and displays Z

Display messages Possible causes/consequences and
0050 Solutions0065 The rear door is open.
G WARNING
When the engine is running, exhaust gases can enter the vehicle
interior if the rear door is open.
There is a risk of poisoning.
X Close the rear door. 0066 The hood is open.
G WARNING
The open hood may block your view when the vehicle is in motion.
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.
X Secure the vehicle against rolling away ( Y page 156).
X Close the hood. 0051 At least one door is open.
A warning tone also sounds.
X
Close all the doors. 0052
Power Steering
Malfunction See
Operator's Manual The power steering is malfunctioning.
A warning tone also sounds.
G WARNING
You will need to use more force to steer.
There is a risk of an accident.
X Check whether you are able to apply the extra force required.
X If you are able to steer safely:
carefully drive
on to a qualified
specialist workshop.
X If you are unable to steer safely: do not drive
on. Contact the
nearest qualified specialist workshop. Phone No Service Your vehicle is outside the network provider's transmitter/
receiver range.
X
Wait until the mobile phone operational readiness symbol
appears in the multifunction display. 00B2
Check Washer Fluid The washer fluid level in the washer fluid reservoir has dropped
below the minimum.
X
Add washer fluid ( Y page 292).246
Display messages
On-board computer and displays

SmartKey
Display messages Possible causes/consequences and
0050 Solutions00AF
Key Does Not
Belong to Vehicle You have put the wrong SmartKey in the ignition lock.
X
Use the correct SmartKey. 00AF
Take Your Key
from
Ignition The SmartKey is in the ignition lock.
X
Remove the SmartKey. 00AF
Obtain a New Key The SmartKey needs to be replaced.
X
Visit a qualified specialist workshop. Warning and indicator lamps in the
instrument cluster
Overview of warning and indicator
lamps
0058 Low-beam
headlamps(Y page 99)
003E003D Turn signals (Y
page 103)
0057 High-beam headlamps
(
Y page 103)
005A Fog lamps (Y page 101)
005E Rear fog lamp (Y page 101)
00E9 Seat belts (Y page 248)
0027 (USA) Brakes (Y page 249)
004D (Canada) Brakes (yellow) (Y page 249)
0025 ABS (Y page 250)
00E5 ESP®
(Y page 252)
00BB ESP®
OFF (Y page 252)
0075 SRS (Y page 255)
00B9 Check Engine (Y page 256)
00B6 Reserve fuel (Y page 256)
00AC Coolant (Y page 256)
00BA Distance warning signal
(Y page 258)
0077 Tire pressure monitor
(Y page 259) Warning and indicator lamps in the instrument cluster
247
On-board computer and displays Z

Problem Possible causes/consequences and
0050 Solutions00E5
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.
X When pulling away,
only depress the accelerator pedal as far as
necessary.
X Ease off the accelerator pedal while the vehicle is in motion.
X Adapt your driving style to suit the road and weather conditions.
X Do not deactivate ESP ®
.
For exceptions, see: ( Y page 62).00BB
The yellow ESP
®
OFF
warning lamp is lit

while
the engine is running. ESP
®
is deactivated.
G WARNING
If ESP ®
is switched off, ESP ®
is unable to stabilize the vehicle.
There is an increased risk of skidding and an accident.
X Reactivate ESP ®
.
For exceptions, see: ( Y page 62).
X Adapt your driving style to suit the road and weather conditions.
If ESP ®
cannot be activated:
X Have ESP ®
checked at a qualified specialist workshop. 00E500BB
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 not available due to a
malfunction.
G WARNING
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.
X Observe the additional display messages in the multifunction
display.
X Drive on carefully.
X Visit a qualified specialist workshop. Warning and indicator lamps in the instrument cluster
253
On-board computer and displays Z

Problem Possible causes/consequences and
0050 Solutions(Canada only)
(USA only)
The red parking brake
warning
lamp comes
on
while the vehicle is
moving.
A warning tone
also sounds. You are driving with the parking brake applied.
X
Release the parking brake.
The warning lamp goes out and the warning tone ceases. 0075
The red SRS warning
lamp is lit while the
engine is running.
There is a malfunction in the SRS (Supplemental Restraint
System).
G WARNING
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.
X Drive on carefully.
X Have SRS checked at a qualified specialist workshop
immediately.
For further information about SRS, see (Y page 39). Warning and indicator lamps in the instrument cluster
255
On-board computer and displays Z

Engine
Problem Possible causes/consequences and
0050 Solutions00B9
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 running 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
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. 00B6
The yellow reserve fuel
warning lamp lights up
while the engine is
running.
The fuel level has dropped into the reserve range.
X
Refuel at the nearest gas station. 00B6
The yellow reserve fuel
warning lamp flashes
while the vehicle is in
motion.
In addition, the 00B9
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
workshop. 00AC
The red coolant
warning lamp lights up
while the engine is
running
and the
coolant
temperature gauge is
at

the start of the scale. The temperature sensor for the coolant temperature gauge is
defective.
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.256
Warning and indicator lamps in the instrument cluster
On-board computer and displays

Problem Possible causes/consequences and
0050 Solutions00AC
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
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 291).
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
mountainous terrain, and stop-start driving. 00AC
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.
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. Warning and indicator lamps in the instrument cluster
257
On-board computer and displays Z

Problem Possible causes/consequences and
0050 SolutionsX
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 156).
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 291).
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 next
qualified specialist workshop.
X Avoid subjecting the engine to heavy loads, e.g. driving in
mountainous terrain, and stop-start driving. Driving systems
Problem Possible causes/consequences and
0050 Solutions00BA
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.
X
Increase the distance. 00BA
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.
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 177).258
Warning and indicator lamps in the instrument clusterOn-board computer and displays

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.
X
Make sure that the windshield wipers are
turned off.
X Pull release lever 0043 on the hood.
The hood is released. X
Lift the hood slightly.
X Push hood catch handle 0044 in the direction
of the arrow and lift the hood.
Closing the hood G
WARNING
When closing the hood, use extreme caution
not to catch hands or fingers. Be careful that
you do not close the hood on anyone.
Make sure the hood is securely engaged
before driving off. Do not continue driving if
the hood can no longer engage after an
accident, for example. The hood could otherwise come loose while the vehicle is in
motion and injure you and/or others.
X Lower the hood and let it drop shut from a
height of approximately 8 in. (20 cm).
X Check 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
Notes on the oil level Depending on the driving style, the vehicle
consumes up to
0.9

US qt (0.8 l) of oil over a
distance of 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
dipstick Example: oil dipstick
When checking the oil level:
R
park the vehicle on a level surface.
R the engine should be switched off for
approximately five minutes if the engine is
at normal operating temperature.
R the engine should be switched off for at
least 30 minutes if the engine is not at
operating temperature
(i.e. if

you only start
the engine briefly). Engine compartment
289
Maintenance and care Z

X
Pull oil dipstick 0043 out of the dipstick guide
tube.
X Wipe off oil dipstick 0043.
X Slowly slide oil dipstick 0043 into the guide
tube to the stop, and take it out again.
The oil level
is

correct if the level is between
MIN mark 0087 and MAX mark 0044.
X Add oil if necessary.
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 65 AMG: the oil level can be checked using
the on-board computer only.
On all other models, the oil dipstick must be
used to check the engine oil level.
When checking the oil level:
R park the vehicle on a level surface.
R the engine should be switched off for
approximately five minutes if the engine is
at normal operating temperature.
X Make sure that the SmartKey is in position
2 in the ignition lock.
X Press the 0041 or 0068 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
multifunction display:
R Engine Oil Level OK
R Add 1.0 qt (Canada: 1.0 liter) to
reach maximum oil level. R
Add 1.5 qts (Canada: 1.5 liters) to
reach maximum oil level.
R Add 2.0 qts.
(Canada: 2.0 liters ) to
reach maximum oil level.
X Add oil if necessary.
If the engine is at normal operating
temperature and the Engine Oil Reduce
Oil Level message appears, the engine oil
level is too high.
X Have excess oil siphoned off.
If the Switch ignition on to check
engine oil level

message appears:
X Turn the SmartKey to position 2 in the
ignition lock (Y page 139).
If the Observe Waiting Time message
appears:
X If the engine is at normal operating
temperature: repeat the measurement
after about five minutes.
X If the engine is not at normal operating
temperature: (e.g. if the engine was only
started briefly) repeat the measurement
after about 30 minutes.
If the Engine Oil level Not With
Engine On message appears:
X Switch off the engine.
X If the engine is at normal operating
temperature: wait about five minutes
before carrying out the measurement.
X If the engine is not at normal operating
temperature: e.g. if the engine was only
started briefly, wait approximately
30 minutes before carrying out the
measurement.
i If you wish to cancel the measurement,
press the 0068 or 0041 button on the
multifunction steering wheel. 290
Engine compartment
Maintenance and care