2014 MERCEDES-BENZ G-CLASS SUV coolant temperature

Cargo compartment enlargement
Important safety note s.................. 185
Cargo tie down rings .........................188
CD see also Digital Operator's Manual 170
CD player/CD changer (on-board
computer) .......................................... 144
Center console Overview .......................................... 34
Upper section .................................. 34
Central locking
Automatic locking (on-board
computer) ...................................... 144
Locking/unlocking (SmartKey) ........66
Changing bulbs
Side marker lamps ...........................86
Changing gears .................................. 101
Checklist After driving off-roa d...................... 108
Before driving off-road ...................108
Child-proof locks
Important safety notes ....................58
Rear doors ....................................... 58
Children
In the vehicle ................................... 53
Restraint systems ............................ 53
Child seat
Automatic recognition .....................44
Automatic recognition/air bag
deactivation, self-test ......................46
LATCH-type (ISOFIX) child seat
anchors ............................................ 56
Special seat belt retractor ...............55
Top Tether ....................................... 57
Troubleshooting ............................... 47
Chrome parts (cleaning
instructions) ...................................... 210
Cigarette lighter ................................ 189
Cleaning Trailer tow hitch ............................. 206
Clear button ....................................... 178
Climate control Controlling automatically .................94
Cooling with air dehumidification ..... 94
Defrosting the windows ...................94
Defrosting the windshield ................94Dual-zone automatic climate
control
....................................... 93, 94
Important safety notes ..............92, 94
Indicator lamp .................................. 94
Maximum cooling ............................ .94
Notes on using dual-zone
automatic climate control ................94
Overview of systems ........................92
Problems with "cooling with air
dehumidification" ............................. 94
Problem with the rear window
defroster .......................................... 94
Refrigerant ..................................... 261
Setting the air distribution ...............94
Setting the airflow ........................... 94
Setting the temperature ..................94
Switching air-recirculation mode
on/off .............................................. 94
Switching on/off .............................. 94
Switching residual heat on/off ........94
Switching the rear window
defroster on/off ............................... 94
Switching the ZONE function on/
off .................................................... 94
Windshield defroster ........................94
Cockpit
Overview .......................................... 30
see Instrument cluster
COMAND
Display ........................................... 173
Examples of operation ...................178
Menu overview .............................. 174
COMAND controller ...........................177
COMAND control panel .....................176
Combination switch ............................83
Compass Display messages ..........................144
Connecting a USB device
see also Digital Operator's Manual 170
Consumption statistics (on-board
computer) .......................................... 144
Convenience opening feature ............94
Convenience telephony see also Digital Operator's Manual 170
Coolant (engine)
Checking the level .........................203
Display message .................... 144, 152
Filling capacity ............................... 2636
Index

TELEAID
Call priority .................................... 193
Emergency call .............................. 190
Important safety notes ..................189
MB info call button ........................192
Roadside Assistance button ..........191
Self-test ......................................... 190
System .......................................... 190
Telephone
Accepting a call ............................. 144
Display message ............................ 144
Number from the phone book ....... .144
Redialing ........................................ 144
Rejecting/ending a call .................144
see also Digital Operator's Manual 170
Telephone compartment ..................185
Temperature Coolant .......................................... 142
Coolant (on-board computer) ......... 144
Engine oil (on-board computer) ...... 144
Outside temperature ..................... .142
Theft deterrent systems
ATA (Anti-Theft Alarm system) .........64
Immobilizer ...................................... 63
Tilt/sliding sunroof
see Sliding sunroof
Time
see separate operating instructions
Timing (RACETIMER) .........................144
Tire pressure Calling up (on-board computer) .....234
Checking manually ........................234
Display message .................... 144, 155
Maximum ....................................... 233
Notes ............................................. 232
Recommended ............................... 230
Table (single tires) .........................231
Tire pressure monitoring system
Checking the tire pressure
electronically ................................. 236
Function/notes ............................. 234
Restarting ...................................... 236
Warning lamp ................................. 167
Warning message .......................... 236
Tires
Aspect ratio (definition) .................248
Average weight of the vehicle
occupants (definition) ....................247Bar (definition)
............................... 247
Changing a wheel .......................... 249
Characteristics .............................. 246
Checking ........................................ 229
Definition of terms .........................247
Direction of rotatio n...................... 250
Display message .................... 144, 155
Distribution of the vehicle
occupants (definition) ....................249
DOT, Tire Identification Number
(TIN) .............................................. .246
DOT (Department of
Transportation) (definition) ............247
GAWR (Gross Axle Weight Rating)
(definition) ..................................... 247
GTW (Gross Trailer Weight)
(definition) ..................................... 247
GVW (Gross Vehicle Weight)
(definition) ..................................... 247
GVWR (Gross Vehicle Weight
Rating) (definition) .........................248
Important safety notes ..................228
Increased vehicle weight due to
optional equipment (definition) ......247
Kilopascal (kPa) (definition) ...........248
Labeling (overview )........................ 243
Load bearing index (definition) ......249
Load index ..................................... 245
Load index (definition) ...................248
M+S tires ....................................... 230
Maximum loaded vehicle weight
(definition) ..................................... 248
Maximum load on a tire (definition) 248
Maximum permissible tire
pressure (definition) ....................... 248
Maximum tire loa d......................... 246
Maximum tire load (definition) .......248
Optional equipment weight
(definition) ..................................... 249
PSI (pounds per square inch)
(definition) ..................................... 248
Replacing ....................................... 249
Service life ..................................... 230
Sidewall (definition) .......................249
Speed rating (definition) ................247
Storing ........................................... 250
Structure and characteristics
(definition) ..................................... 247 Index
17

Instrument cluster
Displays and controls
Function Page
:
Speedometer with segments 142
;
Multifunction display 142
=
Tachometer 142
?
Coolant temperature display 142
A
Fuel gauge
B
Instrument cluster lighting control 142Instrument cluster
31At a glance

residence but also at any location to which
you are traveling. The police and local
authorities can provide reliable information.
Please observe the following when towing a
trailer:
R To acquaint yourself with driving with a
trailer and with the resulting changes to
handling, you should practice cornering,
stopping and backing up in a traffic-free
location.
R Before driving, check:
-Trailer tow hitch
- Safety switch for braked trailers
- Safety chains
- Electrical connections
- Lights
- Wheels
R Adjust the exterior mirrors to provide an
unobstructed view of the rear section of the
trailer.
R If the trailer features electronically
controlled brakes, pull away the vehicle/
trailer combination carefully, manually
brake using the brake controller, and check
the brakes for correct function.
R Secure any objects on the trailer to prevent
the cargo from slipping when the vehicle is
in motion.
R If you couple up a trailer, regularly check
the cargo for secure fastening and make
sure that the trailer lamps and (if
applicable) the trailer brakes are
functioning correctly.
R Bear in mind that the handling will be less
stable when towing a trailer than when
driving without one. Avoid sudden steering
movements.
R The vehicle/trailer combination is heavier,
accelerates more slowly, has a decreased
gradient climbing capability and a longer
braking distance.
It is more susceptible to side winds and
requires more careful steering. R
If possible, avoid abrupt braking. Depress
the brake pedal moderately at first, so that
the trailer can activate its own brakes. Then
increase the pressure on the brake pedal.
R If the automatic transmission continues to
shift back and forth between two gears
when driving up or downhill, restrict the
shift range. Select shift range 4, 3, 2,or1.
A lower gear and lower speed reduce the
risk of engine failure.
R When driving downhill, shift to a lower gear
to utilize the engine's braking effect.
Avoid continuous brake application as this
may overheat the vehicle brakes and, if
installed, the trailer brakes.
R If the coolant temperature increases
dramatically while the air-conditioning
system is switched on, switch off the air-
conditioning system.
Coolant heat can additionally be dissipated
by opening the windows and by setting the
blower fan and the interior temperature to
maximum.
R When overtaking, pay particular attention
to the extended length of your vehicle/
trailer combination.
Due to the length of your vehicle/trailer
combination, you will have to travel an
additional distance beyond the vehicle you
are overtaking before returning to the
previous lane. Decoupling a trailer
! Do not disconnect a trailer with an
engaged overrun brake. Otherwise, your
vehicle could be damaged by the
rebounding of the overrun brake.
X Make sure that the automatic transmission
is set to position P.
X Apply the parking brake.
X Start the engine. Towing a trailer
139Driving and parking Z

Useful information
i This Operator's Manual describes all
models and all standard and optional
equipment 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
specialist workshops: (Y page 27).Important safety notes
G
WARNING
The driver's concentration must always be
directed primarily at road traffic.
For your safety and the safety of others,
selecting features through the multifunction
steering wheel should only be done by the
driver when traffic and road conditions permit
it to be done safely.
Bear in mind that at a speed of only 30 mph
(approximately 50 km/h), the vehicle covers
a distance of 44 feet (approximately 14 m) per
second. G
WARNING
No messages will be displayed if either the
instrument cluster or the multifunction
display is inoperative.
As a result, you will not be able to see
information about your driving conditions,
such as
R speed
R outside temperature
R warning/indicator lamps
R malfunction/warning messages
R failure of any systems
Driving characteristics may be impaired. If you must continue to drive, do so with added
caution. Contact an authorized Mercedes-
Benz Center as soon as possible.
G
WARNING
Malfunction and warning messages are only
displayed for certain systems and are
intentionally not very detailed. The
malfunction and warning messages are
simply a reminder with respect to the
operation of certain systems. They do not
replace the owner's and/or driver's
responsibility to maintain the vehicle's
operating safety. Have all required
maintenance services and safety checks
performed on the vehicle. Bring the vehicle to
an authorized Mercedes-Benz Center to
address the malfunction and warning
messages. G
WARNING
All categories of messages contain important
information which should be taken note of
and, where a malfunction is indicated,
addressed as soon as possible at an
authorized Mercedes-Benz Center.
Failure to repair the condition noted may
cause damage not covered by the Mercedes-
Benz Limited Warranty, or result in property
damage or personal injury.
For an illustration of the instrument cluster,
see (Y page 142). Displays and operation
Information in the Digital Operator's
Manual
In the Digital Operator's Manual you will find
information on the following topics:
R Instrument cluster
R Instrument lighting
R Coolant temperature display
R Tachometer
R Speedometer with segments 142
Displays and operationOn-board computer and displays

Engine
Display messages Possible causes/consequences and
M
MSolutions ?
Coolant Too Hot Coolant Too Hot
Stop Vehicle Turn Stop Vehicle Turn
Engine Off Engine Off The coolant is too hot.
A warning tone also sounds.
G WARNING
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.
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 ( Ypage 104).
X Leave the vehicle and keep a safe distance from the vehicle until
the engine has cooled down.
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 display message goes out
and the coolant temperature is below 248 ‡ (120 †).
Otherwise, the engine could be damaged.
X Pay attention to the coolant temperature display.
X If the temperature increases again, visit a qualified specialist
workshop immediately.
Under normal operating conditions and with the specified coolant
level, the coolant temperature may rise to 248 ‡ (120 †). The poly-V-belt may have torn.
X
Pull over and stop the vehicle safely and switch off the engine,
paying attention to road and traffic conditions.
X Check the poly-V-belt.
If the poly-V-belt is torn:
! Do not continue driving. The engine could otherwise overheat.
X Consult a qualified specialist workshop.
If the poly-V-belt is not damaged:
X Wait until the display message disappears before restarting the
engine. Otherwise, the engine could be damaged.
X Pay attention to the coolant temperature display.
X Visit a qualified specialist workshop. 152
Display messagesOn-board computer and displays

Engine
Problem Possible causes/consequences and
M
MSolutions ?
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.
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 104).
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 203).
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
mountainous terrain, and stop-start driving. Warning and indicator lamps in the instrument cluster
165On-board computer and displays Z

engine oils and oil filters tested and
approved in accordance 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:
R using engine oils and oil filters that have
not been specifically approved for the
service system
R replacing engine oil and oil filters after
the interval for replacement specified by
the service system has been exceeded
R using 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
converter. Have excess oil siphoned off. Example: engine oil cap
X
Turn cap :counter-clockwise and remove
it.
X Add the amount of oil required.
Observe the specifications in the on-board
computer when doing so or fill carefully to the
maximum mark on the oil dipstick.
Further information on engine oil
(Y page 261).
i The difference between the minimum
mark and the maximum mark on the oil
dipstick is approximately 2.1 US qt (2 l).X
Replac e cap:on the filler neck and
tighten clockwise.
Ensure that the cap locks into place
securely. Additional service products
Checking coolant level G
WARNING
The engine cooling system is pressurized,
particularly when the engine is warm. When
opening the cap, you could be scalded by hot
coolant spraying out. There is a risk of injury.
Let the engine cool down before opening the
cap. Wear eye and hand protection when
opening the cap. Open the cap slowly half a
turn to allow pressure to escape. X
Park the vehicle on a level surface.
Only check the coolant level when the
vehicle is on a level surface and the engine
has cooled down.
X Turn the SmartKey to position 2in the
ignition lock (Y page 97).
X Check the coolant temperature display in
the instrument cluster.
The coolant temperature must be below
158 ‡ (70 †).
X Slowly turn cap :half a turn counter-
clockwise to allow excess pressure to
escape. Engine compartment
203Maintenance and care Z