2015 MERCEDES-BENZ G-Class coolant temperature

Notes/how to use .........................2
53
Opening and closing ..................... .253
Overview ........................................ 253
Cargo compartment enlargement
Important safety notes .................. 250
Cargo tie down rings ......................... 253
CD player/CD changer (on-board
computer) .......................................... 203
Center console
Overview .......................................... 34
Upper section .................................. 34
Central locking
Automatic locking (on-board com-
puter) ............................................. 208
Locking/unlocking (SmartKey) ....... .68
Changing bulbs
Reversing lamps ............................ 113
Side marker lamps ........................ .112
Turn signals (front) ......................... 111
Changing gears .................................. 142
Checklist
After driving off-roa d...................... 159
Before driving off-road ................... 159
Child seat
BabySmart™ air bag deactivation
system ............................................. 56
Forward-facing restraint system ...... 58
LATCH-type (ISOFIX) child seat
anchors ............................................ 55
On the front-passenger sea t............ 58
Problem (malfunction) ..................... 59
Rearward-facing restraint system .... 58
Top Tether ....................................... 55
Child-proof locks
Important safety notes .................... 59
Rear doors ....................................... 60
Children
Restraint systems ............................ 54
Special seat belt retractor ............... 53
Chrome parts (cleaning instruc-
tions) .................................................. 285
Cigarette lighter ................................ 256
Climate control
Controlling automaticall y............... 124
Cooling with air dehumidification .. 122
Defrosting the window s................. 126
Defrosting the windshield .............. 125 Dual-zone automatic climate con-
trol ................................................. 119
Important safety notes .................. 118
Indicator lamp ................................ 124
Maximum cooling .......................... 125
Notes on using dual-zone auto-
matic climate control ..................... 120
Overview of systems ...................... 118
Problem with the rear window
defroster ........................................ 127
Problems with "cooling with air
dehumidification" ........................... 124
Refrigerant ..................................... 341
Refrigerant filling capacity ............. 342
Setting the air distribution ............. 124
Setting the air vents ...................... 128
Setting the airflow ......................... 124
Setting the temperature ................ 124
Switching air-recirculation mode
on/of f............................................ 127
Switching on/of f........................... 121
Switching residual heat on/off ...... 127
Switching the rear window
defroster on/of f............................ 126
Switching the ZONE function on/
off .................................................. 125
Windshield defroster ...................... 126
Climate control system
Deactivating/activating ................. 136
Cockpit
Overview .......................................... 30
see Instrument cluster
COMAND
see separate operating instructions
Combination switch .......................... 103
Consumption statistics (on-board
computer) .......................................... 200
Convenience opening feature
see Side windows
Coolant (engine)
Checking the level ......................... 278
Display message ............................ 221
Filling capacity ............................... 343
Notes ............................................. 342
Temperature (on-board com-
puter) ............................................. 209
Temperature gaug e........................ 197
Warning lamp ................................. 243 6
Index

Steering wheel heating
Indicator lamp (malfunction) ............ 91
Steering wheel paddle shifters ........ 144
Stopwatch (RACETIMER) ...................210
Stowage areas ................................... 249
Stowage compartment
Door stowage compartment .......... 250
Stowage compartments
Armrest (under) ............................ .250
Cup holders ................................... 254
Glove box ....................................... 249
Important safety information ......... 249
Stowage pockets ........................... 250
Summer tires ..................................... 308
Sun visor ............................................ 254
Surround lighting (on-board com-
puter) ................................................. .207
SUV
(Sport Utility Vehicle) ....................... 23
Switching air-recirculation mode
on/off ................................................. 127
Switching off the alarm (ATA) ............ 66T
Tachometer ........................................ 198
Tail lamps
Display message ............................ 220
see Lights
Tank content
Fuel gauge ..................................... 197
Technical data
Capacities ...................................... 337
Tires ............................................... 331
Tires/wheels ................................. 331
Trailer loads ................................... 347
Vehicle data ................................... 344
Wheels .......................................... .331
TELEAID
Call priority ................................... .262
Downloading destinations
(COMAND) ..................................... 263
Downloading routes ....................... 265
Emergency call .............................. 260
Geo fencing ................................... 265
Important safety notes .................. 258
Locating a stolen vehicle .............. .264
MB info call button ........................ 262 Remote vehicle locking .................. 263
Roadside Assistance button .......... 261
Self-test ......................................... 259
Speed alert ...................................
.265
System .......................................... 259
Triggering the vehicle alarm ........... 266
Vehicle remote malfunction diag-
nosis .............................................. 264
Vehicle remote unlocking .............. 263
Telephone
Accepting a call ............................ .204
Display message ............................ 234
Menu (on-board computer) ............ 204
Number from the phone book ....... .204
Redialing ........................................ 205
Rejecting/ending a call ................. 204
Telephone compartment .................. 250
Temperature
Coolant .......................................... 197
Coolant (on-board computer) ......... 209
Engine oil (on-board computer) ...... 209
Outside temperature ..................... .198
Setting (climate control) ................ 124
Theft deterrent systems
ATA (Anti-Theft Alarm system) ......... 66
Immobilizer ...................................... 65
Tilt/sliding sunroof
see Sliding sunroof
Time
see separate operating instructions
Timing (RACETIMER) ......................... 210
Tire pressure
Calling up (on-board computer) ..... 313
Checking manually ........................ 312
Display message ............................ 229
Maximum ....................................... 312
Notes ............................................. 311
Recommended ............................... 309
Table (single tires) ......................... 310
Tire pressure monitor
Checking the tire pressure elec-
tronically ........................................ 314
Function/notes ............................ .313
Restarting ...................................... 315
Warning lamp ................................. 246
Warning message .......................... 315
Tires
Aspect ratio (definition) ................. 326 16
Index

Instrument cluster
Displays and controls
Function Page
:
Speedometer with segments 198
;
Multifunction display 199
=
Tachometer 198
?
Coolant temperature display 197
A
Fuel gage
B
Instrument cluster lighting control 197Instrument cluster
31At a glance

Activating/deactivating cooling with air dehumidification
General notes If you deactivate the "Cooling with air-dehumidification" function, the air inside the vehicle will
not be cooled. The air inside the vehicle will also not be dehumidified. The windows can fog up
more quickly. Therefore, only deactivate the "Cooling with air-dehumidification" function
briefly.
The "Cooling with air dehumidification" function is only available when the engine is running.
The air inside the vehicle is cooled and dehumidified according to the temperature selected.
Condensation may drip from the underside of the vehicle when it is in cooling mode. This is
normal and not a sign that there is a malfunction.
Switching cooling with air dehumidification on/off !
If the cooling with air dehumidification does not switch on, it is possible that the climate
control system has lost coolant.
Have the cooling with air dehumidification checked at a qualified specialist workshop. Canada only
:
Sets the temperature, left (Y page 124)
; Defrosts the windshield (Y page 125)
= Switches the ZONE function on/off (Y page 125)
? Switches cooling with air dehumidification on/off (Y page 122)
A Switches the rear window defroster on/off (Y page 126)
B Sets the temperature, right (Y page 124)
C Activates/deactivates air-recirculation mode (Y page 127)
D Sets the air distribution (Y page 124)
E Increases the airflow (Y page 124)
F Reduces the airflow (Y page 124)
G Display 122
Operating the climate control systemsClimate cont
rol

Problems with the rear window
defroster
If the indicator lamp in the
ªrear window
defroster button flashes, the on-board volt-
age is too low. The rear window defroster has
deactivated prematurely or cannot be activa-
ted.
X Switch off any consumers that are not
required, e.g. reading lamps or interior
lighting.
When the battery is sufficiently charged,
the rear window defroster is activated
again automatically. Activating/deactivating air-recircula-
tion mode
If you switch on air-recirculation mode, the
windows can fog up more quickly, in particu-
lar at low temperatures. Only use air-recircu-
lation mode briefly to prevent the windows
from fogging up.
X Turn the SmartKey to position 2in the igni-
tion lock (Y page 133).
X To activate: press thedbutton.
The indicator lamp in the dbutton lights
up.
i Air-recirculation mode is automatically
activated at high levels of pollution or at
high outside temperatures. When air-recir-
culation mode is activated automatically,
the indicator lamp in the dbutton is not
lit.
Outside air is added after approximately
30 minutes. X
To deactivate: press thedbutton.
The indicator lamp in the dbutton goes
out.
i Air-recirculation mode switches off auto-
matically:
R after approximately five minutes at out-
side temperatures below approximately
41 ‡
R after approximately five minutes if cool-
ing with air dehumidification is deactiva- ted
R after approximately 30 minutes at out-
side temperatures above approximately
41 ‡ (5 †) Activating/deactivating the residual
heat function
The "residual heat" function is only available
in Canada.
It is possible to make use of the residual heat
of the engine to continue heating the station- ary vehicle for up to 30 minutes after the
engine has been switched off. The heating
time depends on the coolant temperature and
on the interior temperature that has been set.
i The blower will run at a low speed regard-
less of the airflow setting.
i If you activate the residual heat function
at high temperatures, only the ventilation
will be activated.
X Turn the SmartKey to position
0(Y page 133) in the ignition lock or
remove it.
X To activate: press theÁbutton.
The indicator lamp in the Ábutton lights
up. Operating the climate control systems
127Climate control Z

X
To deactivate: press theÁbutton.
The indicator lamp in the Ábutton goes
out.
i Residual heat is deactivated automati-
cally:
R after approximately 30 minutes
R when the ignition is switched on
R if the battery voltage drops
R if the coolant temperature is too low Setting the air vents
Important safety notes
G
WARNING
Very hot or very cold air can flow from the air vents. This could result in burns or frostbite in the immediate vicinity of the air vents. There
is a risk of injury.
Make sure that all vehicle occupants always
maintain a sufficient distance to the air out-
lets. If necessary, redirect the airflow to
another area of the vehicle interior. General notes
In order to ensure the direct flow of fresh air
through the air vents into the vehicle interior,
please observe the following notes:
R keep the air intake grill on the hood free of
blockages, such as ice, snow or leaves.
R never cover the air vents or air intake grilles
in the vehicle interior.
i For virtually draft-free ventilation, adjust
the sliders of the air vents to the center
position.
i If the automatic climate control con-
stantly differs from the set temperature or
if undesired drafts are noticeable, proceed
as follows:
XOpen the side air vents
X Open the center air vents X
Open the rear air vents
X Set the temperature to 72 ‡ (22 †).
The automatic climate control adjusts
to the set temperature. Setting the center air vents
Center air vents
:
Center air vent, left
; Center air vent, right
= Center vent thumbwheel, right
? Center vent thumbwheel, left
X To open/close: turn thumbwheels =
and ?to the right or left. Setting the side air vents
Side air vents
:
Side air vent
; Swiveling side air vent
= Control for side air vent
X To open/close: turn thumbwheel =to the
left or right. 128
Setting the air ventsClimate control

Problem
Possible causes/consequences and
M
MSolutions The coolant tempera-
ture gauge shows a
value above 248 ‡
(120 †). A display mes-
sage may also appear in the multifunction dis-
play 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.
X Stop as soon as possible and allow the engine and the coolant to
cool down.
X Check the coolant level (Y page 278). 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
coolant is too hot and the engine is no longer being cooled suffi-
ciently.
X At coolant temperatures below 248 ‡ (120 †), drive to the
nearest qualified specialist workshop.
X Avoid heavy loads on the engine as you do so, e.g. driving in
mountainous terrain and stop-and-go traffic. Automatic transmission
Important safety notes
G
WARNING
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. G
WARNING
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.
i Bear in mind that the power transmission
between the engine and the transmission is
interrupted when the engine is switched
off. For this reason, shift the automatic
transmission to Pwhen the engine is
switched off and the vehicle is at a stand- still. Apply the parking brake to prevent the
vehicle from rolling away. Selector lever
Overview of transmission positions !
If the engine speed is too high or if the
vehicle is rolling, do not shift the transmis- sion directly from Dto R, from Rto Dor
directly to P.
Do not open the driver's door while the
vehicle is in motion. At low speeds in trans-
mission position Dor R, park position Pis
otherwise engaged automatically.
The transmission could be damaged. Automatic transmission
139Driving and parking Z

Displays and operation
Instrument cluster
Instrument cluster: miles
:
Speedometer with segments (Y page 198)
; Multifunction display (Y page 199)
= Tachometer (Y page 198)
? Coolant temperature (Y page 197)
A Fuel gage
B Instrument cluster lighting (Y page 197)Instrument cluster lighting
The brightness control knob is located on the bottom left of the instrument cluster
(Y page 197).
X Turn the brightness control knob clockwise
or counter-clockwise.
If the light switch is set to Ã,Tor
L, the brightness is dependent upon
the brightness of the ambient light.
i The light sensor in the instrument cluster
automatically controls the brightness of
the multifunction display.
In daylight, the displays in the instrument
cluster are not illuminated. Displaying the coolant temperature
G
WARNING
Driving when your engine is overheated can
cause some fluids which may have leaked into the engine compartment to catch fire. You
could be seriously burned.
Steam from an overheated engine can cause
serious burns which can occur just by opening
the engine hood. Stay away from the engine if you see or hear steam coming from it.
Stop the vehicle in a safe location away from
other traffic. Turn off the engine, get out of the
vehicle and do not stand near the vehicle until
the engine has cooled down.
! A display message is shown if the coolant
temperature is too high. Displays and ope
ration
197On-board computer and displays Z