2004 MERCEDES-BENZ G500 air conditioning

Contents
Transfer case ..................................... 145
Gear range ................................... 145
Switching transfer case................ 145
Differential locks ............................... 148
A few words about differentials
and differential locks.................... 149
Switching differential locks
on and off..................................... 150
Good visibility .................................... 152
Rear view mirror........................... 152
Headlamp cleaning system .......... 153
Sun visors .................................... 154
Rear window defroster ................. 155
Climate control .................................. 156
Setting the temperature ............... 158
Adjusting air distribution and
volume ......................................... 159
Defrosting .................................... 160
Air recirculation............................ 160
Residual engine heat utilization.... 161
Deactivating the climate control
system ......................................... 162
Air conditioning ............................ 162
Rear passenger compartment
adjustable air vents...................... 163Power windows .................................. 164
Opening and closing the windows. 164
Sliding/pop-up roof ............................ 166
Opening and closing the
sliding/pop-up roof....................... 166
Driving systems .................................. 169
Cruise control ............................... 169
Rear Parking Assist* ..................... 172
Loading............................................... 175
Roof rack ...................................... 175
Cargo compartment cover ............ 175
Enlarged cargo compartment........ 176
Split rear seat bench..................... 176
Partition net* (MB Accessory) ...... 178
Loading instructions ..................... 180
Cargo tie-down rings ..................... 182
Useful features ................................... 183
Interior storage spaces ................. 183
Ashtrays........................................ 186
Cigarette lighter ............................ 188
Electrical outlet ............................. 188
Telephone* ................................... 189
Tele Aid ......................................... 190
Garage door opener ...................... 198
Heated steering wheel .................. 203
Operation.......................................... 205
The first 1000 miles (1500 km) .......... 206
Driving instructions ............................ 207
Drive sensibly – save fuel ............. 207
Drinking and driving...................... 207
Pedals ........................................... 207
Power assistance .......................... 208
Brakes .......................................... 208
Driving off ..................................... 209
Parking ......................................... 209
Tires.............................................. 210
Hydroplaning ................................ 210
Tire traction .................................. 211
Tire speed rating ........................... 211
Winter driving instructions ............ 212
Standing water ............................. 213
Passenger compartment............... 213
Off-road driving ............................. 213
Control and operation of radio
transmitters .................................. 221
Driving abroad .............................. 222
Catalytic converter ....................... 222
Emission control ........................... 222
Coolant temperature .................... 223

Contents
Battery ............................................... 311
Charging the battery .................... 311
Disconnecting the battery ............ 312
Reconnecting the battery ............. 312
Jump starting ..................................... 313
Towing the vehicle ............................. 315
Transporting the vehicle............... 317
Towing the vehicle -
various problem scenarios ........... 317
Front towing eye .......................... 318
Rear towing eye ........................... 318
Freeing a stranded vehicle ........... 318
Fuses ................................................. 319
Fuse box in passenger
compartment ............................... 319
Fuse box in battery box................ 319
Fuse box in front passenger
footwell ........................................ 320
Fuse box in middle tunnel ............ 321
Technical data.................................. 323
Spare parts service............................. 324
Warranty coverage ............................. 325
Loss of Service and Warranty
Information Booklet ...................... 325
Identification labels ............................ 326
Layout of poly-V-belt drive .................. 327
G 500/G 55 AMG ......................... 327
Engine ................................................ 328
Rims and tires .................................... 329
Rims and Tires ............................. 329
Spare wheels ................................ 330
Electrical system ................................ 331
Main dimensions, vehicle weights
and ratings ......................................... 332
Main dimensions........................... 332
Vehicle weights and ratings .......... 332Fuels, coolants, lubricants, etc. .......... 333
Capacities ..................................... 333
Engine oils .................................... 334
Engine oil additives ....................... 335
Air conditioning refrigerant ........... 335
Brake fluid .................................... 335
Premium unleaded gasoline.......... 335
Fuel requirements......................... 336
Gasoline additives......................... 336
Coolants ....................................... 336
Anticorrosion/antifreeze .............. 337
Windshield/rear window washer
system and headlamp cleaning
system .......................................... 339
Consumer information........................ 340
Uniform tire quality grading .......... 340
Technical terms............................... 343Index................................................. 349

158 Controls in detailClimate controlThe climate control is operational whenev-
er the engine is running. You can operate
the climate control system in either the au-
tomatic or manual mode. The system cools
or heats the interior depending on the se-
lected interior temperature and the cur-
rent outside temperature.Nearly all dust particles, pollutants and
odors are filtered out before outside air en-
ters the passenger compartment through
the air distribution system.
The air conditioning will not engage (no
cooling) if the AC
OFF
mode is selected
(
page 162).
Setting the temperature
Use temperature controls2 and3 to
separately adjust the air temperature on
each side of the passenger compartment.
You should raise or lower the temperature
setting in small increments, preferably
starting at 72°F (22°C).
Warning!
G
When operating the automatic climate con-
trol, the air that enters the passenger com-
partment through the air vents in the
footwell can be very hot or very cold (de-
pending on the set temperature). This may
cause burns or frostbite on unprotected skin
in the immediate area of the air vents. Al-
ways keep sufficient distance between un-
protected parts of the body and the footwell
air vents. If necessary, change the air flow
using the air distribution controls to direct
the air away from the footwell air vents
(page 159).
Warning!
G
Follow the recommended settings for heat-
ing and cooling given on the following pag-
es. Otherwise the windows could fog up,
impairing visibility and endangering you and
others.
iIf the vehicle interior is hot, ventilate
the interior before driving off.
Keep the air intake grille in front of the
windshield free of snow and debris.iWhen operating the climate control
system in automatic mode, you will
only rarely need to adjust the tempera-
ture, air volume and air distribution.

162 Controls in detailClimate controlDeactivating the climate control system
Deactivating
Set the air volume control switch to
position0.
Reactivating

Set the air volume control switch to any
speed.
Air conditioning
The air conditioning is operational while
the engine is running and cools the interior
air to the temperature set by the operator.
Deactivating
It is possible to deactivate the air condi-
tioning (cooling) function of the climate
control system. The air in the vehicle will
then no longer be cooled or dehumidified.
Press button°.
The indicator lamp on the button°
comes on.Activating
Moist air can fog up the windows. You can
dehumidify the air with the air conditioner.

Press button° again.
The indicator lamp on the button°
goes out.
The air conditioner uses the refrigerant
R134a. This refrigerant is free of CFCs
which are harmful to the ozone layer.
iCondensation may drip out from under-
neath the vehicle. This is normal and
not an indication of a malfunction.
!If the° button on the climate con-
trol panel starts to blink, this indicates
that the air conditioner is losing refrig-
erant. The compressor has turned itself
off. The air conditioner cannot be
turned on again.

Have the air conditioner checked at
the nearest authorized
Mercedes-Benz Light Truck Center.

327 Technical data
Layout of poly-V-belt drive
Layout of poly-V-belt drive
For dimensions of the poly-V-belt, see
technical data (
page 328).
G500/G55AMG
1Automatic belt tensioner
2Power steering pump
3Air conditioning compressor
4Crankshaft
5Coolant pump
6Generator (alternator)
7Idler pulley

334 Technical dataFuels, coolants, lubricants, etc.Engine oils
Engine oils are specifically tested for their
suitability in our engines. Therefore, use
only engine oils recommended by
Mercedes-Benz. Information on approved
engine oils is available in the Factory Ap-
proved Service Products pamphlet, or at
your authorized Mercedes-Benz Light
Truck Center.Please follow the FSS and Service Booklet
recommendations for scheduled oil chang-
es. Failure to do so could result in engine
damage not covered by the
Mercedes-Benz Limited Warranty.
Model
Capacity
Fuels, coolants, lubricants, etc.
Cooling system
approx. 12.7 US qt (12.0 l)
MB Anticorrosion/Antifreeze
Air conditioning system
R-134a refrigerant and
special PAG lubricant oil (never R-12)
Windshield/rear window washer system
and headlamp cleaning system
approx. 7.9 US qt (7.5 l)
MB Windshield Washer Concentrate
and water
1
1Use MB Windshield Washer Concentrate “S” and water for temperatures above freezing point or MB Windshield Washer Concentrate “S” and commercially available
premixed windshield washer solvent / antifreeze for temperatures below freezing point. Follow suggested mixing ratios (page 339).
!Always check the oil filler cap
(page 232) for important informa-
tion pertaining to the engine oil need-
ing to meet a specific Mercedes-Benz
specification (e.g. MB 229.5). If such
information is printed on the oil filler
cap, only use an engine oil from the list
of approved engine oils in the Factory
Approved Service Products pamphlet
that meets the specification indicated
on the oil filler cap.
Using engine oils of other specification
may cause the FSS to incorrectly deter-
mine the next service interval and will
result in engine damage not covered by
the Mercedes-Benz Limited Warranty.

335 Technical data
Fuels, coolants, lubricants, etc.
Engine oil additives
Do not blend oil additives with engine oil.
They may damage the engine.
Damage or malfunctions resulting from
blending oil additives are not covered by
the Mercedes-Benz Limited Warranty.Air conditioning refrigerant
R-134a (HFC) refrigerant and special PAG
lubricating oil is used in the air condition-
ing system.
Never use R-12 (CFC) or mineral-based lu-
bricating oil. Otherwise damage to the
system will occur.
Brake fluid
During vehicle operation, the boiling point
of the brake fluid is continuously reduced
through the absorption of moisture from
the atmosphere. Under extremely strenu-
ous operating conditions, this moisture
content can lead to the formation of bub-
bles in the system, thus reducing the sys-
tem’s efficiency.
Therefore, the brake fluid must be re-
placed every two years, preferably in the
spring.
Only brake fluid approved by
Mercedes-Benz is recommended. Your au-
thorized Mercedes-Benz Light Truck Cen-
ter will provide you with additional
information.
Premium unleaded gasoline
!To maintain the engine’s durability and
performance, premium unleaded gaso-
line must be used. If premium unleaded
is not available and low octane fuel is
used, follow these precautions:

Have the fuel tank only partially
filled with unleaded regular and fill
up with premium unleaded as soon
as possible.


Avoid full throttle driving and abrupt
acceleration.


Do not exceed an engine speed of
3000 rpm if the vehicle is loaded
with a light load such as two per-
sons and no luggage.


Do not exceed
2⁄3 of maximum ac-
celerator pedal position if the vehi-
cle is fully loaded or operating in
mountainous terrain.

349 Index
A
ABS 25, 74, 343
LOW RANGE mode 75
Malfunction indicator lamp 252, 253
Messages in display 261
Warning lamp 252, 253
Accelerator position, automatic
transmission 144
Accident
In case of 50
Activating
Air conditioning (cooling) 162
Air recirculation mode 160
Anti-theft alarm system 82
Central locking (control system) 133
Defrost 160
Easy-entry/exit feature 133
ESP 81
Exterior headlamps 46
Exterior lamps 105
Exterior rear view mirror parking
position 153Hazard warning flasher 108
Headlamps 46
High beams 108
Ignition 33
Rear fog lamp 106
Rear window defroster 155
Windshield wipers 47
Adding
Coolant 233
Engine oil 231
Additional turn signals 295
Adjusting 34
Air distribution 159
Air volume 159
Backrest tilt 36
Exterior rear view mirror 38
Head restraint height 36
Head restraint height, rear seats 96
Head restraint tilt 36
Instrument cluster illumination 112Interior rear view mirror 38
Mirrors 38
Multicontour seat* 97
Seat cushion length 97
Seat cushion tilt 36
Seat fore and aft adjustment 35
Seat height 36
Seats 34
Steering column in/out 37
Steering column up/down 37
Steering wheel 37
Air conditioning (cooling)
Turning off 162
Turning on 162
Air conditioning refrigerant 335
Air distribution
Adjusting 159
Air pressure see Tire inflation pressure
Air recirculation mode 160
Activating 160
Deactivating 161