2008 MERCEDES-BENZ G55AMG air conditioning

Contents
Settings menu .............................. 146
Trip computer menu..................... 157
TEL menu ..................................... 159
Automatic transmission ..................... 162 Gear selector lever ....................... 162
Shifting procedure ....................... 163
Gear selector lever positions ....... 164
Driving tips ................................... 166
Gear ranges ................................. 167
One-touch gearshifting................. 168
Emergency operation
(Limp-Home Mode) ...................... 169
Transfer case ..................................... 170 Transfer case position .................. 170
Switching transfer case................ 170
Differential locks ............................... 173 A few words about differentials
and differential locks.................... 174
Switching differential locks on
and off.......................................... 175
Good visibility .................................... 177 Headlamp cleaning system .......... 177
Rear view mirrors ......................... 177
Sun visors .................................... 179
Windshield defroster .................... 180
Rear window defroster ................. 181 Climate control ................................... 182
Deactivating the climate control
system ............... ........................... 185
Operating the climate control
system in automatic mode............ 185
Setting the temperature................ 185
Adjusting air distribution............... 186
Adjusting air volume ..................... 186
Front defroster.............................. 187
Air recirculation mode .................. 188
Air conditioning............................. 189
Residual heat and ventilation ........ 190
Rear passenger compartment
adjustable air vents....................... 191
Power windows .................................. 192 Opening and closing ..................... 192
Summer opening feature .............. 193
Convenience closing feature......... 194
Power tilt/sliding sunroof................... 195 Opening and closing ..................... 195
Driving systems ............. ..................... 197
Cruise control ............................... 197
Rear Parking Assist ....................... 200
Rear view camera ......................... 203 Loading .............................................. 206
Roof rack ...................................... 206
Expanding cargo compartment ..... 206
Split rear seat bench .................... 206
Loading instructions ..................... 208
Cargo tie-down rings..................... 209
Partition net* (MB Accessory) ...... 210
Cargo compartment cover blind ... 214
Useful features ................................... 215 Storage compartments ................. 215
Ashtrays........................................ 220
Cigarette lighter............................ 222
Electrical outlet............................. 223
Floormats ..................................... 224
Heated steering wheel .................. 225
Telephone* ................................... 226
Tele Aid......................................... 229
Garage door opener ...................... 236
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Contents
Technical data.................................. 407
Parts service ...................................... 408
Warranty coverage ............................. 409 Loss of Service and Warranty
Information Booklet...................... 409
Identification labels............................ 410
Layout of poly-V-belt drive ................. 412
G 500 ........................................... 412
G 55 AMG..................................... 412
Engine ................................................ 413
Rims and tires .................................... 414 Same size tires ............................. 415
Spare wheel ................................. 416
Electrical system.......... ...................... 417
Main dimensions, vehicle weights
and ratings ......................................... 418 Main dimensions .......................... 418
Vehicle weights and ratings ......... 419 Fuels, coolants, lubricants, etc. ......... 420
Capacities .................................... 420
Engine oils.................................... 423
Engine oil additives ...................... 423
Air conditioning refr igerant .......... 423
Brake fluid .................................... 423
Premium unleaded gasoline ......... 424
Fuel requirements ........................ 424
Gasoline additives ........................ 425
Coolants....................................... 425
Windshield/rear window washer
system and headlamp
cleaning system ........................... 428Index ................................................. 429
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184 Controls in detail
Climate control
The climate control is operational when-
ever the engine is running. You can oper-
ate the climate control system in either the
automatic or manual mode. The system
cools or heats the interior depending on
the selected interior temperature and the
current outside temperature. Nearly all dust particles, pollutants and
odors are filtered out before outside air
enters the passenger compartment
through the air distribution system.
The air conditioning will not engage (no
cooling) if the
A/C mode is deactivated
(
page 189).
Warning!G
When operating the climate control, the air
that enters the passenger compartment
through the air vents can be very hot or very
cold (depending on the set temperature).
This may cause burns or frostbite on unpro-
tected skin in the immediate area of the air
vents. Always keep sufficient distance
between unprotected pa rts of the body and
the air vents. If necessary, use the air distri-
bution control (
page 186) to direct the air
to air vents in the vehicle interior that are
not in the immediate area of unprotected
skin.
Warning!G
Follow the recommended settings for
heating and cooling given on the following
pages. Otherwise the windows could fog up,
impairing visibility an d endangering you and
others.
iSevere conditions (e.g. strong air pollution)
may require replacement of the filter before its
scheduled interval. A clogged filter will reduce
the air volume to the interior.
If the vehicle interior is hot, ventilate the interior
before driving off, see “Summer opening fea-
ture” (
page 193). The climate control will then
adjust the interior temperature to the set value
much faster.
Keep the air intake grille in front of the wind-
shield free of snow and debris.
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188 Controls in detail
Climate control
Deactivating
Press button0 orP
(
page 183) once more.
The indicator lamp on the button goes
out. Defrosting is switched off.
Windshield fogged on the outside
Switch the windshield wipers on
(
page 58).
If the automatic mode of the climate
control is switched off:
Turn air distribution control 4
to a orY (
page 183).
Air recirculation mode
Switch to air recirculation mode to prevent
unpleasant odors from entering the vehicle
from the outside (e.g. before driving
through a tunnel). This setting cuts off the
intake of outside air and recirculates the
air in the passenger compartment. Activating
Press button
, (page 183).
The indicator lamp on the button
comes on.
iThe cooling remains switched on.
iKeep this setting selected only until the
windshield is clear again.Warning!G
Fogged windows impair visibility, endanger-
ing you and others. If the windows begin to
fog on the inside, switching off the air
recirculation mode immediately should clear
interior window foggin g. If interior window
fogging persists, make sure the air
conditioning (
page 189) is activated, or
press button 0 orP .
iThe air recirculation mode is activated
automatically at high outside temperatures.
The indicator lamp on button , is not lit when
the air recirculation mode is switched on auto-
matically.
A quantity of outside air is added after approxi-
mately 30 minutes.
If you have turned off the air conditioning
(
page 189) or the outside temperature is
below 41°F (5°C), the air recirculation mode will
not switch on automatically.
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189
Controls in detail
Climate control
Deactivating
Press button
, (page 183) once
more.
The indicator lamp on the button goes
out.
Air conditioning
The cooling function, only operational
when the engine is running, cools the
vehicle interior down to the selected
temperature. The cooling function also
dehumidifies the air in the vehicle interior,
thus preventing the windows from fogging
up. 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
9 (page 183).
The indicator lamp on the button goes
out.
The cooling function switches off after
a short delay.iThe air recirculation mode is deactivated
automatically:

after 5 minutes if the outside temperature is
below approximately 41°F (5°C)

after 5 minutes if the air conditioning is
turned off

after 30 minutes if the outside temperature
is above approximately 41°F (5°C)
iCondensation may drip out from underneath
the vehicle. This is normal and not an indication
of a malfunction.
Warning!G
If you turn off the coo ling function, the inte-
rior air is not dried. The windows can fog up
more quickly. Window fogging may impair
visibility and endanger you and others.
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190 Controls in detail
Climate control
Activating
Moist air can fog up the windows. You can
dehumidify the air with the air condition-
ing.
Press button9 (page 183) once
more.
The indicator lamp on the button
comes on.
The air conditioning uses the refrigerant
R134a. This refrigerant is free of CFCs
which are harmful to the ozone layer.
Residual heat and ventilation
With the engine switched off, it is possible
to continue to heat or ventilate the interior
for up to 30 minutes. This feature makes
use of the residual he at produced by the
engine. Activating
Turn the SmartKey in the starter switch
to position
0 or 1 (
page 39).
or
Remove the SmartKey from the starter
switch.
Press button 9 (page 183).
The indicator lamp on the button
comes on.
Deactivating
Press button 9 (page 183) once
more.
The indicator lamp on the button goes
out.!If the air conditioning cannot be turned on
again, this indicates that the air conditioning is
losing refrigerant. The compressor has turned
itself off.
Have the air conditioning checked at the nearest
authorized Mercedes-Benz Light Truck Center.
iHow long the system will provide heating
depends on

the coolant temperature

the battery voltage
Regardless of the temperature and air volume
set on the climate control panel, an interior
temperature is aimed at by 72°F (22°C) and the
blower runs on low speed to protect the vehicle
battery.
iThe residual heat is automatically turned off:

when the ignition is switched on

after about 30 minutes

if the coolant temperature is too low

if the battery voltage drops
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191
Controls in detail
Climate control
Rear passenger compartment
adjustable air vents
The air conditioning for the rear passenger
compartment is contro
lled via the climate
control panel (
page 183).
The air vents for the rear passenger
compartment are located in the rear
center console.
1Thumbwheel for air volume control for
center air vents
2 Left center air vent, adjustable
3 Right center air vent, adjustable Adjusting air
distribution
Push the slide for the left center
vent2 or right center air vent 3 to
the left, right, up, or down.
The air flow is directed in the
corresponding direction.
Adjusting air volume
Turn thumbwheel 1 up.
The air volume is increased.
Turn thumbwheel 1 down.
The air volume is decreased.iThe temperature at the center air vents 2
and 3 for the rear passenger compartment is
the same as at the dashboard center air vents.
iFor draft-free ventilation, move the sliders
for the center air vents 2 and 3 upward.
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304 Operation
Tires and wheels
Tire ply material1 Plies in sidewall
2 Plies under tread
This marking tells you about the type of
cord and number of plies in the sidewall
and under the tread.Tire and loading terminology
Accessory weight
The combined weight (in excess of those
standard items which may be replaced) of
automatic transmission, power steering,
power brakes, power windows, power
seats, radio, and heater, to the extent that
these items are available as
factory-installed equipment (whether
installed or not).
Air pressure
The amount of air inside the tire pressing
outward on each square inch of the tire.
Air pressure is expressed in pounds per
square inch (psi), or kilopascal (kPa) or
bars.
Aspect ratio
Dimensional relationship between tire
section height and section width
expressed in percentage. Bar
Another metric unit for air pressure. There
are 14.5038 pounds per square inch (psi)
to 1 bar; there are 100 kilopascals (kPa)
to 1 bar.
Bead
The tire bead contains steel wires wrapped
by steel cords that hold the tire onto the
rim.
Cold tire inflation pressure
Tire inflation pressure when your vehicle
has been sitting for
at least 3 hours or
driven no more than 1 mile (1.6 km).
Curb weight
The weight of a motor vehicle with stan-
dard equipment incl uding the maximum
capacity of fuel, oil, and coolant, and, if so
equipped, air conditioning and additional
optional equipment, but without passen-
gers and cargo.
iFor illustration purposes only. Actual data
on tires are specific to each vehicle and may vary
from data shown in above illustration.
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