2012 MERCEDES-BENZ G-Class air condition

1, 2, 3 ...
115 V socket ...................................... 197
12 V socket
........................................ 196
4ETS (Electronic Traction System) Function/notes ................................ 56
4MATIC (permanent four-wheel
drive) .................................................. 141A
ABS (Anti-lock Braking System) Display message ............................ 166
Function/notes

................................ 54
Warning lamp ................................. 181
Active service system
see Service interval display
Additives
Engine oil ....................................... 275
Adjusting the seat ............................... 76
Air bags Front air bag (driver, front
passenger) ....................................... 35
Important safety notes .................... 34
PASSENGER AIR BAG
OFF- indicator lamp .......................... 37
Safety guidelines ............................. 33
Window curtain air bag ....................37
Air-conditioning system
see Climate control
Air pressure
see Tire pressure
Air vents ............................................. 111
Important safety notes .................. 110
Rear ............................................... 111
Setting ........................................... 110
Setting the center air vents ...........111
Setting the side air vents ............... 111
Alarm system
see ATA
Anti-lock Braking System
see ABS
Anti-Theft Alarm system
see ATA
Approach/departure angle ..............138
Ashtray ............................................... 195ATA (Anti-Theft Alarm system)
Activating/deactivating

...................57
Function ........................................... 57
Switching off the alarm .................... 57
Authorized Mercedes-Benz Center
see Qualified specialist workshop
AUTO lights
Display message ............................ 168
Automatic car wash .......................... 217
Automatic transmission Driving tips .................................... 121
Emergency running mode ..............124
Important safety notes .................. 119
Kickdown ....................................... 121
Malfunction .................................... 124
Pulling away ................................... 116
Releasing the parking lock
manually ........................................ 124
Selector lever ................................ 120
Automatic transmission
emergency mode ............................... 124 B
Backup lamp Display message
............................ 170
BAS (Brake Assist System)

.................54
Battery Charging ........................................ 231
Checking (SmartKey) ....................... 62
Display message ............................ 172
Important safety guidelines
(SmartKey) ....................................... 62
Important safety notes .................. 230
Jump-starting ................................. 233
Replacing (SmartKey) ...................... 62
Belt
see Seat belts
Brake fluid
Display message ............................ 166
Notes ............................................. 275
Brake fluid level ................................ 215
Brake lamps (display message) .......168
Brakes ABS .................................................. 54
BAS .................................................. 54
Brake fluid (notes) .........................275
Display messages ..........................1664
Index

S
Safety Children in the vehicle .....................47
Child restraint systems ....................47
Overview of occupant safety
systems ...........................................
32
Safety systems
see Driving safety systems


Seat backrest
Folding back .................................. 191
Folding forwards ............................ 191
Seat belts
Adjusting the height ......................... 45
Belt force limiters ............................ 47
Cleaning ......................................... 222
Correct usage .................................. 42
Emergency Tensioning Devices ........ 47
Fastening ................................... 43, 44
Fastening, front ............................... 44
Fastening in the rear, center ............44
Important safety guidelines .............41
Releasing ......................................... 46
Safety guidelines ............................. 33
Special seat belt retractor ............... 49
Warning lamp ................................. 178
Warning lamp (function) ................... 46
Seat heating
Indicator lamp (malfunction) ............ 81
Seats
Adjusting the 4-way lumbar
support ............................................ 79
Adjusting the head restraint ............ 77
Cleaning the cover ......................... 221
Correct driver's seat position ........... 74
Important safety notes .................... 75
Multicontour seat ............................ 79
Storing settings (memory
function) .......................................... 85
Switching seat heating on/off ......... 80
Switching seat ventilation on/off ....81
Seat ventilation
Indicator lamp (malfunction) ............ 81
Sensors (cleaning instructions) .......220
Service indicator see Service interval display Service interval display
....................215
Displaying a
service message (on-
board computer) ............................ 216
Service products
Brake fluid ..................................... 275
Capacities ...................................... 273
Coolant (engine) ............................ 276
Engine oil ....................................... 275
Fuel ................................................ 273
Important safety notes .................. 272
Notes ............................................. 272
Refrigerant (air-conditioning
system) .......................................... 275
Washer fluid ................................... 277
Settings
Calling up a stored setting ............... 86
Factory (on-board computer) ......... 158
On-board computer ....................... 158
Setting the unit (on-board
computer)
Speedometer ................................. 159
Shift ranges ....................................... 121
Side marker lamp (display
message) ............................................ 169
Side windows Convenience closing feature ............ 69
Convenience opening feature .......... 69
Important safety information ........... 68
Opening/closing .............................. 68
Troubleshooting ............................... 69
Ski rack .............................................. 193
Sliding sunroof Important safety notes .................... 70
Opening/closing .............................. 70
Operating manually ..........................71
SmartKey
Changing the battery ....................... 62
Changing the programming ............. 61
Checking the battery ....................... 62
Convenience closing feature ............ 69
Convenience opening feature .......... 69
Important safety notes .................... 60
Loss ................................................. 64
Malfunction ...................................... 64
Starting the engine ........................ 116
Snow chains ...................................... 24512
Index

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 Please read the information on qualified
specialist workshops (Y page 20). Correct driver's seat position
Observe the safety guidelines on
(

Y page 75).
X Check whether you have adjusted seat =
properly.
Electrical seat adjustment ( Y page 76).
When adjusting the seat, make sure:
R you are as far away from the driver's air
bag as possible.
R you are sitting in a normal upright
position. R
you can fasten the seat belt properly.
R you have moved the backrest to an
almost vertical position.
R you have set the seat cushion angle so
that your thighs are gently supported.
R you can depress the pedals properly.
X Check whether the head restraint is
adjusted properly (Y

page 77).
When doing so, make sure that you have
adjusted the head restraint so that the back
of your head is supported at eye level by
the center of the head restraint.
Observe the safety guidelines on
(Y page 75).
X Check whether steering wheel : is
adjusted properly.
Adjusting the steering wheel electrically
(Y page 82).
When adjusting the steering wheel, make
sure:
R you can

hold the steering wheel with your
arms slightly bent.
R you can move your legs freely.
R you can see all the displays in the
instrument cluster clearly.
Observe the safety guidelines on
(Y page 41).
X Check whether you have fastened seat
belt ; properly (Y

page 43).
The seat belt should:
R fit snugly across your body
R be routed across the middle of your
shoulder
R be routed in your pelvic area across the
hip joints
X Before starting off, adjust the rear-view
mirror and the exterior mirrors
(Y page 84) in such a way that you have
a good view of road and traffic conditions.
X Vehicles with a memory function: save
the seat,

steering wheel and exterior mirror
settings ( Y page 85).74
Correct driver's seat position
Seats, steering wheel and mirrors

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 Please read the information on qualified
specialist workshops (Y page 20). Overview of climate control systems
Important safety notes
G
WARNING
Severe conditions (e.g. strong air pollution)
may require replacement of the filter before
its scheduled

replacement interval. A clogged
filter will reduce the air volume to the interior
and the windows could fog up, impairing
visibility and endangering you and others.
Have a blocked filter replaced at a Mercedes-
Benz Center as soon as possible. G
WARNING
Follow
the recommended settings for heating
and cooling given on the following pages.
Otherwise, the windows could fog up,
impairing visibility and endangering you and
others.
Automatic climate control controls the
temperature and the humidity in the vehicle
interior and filters undesirable substances
from the air.
The automatic climate control is only
operational when the engine is running 4
.
Optimum operation is only achieved if you
drive with the side windows and sliding
sunroof closed. i
Ventilate the vehicle for a brief period
during warm weather, e.g. using the
convenience opening feature ( Y page 69).
This will speed up the cooling process and
the desired vehicle interior temperature
will be reached more quickly.
i The integrated filter can filter out most
particles of

dust, and completely filters out
pollen. A clogged filter reduces the amount
of air supplied to the vehicle interior. For
this reason, you should always observe the
interval for replacing the filter, which is
specified in the Maintenance Booklet. As it
depends on environmental conditions, e.g.
heavy air pollution, the interval may be
shorter than stated in the Maintenance
Booklet.
4 The residual heat function can only be switched on/off if the ignition is switched off.104
Overview of climate control systems
Climate control

otherwise fog up as, in air-recirculation
mode,
no
fresh air is drawn into the vehicle.
R Use the residual heat function if you want
to heat or ventilate the vehicle interior
when the ignition is switched off. The
"residual heat" function can only be
activated or deactivated with the ignition
switched off.
R At very low temperatures, the rear window
defroster is only switched on once the
vehicle interior has warmed up. Activating/deactivating climate
control
Important information G
WARNING
When the climate control system is
deactivated, the outside air supply and
circulation are also deactivated. Only choose
this setting for a short time. Otherwise the
windows could

fog up, impairing visibility and
endangering you and others.
i Switch on climate control primarily using
the à button ( Y page 107).
Activating/deactivating X
Turn the SmartKey to position 2 in the
ignition lock.
X To switch on:
turn
control : clockwise to
the desired position (except position 0)
(Y page 105).
X The previously selected settings come into
effect again.
X To switch off: turn control : counter-
clockwise to position 0(Y page 105). Activating/deactivating the cooling
with air dehumidification function
Important information 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.
G
WARNING
If you switch off the cooling function, the
vehicle will not be cooled when weather
conditions are

warm. The windows can fog up
more quickly. Window fogging may impair
visibility and endanger you and others.
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.
i The cooling with air dehumidification
function uses refrigerant R134a. This
coolant does not contain
chlorofluorocarbons, and therefore does
not damage the ozone layer.
Activating/deactivating !
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.
X To activate: press the Á button.
The indicator

lamp in the Á button lights
up.
X To switch off: press the Á button.
The indicator

lamp in the Á button goes
out. The cooling with air dehumidification
function has a delayed switch-off feature. 106
Operating the climate control system
Climate control

Problems with the cooling with air
dehumidification function
If the indicator lamp in the
Á button does
not go out or flashes when switched on, the
cooling with air dehumidification function is
switched off
due to a malfunction. You can no
longer switch on the cooling with air
dehumidification function.
X Consult a qualified specialist workshop. Setting climate control to automatic
G
WARNING
If you switch off the cooling function, the
vehicle will not be cooled when weather
conditions are

warm. The windows can fog up
more quickly. Window fogging may impair
visibility and endanger you and others.
In automatic mode, the set temperature is
maintained automatically at a constant level.
The system automatically regulates the
temperature of the dispensed air, the airflow
and the air distribution.
Automatic mode will achieve optimal
operation if cooling with air dehumidification
is also activated. If desired, cooling with air
dehumidification can be deactivated.
X Turn the SmartKey to position 2 in the
ignition lock.
X Set the desired temperature.
X To switch on: press the à button.
The indicator

lamp in the à button lights
up. Automatic air distribution and airflow
are activated.
X To switch off: press the à button.
The indicator

lamp in the à button goes
out. Automatic air distribution and airflow
are deactivated. Setting the temperature
Different temperatures can be set for the
driver's and front-passenger sides. X
Turn the SmartKey to position 2 in the
ignition lock.
X To increase/reduce: turn controls ;
and
= clockwise or counterclockwise
(Y page 105).
Only change the temperature setting in
small increments. Start at 72 ‡ (22 †).
i If you

turn the temperature control on one
side of the vehicle fully clockwise or
counterclockwise, you will increase or
reduce the temperature on the other side
of the vehicle at the same time. Setting the air distribution
You can set the air distribution for the entire
vehicle.
The symbols for the air distribution have the
following meanings: Symbol Meaning
M
Directs the airflow through the
defroster vents to the
windshield and side windows
Q
Directs the airflow to the entire
vehicle interior
O
Directs the airflow through the
footwell and side air vents
P
Directs the airflow through the
center and side air vents
X
Turn the SmartKey to position 2 in the
ignition lock.
X Press the à button.
The indicator

lamp in the à button goes
out.
X Turn control ?(Y page 105) to the
corresponding symbol. The control can
also be turned to the area between two
symbols. Operating the climate control system
107
Climate control Z

Activating/deactivating air-
recirculation mode
You can deactivate the flow of fresh air if
unpleasant odors are entering the vehicle
from outside. The air already inside the
vehicle will then be recirculated. G
WARNING
Fogged windows impair visibility,
endangering you and others. If the windows
begin to fog on the inside, switching off the
air recirculation mode immediately should
clear interior window fogging. If interior
window fogging persists, make sure the air
conditioning is activated, or press button
z or ¥.
X Turn the SmartKey to position 2 in the
ignition lock.
X To switch on: press the g button.
The indicator

lamp in the g button lights
up.
i Air-recirculation mode is activated
automatically at high outside
temperatures. When

air-recirculation mode
is activated automatically, the indicator
lamp in the g button is not lit.
Outside air is added after about 30
minutes.
X To switch off: press the g button.
The indicator

lamp in the g button goes
out.
i Air-recirculation mode switches off
automatically:
R after approximately five minutes if
outside temperatures

are less than about
41 ‡ (5 †)
R after approximately five minutes if
cooling with air dehumidification is
deactivated
R after approximately 30 minutes if outside
temperatures are over about
41 ‡ (5 †) Activating/deactivating the residual
heat function
It is

possible to make use of the residual heat
of the engine to continue heating the
stationary 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
regardless 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 in the
ignition lock or remove it.
X To activate: press the Á button.
The indicator

lamp in the Á button lights
up.
X To switch off: press the Á button.
The indicator

lamp in the Á button goes
out.
i Residual heat is deactivated
automatically:
R after about 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
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
could cause burns or frostbite to unprotected
skin in the immediate area of the air vents.
Always keep sufficient distance between
unprotected parts of the body and the air
vents. If necessary, use the air distribution 110
Setting the air vents
Climate control

conditions, drive only with at least one
window fully open at all times.
! Do not depress the accelerator pedal
when starting the engine.
Starting procedure X
Shift the automatic transmission to
position P.
The transmission position display in the
multifunction display shows P.
i Further information about the automatic
transmission (Y page 119).
i If you

depress the brake when starting the
engine, pedal travel is unusually long and
there is less pedal resistance.
X Make sure that the parking brake is
applied.
X Turn the SmartKey to position 3 in the
ignition lock

(Y page 115) and release it as
soon as the engine is running.
i You can
start the engine without preglow
if the engine is warm.
i You can also use the touch-start function.
To do this, turn the SmartKey to position 3
(Y page 115) and release it immediately.
The engine then starts automatically. Pulling away
Automatic transmission G
WARNING
It is dangerous to shift the automatic
transmission out of parking position
P or
neutral position N if the engine speed is
higher than

idle speed. If your foot is not firmly
on the brake pedal, the vehicle could
accelerate quickly forward or in reverse. You
could lose control of the vehicle and hit
someone or something. Only shift into gear
when the engine is idling normally and when
your right foot is firmly on the brake pedal. !
Only shift the automatic transmission to
reverse gear
R

or park position P when the
vehicle is stationary. Otherwise, the
automatic transmission could be damaged.
i It is only possible to shift the automatic
transmission from position P to a different
position if you depress the brake pedal.
Only then is the selector lever lock
released.
X Depress the brake pedal and keep it
depressed.
X Shift the automatic transmission to
position D or R.
i Before driving off, wait until the gear
change is fully completed.
X Release the parking brake ( Y page 128).
X Release the brake pedal.
X Carefully depress the accelerator pedal.
! Do not depress the accelerator pedal
while depressing the brake pedal. This
impairs engine performance and results in
premature wear on the brake system and
drivetrain.
! If a warning tone sounds and the
Release Park. Brake message appears
in the multifunction display, the parking
brake is still applied. Release the parking
brake.
i The vehicle

locks centrally once you have
pulled away. The locking knobs in the doors
drop down.
You can open the doors from the inside at
any time.
You can also deactivate the automatic
locking feature (Y page 161).
i Upshifts take place at higher engine
speeds after a cold start. This helps the
catalytic converter to reach its operating
temperature more quickly. 116
Driving
Driving and parking