2012 MERCEDES-BENZ G-Class battery

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

Fuel
Additives ........................................ 274
Important safety notes
..................273
Premium-grade unleaded gasoline . 273
Refueling ........................................ 124
Specifications ................................ 274
Troubleshooting ............................. 127
Fuel/water separator
Service ........................................... 216
Fuel consumption
Notes ............................................. 129
Fuel filler cap (display message) .....174
Fuel filler flap Emergency release ........................ 126
Opening/closing ............................ 125
Fuel filter
Display message ............................ 174
Fuel level
Calling up the range (on-board
computer) ...................................... 163
Fuse allocation chart ........................238
Fuse box Battery case ................................... 239
Dashboard ..................................... 238
Front-passenger footwell ...............238
Transmission tunnel ....................... 239
Fuse extractor ................................... 238
Fuses Dashboard fuse box ....................... 238
Fuse allocation chart ..................... 238
Fuse box in the front-passenger
footwell .......................................... 238
Fuse box in the transmission
tunnel ............................................ 239
In the battery case ......................... 239
Notes ............................................. 237G
Garage door opener Clearing the memory

.....................207
Notes ............................................. 204
Opening/closing the garage door ..207
Programming the remote control ... 205
Gear or selector lever (cleaning
guidelines) ......................................... 221
Genuine Mercedes-Benz parts ......... 270Genuine wood trim and trim strips
(cleaning instructions)
......................221
Glove box ........................................... 189
Gradient-climbing capability
(maximum) ......................................... 139
GTW (Gross Trailer Weight)
(definition) ......................................... 263 H
Handbrake see Parking brake


Hazard warning lamps ........................91
Headlamp delayed switch-off see Exterior lighting delayed switch-off
Headlamps
Adding fluid to cleaning system .....214
Cleaning ......................................... 220
Cleaning system (function) .............. 91
Fogging up ....................................... 92
Protective grille ................................ 98
Headlamps (automatic) ......................89
Head restraints Adjusting (angle) .............................. 77
Adjusting (rear) ................................ 78
Installing/removing (rear) ................ 78
Luxury .............................................. 79
Resetting (front) ............................... 78
see NECK-PRO head restraints
Heating
see Climate control
Heating, windshield
see Windshield heating
High beam flasher ............................... 91
High-beam headlamps (display
message) ............................................ 169
High-mounted brake lamp Display message ............................ 168
Hill start assist .................................. 117
Hood Closing ........................................... 211
Display message ............................ 177
Opening ......................................... 210
Hydroplaning ..................................... 1328
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

produce an undesired effect on other
systems. Electronic malfunctions could
seriously impair the operating safety of your
vehicle.
Contact
an
authorized Mercedes-Benz Center
for repairs or modifications to electronic
components.
Other improper work or modifications on the
vehicle could also have a negative impact on
the operating safety of the vehicle.
Some safety systems only function when the
engine is running. You should therefore never
turn off the engine while driving. G
WARNING
Heavy
blows against the vehicle underbody or
tires/wheels may cause serious damage and
impair the operating safety of your vehicle.
Such blows can be caused, for example, by
running over an obstacle, road debris or a
pothole.
If you feel a sudden significant vibration or
ride disturbance,

or you suspect that damage
to your vehicle has occurred:
R turn on your hazard warning flashers.
R slow down carefully.
R drive with caution to an area which is a safe
distance from the road.
Inspect the vehicle underbody and tires/
wheels for possible damage. If the vehicle
appears unsafe, have it towed to the nearest
authorized Mercedes-Benz Center or other
qualified maintenance or repair facility for
further inspection or repairs. On-board diagnostics interface
G
WARNING
If you connect equipment to the on-board
diagnostics interface, it can affect the
operation of the vehicle systems. This can
impair the operating safety of your vehicle
while driving. There is a risk of accident. Do not connect any equipment to the on-
board diagnostics interface.
G
WARNING
Loose equipment or equipment cables which
are connected to the on-board diagnostics
interface can obstruct the area around the
pedals. The

equipment or the cables could get
between the pedals in the event of sudden
braking or acceleration. You may then no
longer be able to brake, operate the clutch or
accelerate as intended. There is a risk of
accident.
Do not attach any equipment or cables in the
driver footwell.
Connecting equipment to the on-board
diagnostics interface can lead to emissions
monitoring information being reset. This may
lead to the vehicle failing to meet the
requirements at the next special emissions
test or main inspection.
If the engine is switched off and equipment
which is connected to the on-board
diagnostics interface is used, the starter
battery may discharge.
The on-board diagnostics interface is only
intended for the connection of diagnostic
equipment at a qualified specialist workshop. Qualified specialist workshop
An authorized Mercedes-Benz Center is a
qualified specialist workshop. It has the
necessary specialist knowledge, tools and
qualifications to correctly carry out the work
required on

your vehicle. This is especially the
case for work relevant to safety.
Observe the notes in the Maintenance
Booklet.
Always have the following work carried out at
an authorized Mercedes-Benz Center:
R work relevant to safety
R service and maintenance work
R repair work20
Introduction

!
Avoid spinning the driven wheels for an
extended period with ESP ®
deactivated.
You could
otherwise damage the drivetrain.
X To activate: press button : until the
å warning lamp goes out in the
instrument cluster. EBD (electronic brake force
distribution)
i Observe the "Important safety notes"
section ( Y page 53).
EBD monitors and controls the brake
pressure on the rear wheels to improve
driving stability while braking. G
WARNING
If the EBD malfunctions, the brake system will
still function with full brake boost. However,
the rear wheels could lock up during
emergency braking situations, for example.
You could lose control of the vehicle and
cause an accident.
Adapt your driving style to the changed
driving characteristics. Theft deterrent locking systems
Immobilizer
The immobilizer prevents your vehicle from
being started without the correct key.
When leaving the vehicle, always take the
SmartKey with you and lock the vehicle. The
engine can be started by anyone with a valid
SmartKey that is left inside the vehicle.
X To activate: remove the SmartKey from
the ignition lock.
X To deactivate: switch on the ignition.
i The immobilizer is always deactivated
when you start the engine.
In the event that the engine cannot be
started when the starter battery is fully
charged, the immobilizer may be faulty. Contact an authorized Mercedes-Benz
Center or call 1-800-FOR-MERCedes (in
USA) or 1-800-387-0100
(in Canada). ATA (Anti-Theft Alarm system)
A visual and audible alarm is triggered if the
alarm system is armed and you open:
R a door
R a door using the mechanical key
R the rear door
R the hood
The alarm is also triggered if:
R the position of the vehicle is changed.
R a window is smashed.
The alarm is not switched off, even if you
close the open door that has triggered it, for
example.
i If the alarm stays on for more than 30
seconds, the emergency call system
mbrace (USA only) or TELEAID (Canada
only) initiates a call to the Customer
Assistance Center automatically. The
emergency call system initiates the call
provided that:
R you have subscribed to the mbrace/
TELEAID service.
R the mbrace/TELEAID service has been
activated properly.
R the required

mobile phone, power supply
and GPS are available. Theft deterrent locking systems
57
Safety 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 Please read the information on qualified
specialist workshops (Y page 20). SmartKey
Important safety notes
G
WARNING
When leaving the vehicle, always remove the
SmartKey from the ignition lock. Always take
the SmartKey with you and lock the vehicle.
Do not leave children unsupervised in the
vehicle, even if they are secured in a child
restraint system,

and do not give them access
to an unlocked vehicle. A child's unsupervised
access to a vehicle could result in an accident
and/or serious personal injury. They could:
R injure themselves on vehicle parts
R be seriously or fatally injured by extreme
heat or cold
R injure themselves or have an accident with
vehicle equipment that may still be in
operation even after the SmartKey has
been removed from the ignition, such as the
seat adjustment, steering wheel
adjustment or memory function.
If children open a door, they could cause
severe or even fatal injury to other persons; if
they get out of the vehicle, they could injure
themselves when doing so or be seriously or
even fatally injured by any passing traffic.
Do not expose the child restraint system to
direct sunlight. The child restraint system's
metal parts, for example, could become very hot, and a child could be burned on these
parts.
G
WARNING
Do not carry heavy or hard objects in the
passenger compartment or cargo
compartment unless they are firmly secured
in place.
Unsecured or improperly positioned cargo
increases a child's risk of injury in the event
of
R strong braking maneuvers
R sudden changes of direction
R an accident General notes
If you cannot lock or unlock the vehicle with
the SmartKey, either the battery in the
SmartKey is discharged, the SmartKey is
faulty or the starter battery is discharged.
X Check the battery in the SmartKey and
replace it if necessary (

Y page 62).
X Unlock the driver's door using the
mechanical key ( Y page 66).
X Lock the vehicle using the mechanical key
(Y page 66).
X Have the starter battery and battery
contacts checked at an authorized
Mercedes-Benz Center.
If the SmartKey is faulty, contact Roadside
Assistance or an authorized Mercedes-Benz
Center. SmartKey functions
General notes i
USA only:
This device complies with Part 15 of the
FCC Rules. Operation is subject to the
following two conditions:
1. This device may not cause harmful
interference, and 60
SmartKey
Opening/closing

2. This device must accept any interference
received, including interference that may
cause undesired operation.
Any unauthorized modification to this
device could void the user’s authority to
operate the equipment.
i Canada only:
This device complies with RSS-210 of
Industry Canada. Operation is subject to
the following two conditions:
1. This device may not cause interference,
and
2. this
device must accept any interference
received, including interference that may
cause undesired operation of the device.
Any unauthorized modification to this
device could void the user’s authority to
operate the equipment.
Locking and unlocking centrally The SmartKey centrally locks/unlocks:
R
the doors
R the rear door
R the fuel filler flap :
& To lock the vehicle
; % To unlock the vehicle
When unlocking, the turn signals flash once.
When locking, they flash three times.
X To unlock centrally: press the %
button. If you do not open a door or the tailgate within
approximately 40 seconds of unlocking the
vehicle:
R
the vehicle is locked again.
R the theft
deterrent locking system is armed
again.
X To lock centrally: press the & button. Changing the settings of the locking
system
You can change the setting of the locking
system in such a way that only the driver's
door and

the fuel filler flap are unlocked. This
is useful if you frequently travel on your own.
X To change the setting: press and hold
down the % and & buttons
simultaneously for approximately six
seconds until battery check lamp flashes
twice.
The SmartKey now functions as follows:
X To unlock the driver's door and fuel
filler flap: press the % button once.
X To unlock centrally: press the %
button twice.
X To lock centrally: press the & button. Restoring the factory settings
X Press the % and & buttons
simultaneously for approximately six
seconds until the battery check lamp
flashes twice. Mechanical key
General notes If the vehicle can no longer be unlocked with
the SmartKey, use the mechanical key.
If you use the mechanical key to unlock and
open the driver's door or the trunk lid, the SmartKey
61
Opening/closing Z

anti-theft alarm system will be triggered
(Y page 57).
X
To end the alarm: insert the key into the
ignition lock.
Removing the mechanical key X
Push release catch : in the direction of
the arrow and at the same time, remove
mechanical key ; from the SmartKey.SmartKey battery
Important safety notes Have the batteries changed at a qualified
specialist workshop.
G
WARNING
Batteries contain toxic substances.
Swallowing batteries can lead to serious
health issues or death.
Keep batteries out of the reach of children.
Seek medical attention immediately if a
battery is swallowed. G
WARNING
The SmartKey batteries contain perchlorate
material, which may require special handling
and regard for the environment. Observe
government disposal guidelines. California
residents, see www.dtsc.ca.gov/
HazardousWaste/Perchlorate/
index.cfm. Checking the battery
X
Press the & or % button.
The SmartKey
battery is working properly if
battery check lamp : lights up briefly.
If battery check lamp : does not light up
briefly during the test, the SmartKey battery
is discharged.
X Replace the SmartKey battery
(Y page 62).
i You can

obtain a SmartKey battery at any
authorized Mercedes-Benz Center.
i If the SmartKey battery is checked within
the signal range of the vehicle, pressing the
& or % button closes or opens the
vehicle.
Changing the battery You require a CR 2025 3 V cell battery.
X
Take the mechanical key out of the
SmartKey (Y page 61). X
Press mechanical key ; into the opening
in the SmartKey in the direction of the 62
SmartKey
Opening/closing