2007 MERCEDES-BENZ G55AMG key battery

371 Practical hints
Unlocking/locking in an emergency
Unlocking the tailgateInsert the mechanical key into lock
cylinder2.
Turn the mechanical key counterclock-
wise to position1 and release it.
Remove the mechanical key.
Press lock cylinder2 and pull on door
handle3 to open the tailgate.
Locking the vehicle
If you cannot lock the vehicle with the
SmartKey, lock the vehicle with the
mechanical key carrying out the following
steps:
Close the front passenger door, the
rear doors and the tailgate.
Open the driver’s door.
Press the central locking switch in the
center console (
page 107).
The locking knobs on the front
passenger door, the rear doors and the
tailgate move down.
If the vehicle battery is disconnected or
drained:
Press down the locking knobs on
the front passenger door, the rear
doors and the tailgate manually.
Exit the vehicle.
1Unlocking in an emergency
2Lock cylinder
3Door handle
Warning!G
The tailgate swings open to one side. Always
make sure there is sufficient clearance for
tailgate.


376 Practical hints
Replacing SmartKey batteries
If the batteries in the SmartKey are
discharged, the vehicle can no longer be
locked or unlocked. It is recommended to
have the batteries replaced at an autho-
rized Mercedes-Benz Light Truck Center.
Batteries contain materials that can harm
the environment if disposed of improperly.
Recycling of batteries is the preferred
method of disposal. Many states require
sellers of batteries to accept old batteries
for recycling.Replacement batteries: Lithium, type
CR 2025 or equivalent.
Remove the mechanical key from the
SmartKey (
page 370).
1Mechanical key
2Slide
3Battery compartment
Insert mechanical key1 in direction
of the arrow in side opening.
Using mechanical key1, push gray
slide2 to unlatch battery
compartment3.
Pull battery compartment3 out of the
housing in direction of the arrow.4Battery
5Contact spring
Remove discharged batteries4 in
direction of the arrow.
Using a lint-free cloth, insert new
batteries under contact spring5 with
the positive terminal (+) facing up.
Return battery compartment3 into
the housing until it locks into place.
Slide mechanical key1 back into the
SmartKey.
Check the operation of the SmartKey.
Warning!G
Keep the batteries out of reach of children.
If a battery is swallowed, seek medical help
immediately.
iWhen inserting the batteries, make sure
they are clean and free of lint.
iWhen replacing batteries, always replace
both batteries.
The required replacement batteries are available
at any Mercedes-Benz Light Truck Center.

397 Practical hints
Battery
Warning!G
Failure to follow these instructions can
result in severe injury or death.
Observe all safety instructions and precau-
tions when handling automotive batteries
(
page 396).
Never lean over batteries while connecting,
you might get injured.
Battery fluid contains sulfuric acid. Do not
allow this fluid to come in contact with eyes,
skin or clothing. In case it does, immediately
flush affected area with water and seek
medical help if necessary.
A battery will also produce hydrogen gas,
which is flammable and explosive. Keep
flames or sparks away from battery, avoid
improper connection of jumper cables,
smoking, etc.
Warning!G
Jump starting must only be done using the
jump-start terminals located in the engine
compartment (
page 400).
Warning!G
Do not place metal objects on the battery as
this could result in a short circuit.
Use leak-proof battery only to avoid the risk
of acid burns in the event of an accident.
!Never loosen or detach battery terminal
clamps while the engine is running or the
SmartKey is in the starter switch. Otherwise the
alternator and other electronic components
could be severely damaged.
Have the battery checked regularly at an
authorized Mercedes-Benz Light Truck Center.
Refer to Maintenance Booklet for maintenance
intervals or contact an authorized
Mercedes-Benz Light Truck Center for further
information.

398 Practical hints
Battery
Disconnecting, removing, reinstalling
and reconnecting the battery
Disconnecting, removing, reinstalling and
reconnecting the battery is a complicated
and technically demanding procedure that
also requires safety precautions to avoid
the risk of injury. We strongly recommend
that it should be performed by a qualified
technician only. If it is necessary to work
on the battery, contact a local authorized
Mercedes-Benz Light Truck Center or call
our Customer Assistance Center at
1-800-FOR-MERCedes (1-800-367-6372).
Charging the battery
If the battery is discharged, the battery can
be charged using the jump-start terminals
located in the engine compartment
(
page 400).
Charge the battery in accordance with
the instructions of the battery charger
manufacturer.
!Never invert the terminal connections!
!The battery, its filler caps and the vent tube
must always be securely installed when the
vehicle is in operation.
Warning!G
Never charge a battery while still installed in
the vehicle unless the accessory battery
charge unit* approved by Mercedes-Benz is
being used. Gases may escape during charg-
ing and cause explosions that may result in
paint damage, corrosion or personal injury.
An accessory battery charge unit* specially
adapted for Mercedes-Benz vehicles and
tested and approved by Mercedes-Benz is
available, permitting the charging of the
battery in its installed position. Contact an
authorized Mercedes-Benz Light Truck
Center for information and availability.
Charge battery in accordance with the sepa-
rate instructions for the accessory battery
charger*.
iWith a discharged battery

you will no longer be able to turn the
SmartKey in the starter switch

the gear selector lever will remain locked in
park positionP

402 Practical hints
Towing the vehicle
Warning!G
With the engine not running, there is no
power assistance for the brake and steering
systems. In this case, it is important to keep
in mind that a considerably higher degree of
effort is necessary to brake and steer the
vehicle. Adapt your driving accordingly.
!Towing of the vehicle should only be done
using the towing eye. Never attach tow cable,
tow rope or tow rod to vehicle chassis, frame or
suspension parts.
iWhen towing the vehicle with all wheels on
the ground, note the following:
With the automatic central locking activated and
the SmartKey in starter switch position2, the
vehicle doors lock if a wheel is turning at vehicle
speeds of approximately 9 mph (15 km/h) or
above.
To prevent the vehicle doors from locking,
deactivate the automatic central locking
(
page 155).
iTo signal turns while being towed with
hazard warning flasher in use, turn the SmartKey
in starter switch to position2 and activate
combination switch for left or right turn signal in
usual manner – only the selected turn signal will
operate.
Upon canceling the turn signal, the hazard
warning flasher will operate again.
iThe gear selector lever will remain locked in
park positionP and the SmartKey will not turn in
the starter switch if the battery is disconnected
or discharged. For more information, see “Bat-
tery” (
page 396) and “Jump starting”
(
page 399).
For information on manually unlocking the gear
selector lever, see (
page 373).

405 Practical hints
Fuses
Fuses
The electrical fuses in your vehicle serve to
switch off malfunctioning power circuits.
If a fuse is blown, the components and
systems secured by that fuse will stop
operating.If a newly inserted fuse blows again, have
the cause determined and rectified at an
authorized Mercedes-Benz Light Truck
Center.
The following aids are available to help you
replace fuses.

Fuse chart
The fuse chart explains the fuse
allocation and fuse amperages.
The fuse chart is located in the main
fuse box in the passenger compart-
ment (
page 406).

Spare fuses
The spare fuses are located in the main
fuse box in the passenger compart-
ment (
page 406).

Fuse extractor
The fuse extractor is located in the
vehicle tool kit in the rear footwell
(
page 366).The electrical fuses are located in different
fuse boxes:

in the passenger compartment on the
driver’s side (
page 406)

in the front passenger footwell
(
page 406)

in the middle tunnel (page 407)

in the battery box (page 408)
Before replacing fuses:
Apply parking brake (page 62).
Make sure the gear selector lever is set
to park positionP (
page 162).
Turn off all electrical consumers.
Turn off the engine (page 64).
Remove the SmartKey from the starter
switch.
Warning!G
Only use fuses approved by Mercedes-Benz
with the specified amperage for the system
in question and do not attempt to repair or
bridge a blown fuse. Using other than
approved fuses or using repaired or bridged
fuses may cause an overload leading to a
fire, and/or cause damage to electrical
components and/or systems. Have the
cause determined and remedied at an
authorized Mercedes-Benz Light Truck
Center.
iA blown fuse must be replaced by an
appropriate spare fuse (recognizable by its color
or the fuse rating given on the fuse) of the
amperage recommended in the fuse chart. Any
Mercedes-Light Truck Center will be glad to
advise you on this subject.

433 Index
Batteries
SmartKey (replacing) 376
Batteries, SmartKey
Check lamp 103
Checking 103
Battery box
Fuse box in 408
Battery discharged
Jump starting 399
Battery, vehicle 396
Charging 398
Disconnecting 398
Messages in display 344–345
Reconnecting 398
Reinstalling 398
Removing 398
Bead 304
Block heater (Canada only) 310
Blocking rear door window operation 86
B-pillar 412
Brake fluid 266, 425
Message in display 346
Brake lamp bulbs, left and right 378
Brake lamp, high mounted 378
Brake lamps
Messages in display 354Brake pads
Message in display 347
Brakes 246
Warning lamp 326–327
Break-in period 244
Brush guard 375
Lowering 375
Raising and securing 375
Bulbs, replacing
Additional turn signals 378
Backup lamps 378, 386
Brake lamps 378, 386
Front fog lamps 378, 382
Front lamps 378
Front turn signal lamps 378, 383
High beam lamps 378
High mounted brake lamp 378
License plate lamps 378, 387
Locator lighting lamps 378
Low beam lamps 378
Parking lamps 378, 380
Rear fog lamp 378, 386Rear lamps 378
Rear turn signal lamps 378
Side marker lamps 378, 384
Standing lamps 378, 380
Tail lamp assemblies 378
Tail lamp unit 385
C
Call priority, Tele Aid 235
Calling up
Maintenance service indicator
display 313
Range (distance to empty) 158
Capacities
Fuels, coolants, lubricants, etc. 422
Cargo area see Cargo compartment
Cargo compartment
Expanding 206
Tailgate 105
Tie-down rings 209
Cargo compartment cover blind 214
Installing 214
Removing 214
Rolling out 214
Rolling up 214
Cargo compartment lamps 127

440 Index
Immobilizer 96
Activating 96
Deactivating 96
Infant and child restraint systems 79
Installing 84
LATCH child seat anchors 83
Information button see Tele Aid
Inside rear view mirror
Auto-dimming 177
Installing
Cargo compartment cover blind 214
Infant and child restraint systems 84
Wiper blades 389
Instructions
Loading 208
Instrument cluster 26, 130
Coolant temperature gauge 131
Digital speedometer 140
Illumination 130
Lamps in 324–334
Multifunction display 133
Outside temperature 140
Outside temperature indicator 132
Selecting language 149
Instrument lighting 130
Instruments and controls see CockpitInterior lighting
Automatic operation 125
Delayed shut-off 154
Manual operation 126
Interior lighting, front 125
Interior lighting, rear 126
Interior rear view mirror
Adjusting 46
Intermittent wipe 60
Activating 60
Deactivating 60
Intermittent wiping 59
J
Jack 367
Jump starting 399K
Key
Messages in display 353
Key, mechanical 370
Key, SmartKey
Battery check lamp 102
Checking the batteries 103
Factory setting 102
Global locking 102
Global unlocking 102
Loss of 103
Positions in starter switch 39
Remote control 100
Restoring to factory setting 103
Selective setting 102
Starting the engine 54
Unlocking with 38
Keys 100
Kickdown (Automatic transmission) 166
Kilometers/miles in speedometer 149
Kilopascal 305
Km/h or mph in speedometer 149
L
Labels, identification 412
Lamp bulbs, exterior 377
Lamp in center console 337