2004 MERCEDES-BENZ G55AMG Owner's Manual

305 Practical hints
Replacing wiper blades
Installing wiper blades
Guide wiper blade2 so that opening
goes through wiper arm3.

Press wiper blade2 into arch of wiper
arm3 until locking spring1 engages
in attachment link4.

Fold the wiper arm back to rest on the
windshield.

306 Practical hintsFlat tire
Flat tirePreparing the vehicle
Park the vehicle as far as possible from
moving traffic on a hard surface.

Turn on the hazard warning flashers.

Engage the steering wheel lock in the
straight ahead position and set the
parking brake.

Move the gear selector lever toP.

Have any passenger exit the vehicle at
a safe distance from the roadway.

Remove the vehicle tool kit
(page 283) and the jack
(page 284).

Remove the spare wheel from the
spare wheel mounting bracket
(page 285).Information on spare wheel
When you replace the vehicle’s tires, you
can use the spare wheel as a regular wheel
if:


it is not more than six years old


rim and tire are the same model as the
regular wheels
Warning!
G
For your safety, remove spare wheel from
the spare wheel mounting bracket before
undertaking any further steps.
Warning!
G
If the spare tire is more than six years old or
is not the same model as the regular tires,
have the spare tire replaced with a new tire
at the nearest Mercedes-Benz Light Truck
Center.
Never operate the vehicle with more than
one spare tire.
Warning!
G
G 55 AMG only
Vehicles with different tire dimensions on
the front and rear axle: rim and tire size of
spare wheel and normal wheel differ. Han-
dling will be adversely affected when the
spare wheel is used.
Do not exceed the maximum speed of
50 mph (80 km/h).

307 Practical hints
Flat tire
Mounting the spare wheel
Prepare the vehicle (
page 306).
Lifting the vehicle

Prevent the vehicle from rolling away
by blocking wheels with wheel chocks
(not included) or other sizable objects.
When changing wheel on a level surface:

Place one chock in front of and one be-
hind the wheel that is diagonally oppo-
site to the wheel being changed.
When changing wheel on a hill:

Place chocks on the downhill side
blocking both wheels of the other axle.
Wheel wrench
On wheel to be changed, loosen but do
not yet remove the wheel bolts (ap-
proximately one full turn with wrench).
Warning!
G
The jack is designed exclusively for jacking
up the vehicle under the axle housing. To
help avoid personal injury, use the jack only
to lift the vehicle during a wheel change.
Never get beneath the vehicle while it is sup-
ported by the jack. Keep hands and feet
away from the area under the lifted vehicle.
Always firmly set parking brake and block
wheels before raising vehicle with jack.
Do not disengage parking brake while the
vehicle is raised. Be certain that the jack is
always vertical (plumb line) when in use, es-
pecially on hills. Always try to use the jack
on level surface. Make sure the jack is posi-
tioned correctly under the axle housing. Al-
ways lower the vehicle onto sufficient
capacity jackstands before working under
the vehicle.
If the vehicle is not raised as described, it
could slip off the jack as a result of vibra-
tions (e.g. opening or closing a door or the
tailgate).

308 Practical hintsFlat tirePump handle (three pieces)1Indent for activation of release bolt2
Assemble the pump handle for the
jack. The pump handle is located in the
vehicle tool kit.
Jack2Release bolt
Close release bolt2.
To do so, turn indent1 to the right in
the pump lever until its stop.

Place jack on firm ground.

Position jack under the axle housing,
so that it is always vertical (plumb-line)
as seen from the side, even if the vehi-
cle is parked on an incline.
Be certain the jack arm is positioned
correctly under the axle housing (axle
must fall into jack contour).

Jack up the vehicle by pumping (arrow)
until the wheel is clear of the ground.
Never start engine while vehicle is
raised.
iNever turn release bolt2 more than
one or two revolutions. Hydraulic fluid
can otherwise escape.

309 Practical hints
Flat tire
Removing the wheel
Remove the wheel bolts.

Remove the wheel.Mounting the new wheel

Clean contact surfaces of wheel and
wheel hub.

Push the wheel onto the wheel hub and
press firmly.

Insert wheel bolts and tighten them
slightly.
!Do not place wheel bolts in sand or dirt.
This could result in damage to the bolt
and wheel hub threads.Warning!
G
Make sure no one is injured when removing
the wheel.
Grip wheel from the sides.
Keep hands from beneath the wheel.
Warning!
G
Always replace wheel bolts that are dam-
aged or rusted.
Never apply oil or grease to wheel bolts.
Damaged wheel hub threads should be re-
paired immediately. Do not continue to drive
under these circumstances! Contact an au-
thorized Mercedes-Benz Light Truck Center
or call Roadside Assistance.
Incorrect wheel bolts or improperly tight-
ened wheel bolts can cause the wheel to
come off. This could cause an accident.
Make sure to use the correct wheel bolts.
Warning!
G
Use only genuine equipment
Mercedes-Benz wheel bolts. Other wheel
bolts may come loose.
Do not tighten the wheel bolts when the ve-
hicle is raised. Otherwise the vehicle could
tip over.

310 Practical hintsFlat tireLowering the vehicle
Using the pump lever, open the lower-
ing screw on the jack approximately
one turn (
page 308).
The vehicle is resting fully on its own
weight.

Remove the jack.
After use, disassemble pump handle
(page 308) and store jack in the des-
ignated storage compartment
(page 284).
1-5 Wheel bolts

Tighten the five wheel bolts evenly, fol-
lowing the diagonal sequence illustrat-
ed (1 to 5), until all bolts are tight.
Observe a tightening torque of 97 lb-ft
(130 Nm).

Press the jack piston in again and close
the lowering screw. Store the jack
(page 284) and the other vehicle
tools (
page 283).

After changing the wheel, secure the
damaged wheel on the spare wheel
mounting bracket (
page 286). Make
sure the wheel cannot come loose.

Check the tire inflation pressure and
correct it if necessary.
A table with the tire pressure values for
your vehicle is located on the fuel filler
flap.
Warning!
G
Have the tightening torque checked after
changing a wheel as soon as possible. The
wheels could come loose if they are not
tightened to a torque of 97 lb-ft (130 Nm).

311 Practical hints
Battery
Battery
The battery is located in front of the rear
seat bench and below the cup holder
Batteries contain materials that can harm
the environment if disposed of improperly.
Large 12 volt storage batteries contain
lead.
Recycling of batteries is the preferred
method of disposal. Many states require
sellers of batteries to accept old batteries
for recycling.
Charging the battery
Have the battery removed at a
Mercedes-Benz Light Truck Center.
If you charge the battery yourself, make
sure to comply with the operating instruc-
tions for your battery charger.
Warning!
G
Failure to follow these instructions can re-
sult in severe injury or death.
Observe all safety instructions and precau-
tions when handling automotive batteries
(page 235).
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
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.
Warning!
G
Never charge a battery while still installed in
the vehicle. Gases may escape during charg-
ing and cause explosions that may result in
paint damage, corrosion or personal injury.!Have the battery checked regularly by
an authorized Mercedes-Benz Light
Truck Center.
Refer to Service Booklet for mainte-
nance intervals or contact your autho-
rized Mercedes-Benz Light Truck
Center for further information.

312 Practical hintsBatteryDisconnecting the battery
Turn off all electrical consumers.

Disconnect the battery negative lead.

Remove the cover from the positive ter-
minal.

Disconnect the battery positive lead.

Remove the breather hose from the
battery.
Reconnecting the battery
Turn off all electrical consumers.

Connect the positive lead and fasten its
cover.

Connect the negative lead.

Install the breather hose.
!Never loosen or detach battery termi-
nal clamps while the engine is running
or the SmartKey is in the starter switch.
Otherwise the alternator and other
electronic components could be se-
verely damaged.
iWith a disconnected battery

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


the gear selector lever will remain
locked in positionP
!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.
iThe following procedures must be car-
ried out following any interruption of
battery power (e.g. due to reconnec-
tion):

Set the clock (see COMAND opera-
tor’s manual).


Resynchronize the front seat head
restraints and seat adjustment fore,
aft (
page 95).


Synchronize the ESP (
page 263).