Page 331 of 416
331 Practical hints
Replacing SmartKey batteries
Replacing SmartKey batteries
If the batteries in the SmartKey are dis-
charged, 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.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 re-
place both batteries.
The required replacement batteries are
available at any Mercedes-Benz Light
Truck Center.
Page 335 of 416

335 Practical hints
Replacing bulbs
Notes on bulb replacement
Use only 12 volt bulbs of the same type
and with the specified watt rating.
Switch lights off before changing a bulb
to prevent short circuits.
Always use a clean lint-free cloth when
handling bulbs.
Your hands should be dry and free of oil
and grease.
If the newly installed bulb does not
come on, visit an authorized
Mercedes-Benz Light Truck Center.
Have the LEDs for the following lamps re-
placed by an authorized Mercedes-Benz
Light Truck Center.
Additional turn signals in the exterior
rear view mirrors
High mounted brake lamp
Lamps in the exterior rear view mirrors
Warning!
G
Bulbs and bulb sockets can be very hot. Al-
low the lamp to cool down before changing
a bulb.
Keep bulbs out of reach of children.
Halogen lamps contain pressurized gas.
A bulb can explode if you:
touch or move it when hot
drop the bulb
scratch the bulb
Wear eye and hand protection.
iHave the headlamp adjustment
checked regularly by a Mercedes-Benz
Light Truck Center.
Do not turn the headlamp adjusting
screws. If the adjusting screws are
turned, the headlamp adjustment must
be checked by a Mercedes-Benz Light
Truck Center.
Page 344 of 416
344 Practical hintsReplacing wiper blades
Removing wiper blades
Fold the wiper arm forward.
1Safety tab
2Wiper blade
3Wiper arm
4Attachment link
Warning!
G
For safety reasons, switch off wipers and re-
move SmartKey from starter switch before
replacing a wiper blade. Otherwise, the mo-
tor could suddenly turn on and cause injury.
!Never open the hood when the wiper
arm is folded forward.
Hold on to the wiper when folding the
wiper arm back. If released, the force
of the impact from the tensioning
spring could crack the windshield.
Do not allow the wiper arms to contact
the windshield glass without a wiper
blade inserted.
Make certain that the wiper blades are
properly installed. Improperly installed
wiper blades may cause windshield
damage.
The wiper with air spoiler should be
mounted on the driver’s side
For your convenience, you should have
this work carried out by an authorized
Mercedes-Benz Light Truck Center.
Page 346 of 416

346 Practical hintsFlat 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 321) and the jack
(page 322).
Remove the spare wheel from the
spare wheel mounting bracket
(page 323).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
G55AMG:
Vehicles with different tire dimensions on
the front and rear axle: rim and tire size of
spare wheel and normal wheel differ.
Handling will be adversely affected when the
spare wheel is used.
Do not exceed the maximum speed of
50 mph (80 km/h).
Page 347 of 416

347 Practical hints
Flat tire
Mounting the spare wheel
Prepare the vehicle (
page 346).
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).
Page 349 of 416

349 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.
Page 350 of 416

350 Practical hintsFlat tireLowering the vehicle
Using the pump lever, open the lower-
ing screw on the jack approximately
one turn (
page 348).
The vehicle is resting fully on its own
weight.
Remove the jack.
After use, disassemble pump handle
(page 348) and store jack in the des-
ignated storage compartment
(page 322).
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 322) and the other vehicle
tools (
page 321).
After changing the wheel, secure the
damaged wheel on the spare wheel
mounting bracket (
page 324). 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).
Page 351 of 416

351 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
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 247).
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 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 bat-
tery 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*.