Page 259 of 321
259 Practical hints
Flat tire
Inflating the spare wheel with
collapsible tire
Take the electric air pump out of the
rear cargo compartment (
page 238).
1Union nut
2Electrical plug
3Air hose with pressure gauge
4Vent screw
Open flap on air pump.
Pull out electrical plug2 and air hose
with the pressure gauge3.
Close the vent screw4.
Remove the valve cap from the spare
wheel tire valve.
Screw the union nut1 with air hose3
on to the tire valve.
Insert electrical plug 2 into the electri-
cal outlet in the front passenger foot-
well or rear cargo compartment
(page 158).
Start the engine.
Switch on the air pump.
Operate air pump until the pressure
gauge displays 61 psi (4.2 bar)
This takes about eight minutes for the
collapsible tire. The air hose 3 and the
union nut 1 can become hot during in-
flation. Please exercise appropriate
caution.
Switch off the air pump.
Turn off the engine.
If the tire pressure is above 61 psi
(4.2 bar), release excess tire pressure
using the vent screw4.
Warning!
G
Observe instructions on air pump label.
!Do not operate the electric air pump
longer than eight minutes without in-
terruption. Otherwise it may overheat.
You may operate the air pump again af-
ter it has cooled off.
Page 260 of 321
260 Practical hintsFlat tire
Detach the electric air pump.
Reinstall tire valve cap.
Store the electrical plug and the air
hose behind the flap and place the air
pump back in the rear cargo compart-
ment.
Warning!
G
Follow recommended inflation pressures.
Do not overinflate tires. Overinflated tires
can result in sudden deflation (blowout) be-
cause they are more likely to become punc-
tured or damaged by road debris, potholes
etc.
Do not underinflate tires. Underinflated tires
wear unevenly, adversely affect handling
and fuel economy, and are more likely to fail
from being overheated.
Do not overload the tires by exceeding the
specified vehicle capacity weight (as indicat-
ed by the label on the driver’s door latch
post). Overloading the tires can overheat
them, possibly causing a blowout.
Page 261 of 321
261 Practical hints
Battery
Battery
The battery is located in the engine com-
partment on the right-hand side.
Disconnecting the battery
Turn off all electrical consumers.
Open the hood (
page 202).
Disconnect the battery negative lead.
Remove the cover from the positive ter-
minal.
Disconnect the battery positive lead.
Warning!
G
Failure to follow these instructions can re-
sult in severe injury or death.
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.
!Never loosen or detach battery termi-
nal clamps while the engine is running
or the key is in the steering lock. Other-
wise the alternator and other electronic
components could be severely dam-
aged.
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.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
With a disconnected battery
y o u w i l l n o l o n g e r b e a b l e t o t u r n t h e k e y
in the steering lock
the selector lever will remain locked in
positionP
Page 262 of 321
262 Practical hintsBatteryRemoving the batteries
Remove the screw securing the bat-
tery.
Remove the battery support and brack-
et. Take out the battery.
Charging and reinstalling batteries
Charge battery in accordance with the
instructions of the battery charger
manufacturer.
Reinstall the charged battery. Follow
the previously described steps in re-
verse order.
Reconnecting the batteries
Turn off all electrical consumers.
Connect the positive lead and fasten its
cover.
Connect the negative lead.
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.
!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 (
page 112).
Set the date in trip computer
(page 172).
Calibrate the compass
(page 174).
Resynchronize the ESP
(page 225).
Resynchronize side windows
(page 136).
Resynchronize sliding/pop-up
roof*(
page 138).
Page 264 of 321
264 Practical hintsJump starting
Jump starting
If the battery is discharged, the engine can
be started with jumper cables and the bat-
tery of another vehicle. Observe the follow-
ing:
Jump starting should only be performed
when the engine and catalytic convert-
er are cold.
Do not start the engine if the battery is
frozen. Let the battery thaw out first.
Only jump start from batteries with the
same voltage rating (12V). Jump start-
ing with a more powerful battery could
damage the vehicle's electrical system,
which will not be covered by the Mer-
cedes-Benz Limited Warranty.
Use only jumper cables with sufficient-
cross-section, insulated terminal
clamps and polarity reversal protec-
tion.
Warning!
G
Failure to follow these directions will cause
damage to the electronic components, and
can lead to a battery explosion and severe
injury or death.
Never lean over batteries while connecting
or jump starting, 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 very explosive. Keep
flames or sparks away from battery, avoid
improper connection of jumper cables,
smoking etc.
Attempting to jump start a frozen battery
can result in it exploding, causing personal
injury.
Read all instructions before proceeding.
iJumper cables with polarity reversal
protection are available at any autho-
rized Mercedes-Benz Light Truck
Center.
Page 265 of 321
265 Practical hints
Jump starting
The battery is located in the engine com-
partment.
Make sure that the two vehicles do not
touch.
Turn off all electrical consumers.
Apply parking brake.
Shift selector lever to positionP.1Positive terminal
2Cable clamps
3Negative terminal
4Cover
Remove cover4 from positive terminal
on both vehicles.
Connect positive terminals1 on the
batteries with the jumper cables. Start
with the charged battery.
!Jump starting may only be performed
on the battery installed in the engine
compartment.
Avoid repeated and lengthy starting at-
tempts.
Do not attempt to start the engine us-
ing a battery quick charge unit.
If engine does not run after several un-
successful starting attempts, have it
checked at the nearest authorized
Mercedes-Benz Light Truck Center.
Excessive unburned fuel generated by
repeated failed starting attempts may
damage the catalytic converter.
Make sure the jumper cables do not
have loose or missing insulation.
Make sure the cable clamps do not
touch any other metal part while the
other end is still attached to a battery.
Warning!
G
Keep flames or sparks away from battery.
Do not smoke.
Observe all safety instructions and precau-
tions when handling automotive batteries
(page 261).
Page 266 of 321
266 Practical hintsJump starting
Let the engine of the assisting vehicle
run at idle speed.
Connect the negative terminals3 of
the batteries with the jumper cables.
Start with the charged battery.
Start the engine of the disabled vehi-
cle.Now you can again turn on the electrical
consumers. Do not turn on the lights under
any circumstances.
Remove the jumper cables first from
the negative terminals3 of the batter-
ies and then from the positive
terminals1.
Have the battery checked at the
nearest authorized Mercedes-Benz
Center.iThe vehicle cannot be started via
tow-start.
Page 268 of 321
268 Practical hintsTowing the vehicleWarning!
G
If circumstances require towing the vehicle
with all wheels on the ground, always tow
with a tow bar if:
the engine will not run
there is a malfunction in the power sup-
ply or in the vehicle’s electrical system
Prior to towing the vehicle with all wheels on
the ground, make certain that the key is in
steering lock position2.
If the key is left in steering lock position0
for an extended period of time, it can no
longer be turned in the switch. In this case,
the steering is locked. To unlock, remove
key from steering lock and reinsert.
Warning!
G
With the engine not running, there is no
power assistance for the braking and steer-
ing systems. In this case, it is important to
keep in mind that a considerably higher de-
gree of effort is necessary to brake and
steer the vehicle. Adapt your driving accord-
ingly.iTo signal turns while being towed with
hazard warning flasher in use, turn key
in steering lock to position2 and acti-
vate combination switch for left or right
turn signal in usual manner – only the
selected turn signal will operate.
Upon canceling the turn signal, the haz-
ard warning flasher will operate again.iThe vehicle cannot be started via
tow-start.
!When towing the vehicle with all wheels
on the ground, note the following:
With the automatic central locking acti-
vated and the key in steering lock
position2, the vehicle doors lock if the
left front wheel is turning at vehicle
speeds of approx. 9 mph (15 km/h) or
more.
To prevent the vehicle doors from lock-
ing, deactivate the automatic central
locking (
page 89).
Towing of the vehicle should only be
done using the towing eye. Never at-
tach tow cable, tow rope or tow rod to
vehicle chassis, frame or suspension
parts.
