2007 MERCEDES-BENZ ML500 Page 16

503 Practical hints
Flat tire

Screw union nut5 onto the collaps-
ible tire valve.

Insert electrical plug3 into a power
outlet (
page 302).

Turn the SmartKey in the starter switch
to position1.
or

Vehicles with KEYLESS-GO*:
Press the KEYLESS-GO start/stop
button once without depressing the
brake pedal.

Press I on electric air pump switch2.
The electric air pump should now
switch on and inflate the collapsible
tire.

Inflate the collapsible tire to the recom-
mended tire inflation pressure given in
the “Technical data” section
(page 536).
This takes about 5 minutes for the col-
lapsible tire.

Press 0 on electric air pump switch2.

Turn the SmartKey in the starter switch
to position0.
or

Vehicles with KEYLESS-GO*:
Press the KEYLESS-GO start/stop
button twice without depressing the
brake pedal.

If the tire inflation pressure is above
the recommended tire inflation pres-
sure given in this Operator’s Manual,
release excess tire inflation pressure
using the vent screw.
!
The cigarette lighter* (
page 300) or the
power outlet in the front center console
(
page 302) is not designed for use with the
electric air pump. Use the power outlet in the
rear center console or in the cargo compartment
(page 303) for electric air pump operation.
Warning!
G
Air hose4 and union nut5 can become
hot during inflation. Exercise proper caution
to avoid burning yourself when using the
equipment.!
Do not operate the electric air pump longer
than 8 minutes without interruption. Otherwise it
may overheat.
You may operate the electric air pump again
after it has cooled off.
!
Please compare the recommended tire
inflation pressure for your vehicle with the tire
inflation pressure on the yellow label located on
the spare wheel rim.
If the tire inflation pressure on the yellow label
on the spare wheel rim differs from the values
given in this Operator’s Manual, inflate the tire to
the recommended tire inflation pressure given
on the yellow label on the spare wheel rim.


504 Practical hintsFlat tire
Detach the electric air pump.

Store the electrical plug and the air
hose behind the flap and place the
electric air pump back in the cargo
compartment.Lowering the vehicle

Lower vehicle by turning crank coun-
terclockwise until vehicle is resting ful-
ly on its own weight.

Remove the jack.1-5Wheel 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
110 lb-ft (150 Nm).
Warning!
G
Follow recommend 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.
Warning!
G
Vehicles with collapsible tire
(ML 63 AMG only):
Inflate collapsible tire only after the wheel is
properly mounted.
Inflate the collapsible tire using the electric
pump (
page 502) before
lowering the
vehicle.
Warning!
G
Have the tightening torque checked after
changing a wheel. The wheels could come
loose if they are not tightened to a torque of
110 lb-ft (150 Nm).


506 Practical hintsBleeding the fuel system (diesel engine only)Driving the vehicle until the fuel tank is
empty is not recommended. Otherwise, air
may be sucked into the fuel system. If this
happens, the? malfunction indicator
lamp (USA only) or the± malfunction
indicator lamp (Canada only) comes on
and the engine may not start immediately
after refueling the vehicle.
After refueling:
Make sure the automatic transmission
is set toP.
The gear position indicator in the multi-
function display should be on
P.

Do not depress the accelerator.

Turn the SmartKey in the starter switch
to position 2 for at least 10 seconds
(page 40).

Return the SmartKey in the starter
switch to position 0 (
page 40).

Turn the SmartKey in the starter switch
to position3 (
page 40) and hold it
there for a maximum of 40 seconds or
until the engine runs surge-free.
If the engine does not start:

Wait for approximately 2 minutes.

Turn the SmartKey in the starter switch
to position3 (
page 40) and hold it
there for a maximum of 40 seconds or
until the engine runs surge-free.
If the engine still does not start, do not
make any further attempts to start the
engine. Contact an authorized
Mercedes-Benz Light truck Center or call
Roadside Assistance (page 312).
i
Vehicles with KEYLESS-GO*: If necessary,
remove the KEYLESS-GO start/stop button from
the starter switch (
page 40).
i
When the ?malfunction indicator lamp
(USA only) or the ±malfunction indicator
lamp (Canada only) has been illuminated for the
above condition, it will remain illuminated until
the engine was cycled on and off four times in a
row.

508 Practical hintsBattery!
The battery is a valve-regulated lead acid
(VRLA) battery, also referred to as “fleece” bat-
tery. Such batteries do not require topping-up of
the electrolyte level. VRLA batteries therefore do
not have cell caps and the battery cover is
non-removable. Do not attempt to open the bat-
tery as otherwise the battery will be damaged.
Even though VRLA batteries do not require top-
ping-up of the electrolyte level and cannot be
opened to check the electrolyte level, the bat-
tery condition must be checked periodically by
performing a battery conductance test. Refer to
Maintenance Booklet for battery condition test-
ing intervals.
As with any other battery, the battery may dis-
charge if the vehicle is not operated for an ex-
tended period of time. You can connect a battery
maintenance charge unit tested and approved
for use on your vehicle model or disconnect the
battery to prevent battery discharge. Contact an
authorized Mercedes-Benz Light Truck Center
for more information.
!
The factory-equipped VRLA battery is
leak-proofed. Only use a battery as replacement
that has the same security features and is of
identical size, voltage, and capacity as the
factory-equipped battery.
The battery, the battery ventilation hose
(
page 513) and the lateral plug (
page 513)
must always be securely installed when the
vehicle is in operation.
Warning!
G
Jump starting must only be done using the
jump-start contacts located in the engine
compartment (
page 515).
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 507).
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.

509 Practical hints
Battery
Disconnecting, removing, reinstalling and reconnecting the battery
Step 1 (Disconnecting)

Set the automatic transmission to
positionP (
page 187).

Firmly depress the parking brake
(page 65).

Turn off the engine (
page 66).

Leave the ignition switched on
(page 40).
!
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 by an
authorized Mercedes-Benz Light Truck Center.
Contact your authorized 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
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
be performed by a qualified technician or an
authorized Mercedes-Benz Light Truck
Center only. Please read the instructions
fully before beginning operation and only
undertake it if you feel fully capable of
performing all of the tasks involved as de-
scribed in these instructions. Observe all
safety instructions and precautions when
handling automotive batteries
(page 507). Performing the tasks involved
incorrectly can cause damage to the vehicle
and impair the operating safety of the
vehicle, and/or cause severe injury to you
or others.
i
With a disconnected battery you will no
longer be able to turn the SmartKey in the starter
switch and pressing the KEYLESS-GO*
start/stop button will have no effect.
i
If your battery is discharged, the vehicle
must be jump started (
page 515) using the
jump start contacts in the engine compartment,
or an accessory battery charge unit* approved
by Mercedes-Benz must be connected using the
jump start contacts in the engine compartment
(see separate instructions for the accessory bat-
tery charge unit*) before any of the following
steps can be performed. If the battery cannot be
jumped or charged, please contact an
authorized Mercedes-Benz Light Truck Center.


510 Practical hintsBattery
Switch off all electrical consumers.

Read and observe safety instructions
and precautions (
page 507).

Open the front passenger door.

Move the front passenger seat to the
most forward position (
page 44).Step 2 (Disconnecting)
1Battery cover

Enter the rear passenger compartment
and remove main battery cover1.Step 3 (Disconnecting)
2Perforated floor carpet

Cut the floor carpet2 along the
dotted white line (see illustration) until
you reach the perforated part. Start
cutting at the point indicated by the
arrows. Cut carpet using a sharp object
(knife etc.).

Enter the front passenger compart-
ment.

Move the front passenger seat to the
most rearward position (
page 44).
i
If the vehicle battery is discharged and you
had the vehicle jump started:


Leave the engine running.


Complete step 1, starting with switching off
all electrical consumers.


Continue with step 2.


When the front passenger seat is in the most
forward position, turn off the engine.
i
Open doors only when conditions are safe to
do so.


511 Practical hints
Battery
2Perforated floor carpet, unfolded
Fold the floor carpet piece2 in
direction of the arrow.

Move the front passenger seat to the
most forward and upward position
again (
page 44).

Switch off the ignition (
page 40).

Remove SmartKey from starter switch.
Vehicles with KEYLESS-GO*:
Make sure the vehicle’s on-board
electronics have status0 (Turn off
the engine or all electrical systems
using the KEYLESS-GO start/stop
button. Open the driver’s door. With
the driver’s door open, the vehicle’s
on-board electronics have status0,
same as with the SmartKey
removed from the starter switch).

Enter the rear passenger compartment
again.Step 4 (Disconnecting)
3Air channel
4Clip with pin insert

Pull pin out of clip4 in direction of
arrow.

Pull clip with pin4 outwards.

Remove air channel3 by pulling it out
in direction of arrow.
i
If the vehicle battery is discharged and you
had the vehicle jump started, turn off the engine.

513 Practical hints
Battery
Step 8 (Removing)
cBattery
Tilt the batteryc with the negative
terminal side upwards.

Take out the battery maintaining its
tilted position in the direction of the
arrow.Step 9 (Reinstalling)

Carry out step 8 in reverse order
(page 513).
Battery, shown removed for illustration9Battery ventilation hose
dVent plug

Carry out step 10 to reconnect the
battery (
page 513).

Follow steps 5 to 1 in reverse order to
completely reinstall the battery
(page 512) to (
page 509).
Step 10 (Reconnecting)

If the battery has been removed, first
carry out step 8 in reverse order
(page 513).

Open the driver’s door.

Make sure all electrical consumers are
turned off.

Make sure the SmartKey is removed
from the starter switch.
Vehicles with KEYLESS-GO*:
Make sure the vehicle’s on-board
electronics have status0 (Open the
driver’s door. With the driver’s door
open, the vehicle’s on-board elec-
tronics have status0, same as with
the SmartKey removed from the
starter switch (
page 39)).
!
The battery, the battery ventilation hose9
and the lateral plugd (
page 513) must
always be securely installed when the vehicle is
in operation.