Page 347 of 561

346 Operation
Engine compartment
The coolant expansion tank is located on
the driver’s side of the engine compart-
ment.
1Cap
2Coolant expansion tank
3Indicator wall
4Coolant level
Using a rag, turn cap1 slowly approx-
imately one half turn counterclockwise
to release any excess pressure.
Continue turning cap1 counterclock-
wise and remove it.
Coolant level4 is correct if the level:
for cold coolant: reaches the top of
indicator wall3 visible through the
filling opening
for warm coolant: is approximately
0.6 in (1.5 cm) higher
Add coolant as required.
Replace and tighten cap1.
For more information on coolant, see
“Coolants” (
page 528).Windshield/rear window washer
system and headlamp cleaning
system*
The windshield washer reservoir is located
in the engine compartment.
1Cap for windshield washer reservoir
Fluid for the windshield/rear window
washer system and the headlamp cleaning
system* is supplied from the windshield
washer reservoir. It has a capacity of 8.1
US qt (7.7 l).
Page 452 of 561
451 Practical hints
Where will I find ...?
Screw-type vehicle jack
Storage position
Turn crank handle in the direction of
arrow as far as it will go.
Operational position
Turn crank handle clockwise.Before storing the vehicle jack in its
storage compartment:
The vehicle jack should be fully
collapsed.
The handle must be folded in (storage
position).
Scissors-type vehicle jack
Storage position
Take the reversible ratchet out of the
vehicle tool kit.
Operational position
1Scissors-type vehicle jack
2Reversible ratchet
Attach reversible ratchet2 to vehicle
jack in such a way that the wordUP
can be seen.
Before storing the vehicle jack in its stor-
age compartment:
It should be fully collapsed (storage
position).
The ratchet must be removed.
Page 454 of 561

453 Practical hints
Where will I find ...?
The Minispare wheel is located underneath
the cargo compartment floor
(
page 448).
Removing Minispare wheel
1Retaining screw
2Storage well casing
3Minispare wheelFor access the Minispare wheel, see “Vehi-
cle tool kit” (
page 448).
Loosen retaining screw1 by turning it
counterclockwise.
Remove storage well casing2.
Remove Minispare wheel3.
Collapsible tire (ML 63 AMG only)
iFor information on how to mount the
Minispare wheel, see “Mounting the spare
wheel” (
page 479).
iRemove Minispare wheel to gain access to
remaining tools in the vehicle tool kit
(
page 448).
Warning!G
The dimensions of the collapsible tire are
different from those of the road wheels. As
a result, the vehicle handling characteristics
change when driving with a collapsible tire
mounted. Adapt your driving style accord-
ingly.
The collapsible tire is for temporary use
only. When driving with a collapsible tire
mounted, ensure proper tire inflation
pressure and do not exceed a vehicle speed
of 50 mph (80 km/h).
Drive to the nearest Mercedes-Benz Light
Truck Center as soon as possible to have the
collapsible tire replaced with a regular road
wheel.
Never operate the vehicle with more than
one collapsible tire mounted.
Do not switch off the ESP
® when a
collapsible tire is mounted.
Page 455 of 561
454 Practical hints
Where will I find ...?
The collapsible tire is located underneath
the cargo compartment floor
(
page 448).
Removing the collapsible tire
1Electric air pump
2Collapsible tire
3Vehicle tool kit storage well casing
4Alignment bolt
5Towing eye bolt
6Wheel wrenchFor access the collapsible tire, see “Vehi-
cle tool kit” (
page 448).
Remove the vehicle tool kit storage
well casing3.
7Retaining screw
Loosen retaining screw7 by turning it
counterclockwise.
Remove collapsible tire2.
iFor information on how to mount the
collapsible tire, see “Mounting the spare wheel”
(
page 479).
iRemove collapsible tire to gain access to
remaining tools in the vehicle tool kit
(
page 448).
Page 456 of 561
455 Practical hints
Unlocking/locking in an emergency
Unlocking/locking in an emergency
Unlocking the vehicle
If you cannot unlock the vehicle with the
SmartKey or KEYLESS-GO*, open the
driver’s door using the mechanical key.Removing the mechanical key
1Mechanical key locking tab
2Mechanical key
Move locking tab1 in direction of
arrow.
The mechanical key2 comes out.
Slide mechanical key2 out of the
housing.Unlocking the driver’s door
Insert mechanical key2 into the
driver’s door lock until it stops.
Turn mechanical key2 counterclock-
wise to position1 and hold it there.
Pull the door handle until the locking
knob moves up (
page 118).
The driver’s door is unlocked.
Pull the door handle once more to open
the driver’s door.
iUnlocking the driver’s door with the
mechanical key will trigger the anti-theft alarm
system.
To cancel the alarm, insert the SmartKey or
SmartKey with KEYLESS-GO* in the starter
switch.
1Unlocking
2Mechanical key
Page 468 of 561
467 Practical hints
Replacing bulbs
Turn cover1 counterclockwise.
Remove cover1.
Turn bulb socket2 counterclockwise.
Pull bulb socket2 out of the
headlamp housing.
Pull the low beam bulb out of bulb
socket2.
Insert the new low beam bulb into bulb
socket2.
Insert bulb socket2 into the
headlamp housing.
Turn bulb socket2 clockwise until it
engages.
Place cover1 on the opening in the
headlamp housing.
Turn cover1 clockwise until it engag-
es.Bi-Xenon* low beam/high beam
headlampHigh beam bulb (halogen headlamp)
1High beam headlamp cover
2Bulb socket for high beam headlamp
Warning!G
Do not remove the low beam/high beam
cover for the Bi-Xenon* headlamp. Because
of high voltage in Xenon* lamps, it is danger-
ous to replace the bulb or repair the lamp
and its components. We recommend that
you have such work done by a qualified
technician.
Page 469 of 561

468 Practical hints
Replacing bulbs
Turn cover1 counterclockwise.
Remove cover1.
Turn bulb socket2 counterclockwise.
Pull bulb socket2 out of the
headlamp housing.
Pull the high beam bulb out of bulb
socket2.
Insert the new high beam bulb into bulb
socket2.
Insert bulb socket2 into the
headlamp housing.
Turn bulb socket2 clockwise until it
engages.
Place cover1 on the opening in the
headlamp housing.
Turn cover1 clockwise until it engag-
es.Turn signal lamp bulb
1Bulb socket for turn signal lamp
Turn bulb socket1 counterclockwise.
Pull bulb socket1 out of the
headlamp housing.
Pull the turn signal bulb out of bulb
socket1.
Insert the new turn signal bulb into bulb
socket1.
Insert bulb socket1 into the
headlamp housing.
Turn bulb socket1 clockwise until it
engages.Parking and standing lamp bulb
Turn bulb socket3 (page 466)
counterclockwise.
Pull bulb socket3 out of the
headlamp housing.
Pull the bulb out of bulb socket3.
Insert the new bulb into bulb
socket3.
Insert bulb socket3 into the
headlamp housing.
Turn bulb socket3 clockwise until it
engages.
Page 470 of 561

469 Practical hints
Replacing bulbs
Side marker lamp bulb
Turn bulb socket5 (page 466)
counterclockwise.
Pull bulb socket5 out of the
headlamp housing.
Pull the side marker bulb out of bulb
socket5.
Insert the new side marker bulb into
bulb socket5.
Insert bulb socket5 into the
headlamp housing.
Turn bulb socket5 clockwise until it
engages.Front fog lamp bulbs
Removing front fog lamp cover:
1Cover
2Front fog lamp or corner-illuminating
front fog lamp*
Insert a suitable object (e.g. screwdriv-
er) at point indicated by the arrow and
pry out cover1.
Cover1 is released.
Swing cover1 outwards and take it
off.
Removing front fog lamp cover (Vehicles
with AMG Sport Package* or ML 63 AMG):
1Cover
2Front fog lamp
Use a suitable object (e.g. hook or a
screwdriver) and place the hook or
screwdriver carefully between lower
end of cover and bumper.
!If not done carefully and properly, damage
to the bumper can result. We therefore recom-
mend that you have this work carried out by an
authorized Mercedes-Benz Light Truck Center.