Page 372 of 457

371 Practical hints
Unlocking/locking in an emergency
Unlocking the tailgateInsert the mechanical key into lock
cylinder2.
Turn the mechanical key counterclock-
wise to position1 and release it.
Remove the mechanical key.
Press lock cylinder2 and pull on door
handle3 to open the tailgate.
Locking the vehicle
If you cannot lock the vehicle with the
SmartKey, lock the vehicle with the
mechanical key carrying out the following
steps:
Close the front passenger door, the
rear doors and the tailgate.
Open the driver’s door.
Press the central locking switch in the
center console (
page 107).
The locking knobs on the front
passenger door, the rear doors and the
tailgate move down.
If the vehicle battery is disconnected or
drained:
Press down the locking knobs on
the front passenger door, the rear
doors and the tailgate manually.
Exit the vehicle.
1Unlocking in an emergency
2Lock cylinder
3Door handle
Warning!G
The tailgate swings open to one side. Always
make sure there is sufficient clearance for
tailgate.
Page 373 of 457
372 Practical hints
Unlocking/locking in an emergency
Close the driver’s door.
Slide the mechanical key out of the
SmartKey (
page 370).
Insert the mechanical key into the
driver’s door lock cylinder until it stops.
Turn the mechanical key clockwise.
The vehicle is locked.
Check if the tailgate is locked. If
necessary lock the tailgate with the
mechanical key.
Fuel filler flap
The emergency release is located on the
passenger side of the cargo compartment
behind the rear trim panel.
1Edge protection
2Rear trim panel
Open the tailgate.
Remove edge protection1 from the
door pillar.
Remove rear trim panel2.3Release strap
Pull release strap3 upwards.
The fuel filler flap is unlocked.
Open the fuel filler flap (page 264).
iThis procedure does not arm the anti-theft
alarm system, nor does it lock the fuel filler flap.
Page 375 of 457
374 Practical hints
Opening/closing in an emergency
Tilt/sliding sunroof
You can open or close the tilt/sliding
sunroof manually should an electrical
malfunction occur.
The tilt/sliding sunroof drive is located on
the driver’s side of the cargo compartment
behind the rear trim panel.
1Edge protection
2Rear trim panelOpen the tailgate.
Remove edge protection1 from the
door pillar.
Remove rear trim panel2.
3Key
4Screwdriver
Take the vehicle tool kit out of its
storage compartment (
page 366).
Take key3 and screwdriver4 out of
the vehicle tool kit.
Fit key3 into hexagon nut of drive.
Insert screwdriver4 (as a lever) into
hole of key3.
Turn screwdriver4 clockwise to
slide sunroof closed
raise sunroof at the rear
Turn screwdriver4 counterclockwise
to
slide sunroof open
lower sunroof at the reariDo not disconnect electrical connectors.
Page 382 of 457
381 Practical hints
Replacing bulbs
Left headlamp shown, right headlamp
laterally reversed
3Securing screw (headlamp)
4Adjusting screw (headlamp)
5Headlamp
Loosen and remove headlamp-securing
screws3.
Remove headlamp5.5Headlamp
6Bulb socket
Hold headlamp5, push gently onto
bulb socket6, and turn bulb
socket6 counterclockwise to its
stop.
Pull bulb socket6 out of
headlamp5.7Bulb
Pull bulb7 out of its bulb socket.
Insert the new bulb into the bulb
socket.
Hold headlamp5, insert bulb
socket6 into headlamp5, and turn
bulb socket6 clockwise to its stop.
Insert headlamp5 and install and
tighten headlamp-securing screws3.
Install headlamp trim panel2 and the
seal.
Install and tighten securing screws1.
iDo not turn adjusting screw4. If adjusting
screw4 is turned, the headlamp adjustment
must be checked at a Mercedes-Benz Light
Truck Center.
Page 383 of 457
382 Practical hints
Replacing bulbs
Front fog lamp bulb
Right front fog lamp shown, left front fog
lamp laterally reversed
1Securing screw (trim panel)
2Front fog lamp trim panel
Loosen and remove securing
screws1.
Remove front fog lamp trim panel2 in
direction of arrow and the seal.
Right front fog lamp shown, left front fog
lamp laterally reversed
3Securing screw (front fog lamp)
4Adjusting screw (front fog lamp)
5Front fog lamp
Loosen and remove front fog
lamp-securing screws3.
Remove front fog lamp5.5Front fog lamp
6Bulb socket
Hold front fog lamp5, push gently
onto bulb socket6, and turn bulb
socket6 counterclockwise to its
stop.
Pull bulb socket6 out of front fog
lamp5.
iDo not turn adjusting screw4. If adjusting
screw4 is turned, the front fog lamp adjust-
ment must be checked at a Mercedes-Benz Light
Truck Center.
Page 384 of 457
383 Practical hints
Replacing bulbs
7Bulb
Pull bulb7 out of its bulb socket.
Insert the new bulb into the bulb
socket.
Hold front fog lamp5, insert bulb
socket6 into front fog lamp5, and
turn bulb socket6 clockwise to its
stop.
Insert front fog lamp5 and install and
tighten front fog lamp-securing
screws3.
Install front fog lamp trim panel2 and
the seal.
Install and tighten securing screws1.Front turn signal lamp bulb
1Securing screw
2Turn signal lens
Loosen and remove securing
screws1.
Remove turn signal lens2.3Bulb
Press bulb3 gently into the socket,
turn counterclockwise and remove it.
Press the new bulb gently into the
socket and turn clockwise until it
engages.
Reinstall turn signal lens2.
Install and tighten securing screws1.
iG55AMG:
Remove the protective grille before replacing the
bulbs.
iDo not overtighten securing screws1.
Otherwise turn signal lens2 could be damaged.
Page 385 of 457
384 Practical hints
Replacing bulbs
Side marker lamp bulb
The following description applies to both,
the front and the rear side marker lamps.
Front side marker shown
1Securing screw
2Side marker lamp housing
Loosen and remove securing
screws1.
Remove side marker lamp housing2.2Side marker lamp housing
3Dust cover
Remove dust cover3.
Press catch aside and pull out the bulb
socket with the bulb from side marker
lamp housing2.4Bulb
Press gently onto bulb4 and turn
counterclockwise out of its bulb
socket.
Press the new bulb gently into the bulb
socket and turn clockwise until it
engages.
Insert the bulb socket back into side
marker lamp housing2.
Reinstall dust cover3.
Page 387 of 457

386 Practical hints
Replacing bulbs
Left tail lamp unit shown, right tail lamp
unit laterally reversed
3Turn signal lamp bulb
4Brake, tail, parking and standing lamp
bulb
5Tail, parking and standing lamp bulb
Press gently onto respective
bulb3,4, or5 and turn counter-
clockwise out of its bulb socket.
Press the new bulb gently into the bulb
socket and turn clockwise until it
engages.
Reinstall tail lamp lens2.
Install and tighten securing screws1.Rear fog lamp bulb/Backup lamp bulb
The following description applies to both,
the rear fog lamp and the backup lamp.
Rear fog lamp shown
1Securing screw
2Lamp lens
Loosen and remove securing
screws1.
Remove lamp lens2.3Bulb
Press gently onto bulb3 and turn
counterclockwise out of its bulb
socket.
Press the new bulb gently into the bulb
socket and turn clockwise until it
engages.
Reinstall lamp lens2.
Install and tighten securing screws1.
iDo not overtighten securing screws1.
Otherwise tail lamp lens2 could be damaged.
iDo not overtighten securing screws1.
Otherwise lamp lens2 could be damaged.