Page 329 of 399
329 Practical hints
Unlocking/locking in an emergency
SmartKey/SmartKey with KEY-
LESS-GO*
1Mechanical key
2Battery compartment
Replacement batteries: Lithium, type
CR 2025 or equivalent.
Remove mechanical key1
(page 327).
Insert the mechanical key in the side
opening and push the gray slide.
Battery compartment2 is unlatched.
Pull battery compartment2 out of the
key housing in direction of arrow.
3Battery
4Contact spring
Remove the batteries.
Using a lint-free cloth, insert new bat-
teries under the contact spring with the
plus (+) side facing up.
Return battery compartment into hous-
ing until it locks into place.
Fuel filler flap emergency release
1Release knob
Remove right-side tail trim.
Turn release knob1 clockwise (arrow).
The fuel filler flap can know be opened.
iWhen changing batteries, always re-
place both batteries.
The required replacement batteries are
available at any authorized
Mercedes-Benz Center.
Page 330 of 399
330 Practical hintsUnlocking/locking in an emergencyManually unlocking the transmission selector lever
In the case of power failure, the transmis-
sion selector lever can be manually un-
locked, e.g. to tow the vehicle.
1Pin
The selector lever can be manually un-
locked from position P in the event of an
electrical failure, e.g. to tow the vehicle.
Open the storage compartment in the
center console (
page 229).
Take out the cup holder*.
Using two fingers in the horizontal slot
at the upper rear side of the cup holder,
lift cup holder upwards to remove.
Hold the cover at a 45° angle.
Insert a suitable object 1 (e.g. a pin)
through the hole and press the pin
downward.
Remove pin 1.
iThe selector lever is locked again when
moving it to positionP.
Page 331 of 399
331 Practical hints
Opening/closing in an emergency
Opening/closing in an emergency
Sliding/pop-up roof* or panorama sliding/pop-up roof*
You can open or close the sliding/pop-up
roof manually should an electrical malfunc-
tion occur.
The sliding/pop-up roof drive is located
behind lens1 of the interior overhead
light.
1Screen
Fold screen1 down.
Obtain crank2.
Insert crank2 through hole1.
Turn crank2 clockwise to:
Slide roof closed
Raise roof at the rear
Turn crank2 counterclockwise to:
slide roof open
lower roof at the rearThe sliding/pop-up roof must be resyn-
chronized after being operated manually
(
page 189).
iDo not disconnect the electrical con-
nectors.
Page 332 of 399

332 Practical hintsReplacing bulbs
Replacing bulbsSafe vehicle operation depends on proper
exterior lighting and signaling. It is there-
fore essential that all bulbs and lamp as-
semblies are in good working order at all
times.
Correct headlamp adjustment is extremely
important. Have headlamps checked and
readjusted at regular intervals and when a
bulb has been replaced. See your autho-
rized Mercedes-Benz Center for headlamp
adjustment.
Bulbs Front lamps
iBackup bulbs will be brought into use
when the following lamps malfunction:
Standing lamps
Tail lamps
Lamp
Type
1
Additional turn sig-
nal lamps
LED
2
Turn signal lamp
1156 NA
3
Side marker lamp
W 5 W
4
Low beam
H7 (55 W)
Bi-Xenon*
1
D2S-35 W
1Vehicles with Bi-Xenon headlamps*: Low beam
and high beam use the same D2S-35W lamp. For
safety reasons (high voltage), do not replace the
Bi-Xenon bulb yourself. See your authorized Mer-
cedes-Benz Center.5
High beam
H7 (55 W)
Parking and stand-
ing lamps
W 5 W
6
Fog lamp
HB4/9006
(55 W)
Page 333 of 399

333 Practical hints
Replacing bulbs
Rear lamps 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.
Y o u r h a n d s s h o u l d b e d r y a n d f r e e o f o i l
and grease.
If the newly installed bulb does not light
up, visit an authorized Mercedes-Benz
Center.
Have the LEDs and bulbs for the follow-
ing lamps replaced by an authorized
Mercedes-Benz Center:
Additional turn signal lamps in the
exterior rear view mirrors
High mounted brake lamp
Bi-Xenon lamps
Front fog lamps
Lamp
Type
7
High mounted brake
lamp
LED
8
Tail, parking and
standing lamp
HiP
9
License plate lamps
C 5 W
Warning!
G
Keep bulbs out of reach of children.
Bulbs and bulb sockets can be very hot. Al-
low the lamp to cool down before changing
a bulb.
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.
Because of high voltage in Bi-Xenon lamps,
it is dangerous to replace the bulb or repair
the lamp and its components. We recom-
mend that you have such work done by a
qualified technician.
Page 334 of 399

334 Practical hintsReplacing bulbsReplacing bulbs for front lamps
1Bulb socket for turn signal lamp
2High beam bulb
3Bulb socket for parking and standing
lamp
High beam bulb (Halogen headlamps
only)
Switch off the lights.
Open the hood (
page 261).
Press the clamp and remove headlamp
cover.
Pull electrical connector off.
Turn the locking mechanism counter-
clockwise and take out the high beam
bulb2.
Insert the new high beam bulb so that
the base is in the recess of the holder.
Turn the locking mechanism clockwise.
Plug the connector onto the high beam
bulb.
Align headlamp cover and click into
place.
High beam bulb (Bi-Xenon* headlamps
only)
Switch off the lights.
Open the hood (
page 261).
Press the clamp and remove headlamp
cover.
Pull electrical connector off.
Turn the locking mechanism counter-
clockwise and take out the high beam
bulb2.
Insert the new high beam bulb so that
the base is in the recess of the holder.
Turn the locking mechanism clockwise.
Plug the connector onto the high beam
bulb.
Align headlamp cover and click into
place.
Warning!
G
Because of high voltage in Bi-Xenon lamps,
it is dangerous to replace the bulb or repair
the lamp and its components. We recom-
mend that you have such work done by a
qualified technician.
Page 335 of 399
335 Practical hints
Replacing bulbs
Front turn signal lamp bulb
Switch off the lights.
Open the hood (
page 261).
Twist bulb socket1 counterclockwise
and pull out.
Push bulb into socket, turn counter-
clockwise and remove.
Insert new bulb in socket, push in and
twist clockwise.
Reinsert bulb socket in lamp and twist
clockwise.Parking and standing lamp bulb
Switch off the lights.
Open the hood (
page 261).
Press the clamp and remove headlamp
cover.
Pull out the bulb socket3 with the
bulb.
Pull the bulb out of the bulb socket.
Insert a new bulb in the socket.
Reinstall the bulb socket.
Align headlamp cover and click into
place.Side marker lamp bulb
Switch off the lights.
Carefully slide lamp towards front.
Remove rear end first.
Twist bulb socket counterclockwise
and pull out.
Pull bulb out of the bulb socket.
Insert new bulb in socket.
Reinstall bulb socket, push in and twist
clockwise.
To reinstall lamp, set rear end in
bumper and let front end snap into
place.
Page 336 of 399
336 Practical hintsReplacing bulbsReplacing bulbs for rear lamps
Tail lamp assemblies
The tail lamps are equipped with HiP bulbs.License plate lamp
1Screw
Switch off the lights.
Loosen both screws1 and remove
lamp.
Replace the tubular lamp and reinstall
lamp.
Retighten the screws.
!To prevent scratches, we recommend
that you have the sidemarker bulb re-
placed by an authorized Mer-
cedes-Benz Center.Warning!
G
The bulbs in the tail lamps cannot be re-
placed individually. The tail lamp bulbs are
under pressure and could explode during an
attempt to replace them.
If the tail lamps are malfunctioning, have
them exchanged at an authorized Mer-
cedes-Benz Center.