Page 344 of 440
344 Practical hintsUnlocking/locking in an emergencyUnlocking the trunk
A minimum height clearance of 5.41 ft
(1.65 m) is required to open the trunk lid.
The lock is located next to the recessed
handle.
1Unlocking in an emergency
2Handle
Insert the mechanical key into the
trunk lid lock.
Turn the mechanical key counterclock-
wise to position1 and hold it in this
position.
Pull the trunk lid handle2 and lift the
trunk lid.
Locking the vehicle
If you are unable to lock the vehicle with
the SmartKey, lock it with the mechanical
key as follows:
Close the passenger door and the trunk
lid.
Press the central locking switch in the
cockpit (
page 106).
Check to see whether the locking knob
on the passenger door is down. If nec-
essary push it down manually.
Lock the driver’s door with the me-
chanical key.
Lock the trunk lid if necessary with the
mechanical key (
page 104).
! Always make sure there is sufficient
overhead clearance.
Page 345 of 440
345 Practical hints
Unlocking/locking in an emergency
Changing batteries in the SmartKey/ SmartKey with KEYLESS-GO*
If the batteries in the SmartKey or the
SmartKey with KEYLESS-GO* are dis-
charged, the vehicle can no longer be
locked or unlocked. It is recommended to
have the batteries replaced at an autho-
rized Mercedes-Benz Center.
Batteries contain materials that can harm
the environment if disposed of improperly.
Recycling of batteries is the preferred
method of disposal. Many states require
sellers of batteries to accept old batteries
for recycling.SmartKey
1Mechanical key
2Battery compartment
Replacement batteries: Lithium, type
CR 2025 or equivalent.
Remove mechanical key1
(page 343).
Insert the mechanical key in side open-
ing and push gray slide.
The battery compartment is unlatched.
Pull the battery compartment out of the
SmartKey housing in direction of ar-
row.
Remove the batteries.
Warning!
G
Keep the batteries out of reach of children.
If a battery is swallowed, seek medical help
immediately.
iWhen changing batteries, always re-
place both batteries.
The required replacement batteries are
available at any Mercedes-Benz
Center.
Page 346 of 440
346 Practical hintsUnlocking/locking in an emergency3Battery
4Contact spring
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.SmartKey with KEYLESS-GO*
1Battery
2Tilt battery up
3Mechanical key
Replacement batteries: Lithium, type
CR 2025 or equivalent.
Remove mechanical key (
page 343).
Insert the mechanical key in side open-
ing and push grey slide.
The battery compartment is unlatched.
Pull the battery compartment out of the
SmartKey housing in direction of ar-
row.
Using mechanical key3 apply pres-
sure to position2.
Battery1 tilts up slightly.
Pull out batteries1 in direction of ar-
row.
Using a lint-free cloth, insert new bat-
teries with the plus (+) side facing up.
Return battery compartment into hous-
ing until it locks into place.
iWhen changing batteries, always re-
place both batteries.
The required replacement batteries are
available at any Mercedes-Benz
Center.
Page 347 of 440
347 Practical hints
Unlocking/locking in an emergency
Fuel filler flap
In case the central locking system does
not release the fuel filler flap, you can open
it manually.
Open trunk lid.
Remove right side trim panel in the
trunk.
Reach inside through opening2 in di-
rection of arrow.
Turn release knob 1 clockwise (ar-
row).
The fuel filler flap can be opened.Manually unlocking the gear selector
lever
In case of power failure, the gear selector
lever can be manually unlocked, e.g. to tow
the vehicle.
Open the storage compartment under
the center armrest (
page 246).
Take out cover 1.
Insert a pin into the opening of
division2 and pry the division out.
Insert a tool3 (e.g. screwdriver) into
the opening.
Perform the following two steps simul-
taneously:
Push pin3 forward in the direction
of the arrow.
Move gear selector lever from
positionP.
Reinstall the division and cover after re-
moving the tool from the opening.iThe gear selector lever is locked again
when moving it to positionP.
Page 348 of 440
348 Practical hintsOpening/closing in an emergency
Opening/closing in an emergencySliding/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 the lens of the interior overhead
light.
Pry off lens1 using a flat blade screw-
driver.
Slide both locking tabs2 in direction
of arrow.
Lower rear of cover and remove.
Remove cover.iDo not disconnect electrical connec-
tors.
Page 349 of 440
349 Practical hints
Opening/closing in an emergency
Obtain crank3.
Insert crank3 through hole.
Turn crank3 clockwise to:
slide roof closed
raise roof at the rear
Turn crank3 counterclockwise to:
slide roof open
lower roof at the rear
The sliding/pop-up must be resynchro-
nized after being operated manually
(
page 349).Synchronizing the sliding/pop-up roof
Take the fuse for the sliding/pop-up
roof out of the main fuse box
(page 372).
Reinsert the fuse.
Switch on the ignition.
Press the switch in the “raise” direction
until the sliding/pop-up roof is fully
raised at the rear.
Hold the switch for approximately one
second.
The sliding/pop-up roof is adjusted.
Page 353 of 440
353 Practical hints
Replacing bulbs
Low beam and high beam bulb
Switch off the lights.
Open the hood (
page 281).
Turn housing cover1 or 2 counter-
clockwise and remove.
Turn bulb holder 4 or 5 with the bulb
counterclockwise and remove.
Press the bulb backwards and turn
counterclockwise out of the bulb hold-
er.
Press the new bulb into the holder and
twist it clockwise.
Place the bulb holder back into the
lamp and turn it clockwise.
Place the corresponding housing cov-
ers back on and turn them clockwise.Front turn signal lamp bulb
Switch off the lights.
Open the hood (
page 281).
Twist bulb socket3 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 281).
Turn housing cover2 counterclock-
wise and remove.
Pull out the bulb socket with the bulb.
Pull the bulb out of the bulb socket.
Insert a new bulb in the socket.
Reinstall the bulb socket.
Align housing cover and click into
place.
Page 354 of 440
354 Practical hintsReplacing bulbsFront lamps Bi-Xenon*-type
1Bulb socket for turn signal lamp
2Housing cover for high beam flasher
lamp
3Housing cover for Bi-Xenon* lamp4High beam flasher bulb
5Parking and standing lampHigh beam bulb for high beam flasher
Switch off the lights.
Open the hood (
page 281).
Turn housing cover2 counterclock-
wise and remove.
Turn bulb holder 4 with the bulb coun-
terclockwise and remove.
Press the bulb backwards and turn
counterclockwise out of the bulb hold-
er.
Press the new bulb into the holder and
twist it clockwise.
Place the bulb holder back into the
lamp and turn it clockwise.
Place the housing cover 2 back on
and turn them clockwise.
Warning!
G
Do not remove the cover
3
for the Bi-Xe-
non* headlamp. Because of high voltage in
xenon lamps, it is dangerous to replace the
bulb or repair the lamp and its components.
We recommend that you have such work
done by a qualified technician.
