Page 308 of 394

308 Practical hintsWhere will I find...?Storing the Minispare wheel
Place Minispare wheel3 in wheel well.
Place vehicle tool kit storage well
casing4 over the Minispare wheel. Be
sure that the arrow 2 on storage well
casing4 points in the direction of trav-
el.
Place storage well casing
(page 305) over the vehicle tool kit
storage well casing 4 and turn the re-
taining screw (
page 305) clockwise
as far as it will go to secure the
Minispare wheel.
iThe arrow 2 on vehicle tool kit storage
well casing4 must point in the direc-
tion of travel, otherwise you cannot
place the storage well casing
(page 305) on top and secure the
Minispare wheel with the retaining
screw (
page 305).
!To prevent damage, always disengage
trunk floor handle from upper edge of
trunk and lower trunk floor before clos-
ing the trunk lid.
Warning!
G
The dimensions of the Minispare wheel are
different from those of the road wheels. As
a result, the vehicle handling characteristics
change when driving with a Minispare wheel
mounted.
The Minispare wheel should only be used
temporarily, and should be replaced with a
regular road wheel as quickly as possible.
Page 310 of 394
310 Practical hintsUnlocking/locking in an emergency
Unlocking/locking in an emergencyUnlocking the vehicle
Unlocking the driver’s door
If you are unable to unlock the driver’s
door using the SmartKey, open the door
using the mechanical key.
1Mechanical key locking tab
2Mechanical key
Move locking tab1 in direction of ar-
row and slide the mechanical key out of
the housing.3Unlocking
4Locking
Unlock the door with the mechanical
key. To do so, push the mechanical key
in the lock until it stops and turn it to
the left.
iUnlocking your vehicle with the me-
chanical key will trigger the anti-theft
alarm system. To cancel the alarm, do
one of the following:
Press button
Œ
or
‹
on the
SmartKey.
Insert the key in the starter switch.
Press the KEYLESS-GO* start/stop
button (
page 33).
Page 311 of 394

311 Practical hints
Unlocking/locking in an emergency
Unlocking the trunk
If you are unable to unlock the trunk with
the SmartKey, open the trunk with the me-
chanical key as follows:Trunk lid lock1Locking
2Unlocking
Insert the mechanical key into the
trunk lid lock.
Perform the following two steps simul-
taneously:
Turn the key counterclockwise to
position2.
Pull the trunk lid handle and lift 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 96).
Check to see whether the locking knob
on the passenger door is still visible. If
necessary 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 94).
!When opening the trunk completely, al-
ways make sure that there is sufficient
overhead clearance.iUnlocking your vehicle with the me-
chanical key will trigger the anti-theft
alarm system. To cancel the alarm, do
one of the following:
Press button
Œ
or
‹
on the
SmartKey.
Insert the key in the starter switch.
Press the KEYLESS-GO* start/stop
button (
page 33).
Page 312 of 394

312 Practical hintsUnlocking/locking in an emergencyChanging batteries
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 /
SmartKey with KEYLESS-GO*
1Mechanical key
2Battery compartment
Replacement batteries: Lithium, type
CR 2025 or equivalent.
Remove mechanical key1
(page 310).
Insert the mechanical key in side open-
ing and push gray slide.
The battery compartment is unlatched.
Pull the battery compartment out of the
key housing in direction of arrow.
Remove the batteries.
3Battery
4Contact spring
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 313 of 394

313 Practical hints
Unlocking/locking in an emergency
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
1Release lever
Remove the right side trim panel in the
trunk.
Reach inside in direction of arrow 2.
Turn release knob 1 clockwise as far as
it will go.
The fuel filler flap can be opened.Manually unlocking the transmission
selector lever
In case of power failure, the transmission
selector lever can be manually unlocked,
e.g. to tow the vehicle.
Open the storage compartment in front
of the center armrest.
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 selector lever from
positionP.
Reinstall the division and cover after re-
moving the tool from the opening.iThe selector lever is locked again when
moving it to positionP.
Page 314 of 394
314 Practical hintsOpening/closing in an emergency
Opening/closing in an emergencySliding/pop-up roof
The sliding/pop-up roof drive is located
behind the lens of the interior overhead
light.
You can open or close the sliding/pop-up
roof manually should an electrical malfunc-
tion occur.
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 315 of 394
315 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 315).Synchronizing the sliding/pop-up roof
Take the fuse for the sliding/pop-up
roof out of the main fuse box
(page 337).
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 319 of 394

319 Practical hints
Replacing bulbs
Low beam and high beam bulb
Switch off the lights.
Open the hood (
page 253).
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 253).
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 253).
Turn housing cover2 counterclockwise
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.