Page 400 of 506
399 Practical hints
Unlocking/locking in an emergency
1Locking
Insert the mechanical key into the
driver’s door lock until it stops.
Turn the mechanical key clockwise to
position1.
The driver’s door is locked.
Fuel filler flap
In case the central locking system does
not release the fuel filler flap, you can open
it manually.
The release button is on the right-hand
side of the luggage compartment behind
the side trim.
Open trunk lid.
Remove the side trim from the
right-hand side of the luggage compart-
ment.
Reach inside through opening2 in di-
rection of arrow.
Turn release knob 1 clockwise (arrow)
as far as will go.
The fuel filler flap is released and can
be opened from outside.
Open the fuel filler flap from outside.
Warning!
G
If you operate the emergency release but-
ton, be careful of the sharp edges so that
you do not injure yourself.
Page 405 of 506
404 Practical hintsOpening/closing in an emergency
Engage parking brake.
Lower the side windows.
Lower rear head restraints
(page 115).
For safety reasons, remove SmartKey
from starter switch.
Open the trunk.
Remove the trunk floor cover.
Take the two straps for soft top emer-
gency operation out of vehicle tool kit
(page 391).
Take hex wrench out of its storage
location in the storage well casing.
Open the left side trim panel in the
trunk.1Locking mechanism
Pull locking mechanism1 out until it
stops and rotate it approx. one-quarter
of a turn.
Make sure the locking mechanism
does not retract again. If this happens,
pull the locking mechanism out again
and rotate it approx. one-quarter of a
turn.
iIf the rear head restraints cannot be
lowered using the rear head restraint
lowering switch, the roll bars may have
been released. For more information,
see “Operating roll bars manually”
(page 401).
Page 408 of 506

407 Practical hints
Opening/closing in an emergency
Place both straps on soft top compart-
ment cover.
Take hex wrench out of trunk.
Close trunk lid.
You will only have access to the trunk
again when the emergency operation
has been completed.
You and your assistant should each
take one of the straps by the handle.
With a strong, simultaneous tug on the
loops, pull soft top compartment cover
upward and out to the rear.
iDo not place the SmartKey in the open
trunk. You may lock yourself out.
Vehicles with KEYLESS-GO*: To pre-
vent a possible inadvertent lockout, the
trunk lid will open automatically if a
SmartKey with KEYLESS-GO* is recog-
nized in the area of the rear shelf or in-
side the trunk.!The trunk lid must remain closed during
the next steps in the procedure. Other-
wise the trunk lid and the soft top com-
partment cover may come into contact
with one another and be damaged.Warning!
G
At this point, the remaining procedure
needs to be done by two people. Otherwise
you could be injured.
Page 412 of 506

411 Practical hints
Opening/closing in an emergency
hLocking
Insert hex wrench into soft top locking
mechanism screw.
Turn the soft top locking mechanism
screw with hex wrench counterclock-
wise in direction of arrowh as far as it
will go.
The soft top is locked onto the wind-
shield frame.
Have the soft top operation checked at
an authorized Mercedes-Benz Center
as soon as possible.
Warning!
G
Position hands as indicated by arrows so
that when you press soft top compartment
coverf forward and lower material ten-
sioning framee, your hands cannot be-
come trapped.
!Make sure you turn the hex wrench
counterclockwise as far as it will go.
Otherwise the soft top may not lock
properly.!If, after completing the soft top emer-
gency operation, the trunk cannot be
opened using the remote trunk lid re-
lease switch in the driver’s door,
theŠ button on the SmartKey, or
the trunk lid release handle in the li-
cense plate recess, press the soft top
compartment cover down again as de-
scribed above.
Do not open the trunk with the emer-
gency key, as this could otherwise
damage the trunk lid and the soft top
compartment cover.
Page 413 of 506

412 Practical hintsReplacing 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
authorized 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
Replacement batteries: Lithium, type
CR 2025 or equivalent.
Remove mechanical key1
(page 397).
1Mechanical key
2Battery compartment
Insert mechanical key 1 in side
opening and push gray slide.
Battery compartment2 is unlatched.
Pull battery compartment 2 out of the
SmartKey housing in direction of
arrow.
Warning!
G
Keep the batteries out of reach of children.
If a battery is swallowed, seek medical help
immediately.
iWhen inserting the batteries, make
sure they are clean and free of lint.iWhen changing batteries, always re-
place both batteries.
The required replacement batteries are
available at any Mercedes-Benz
Center.
Page 414 of 506

413 Practical hints
Replacing batteries in the SmartKey/ SmartKey with KEYLESS-GO*
Remove the batteries.
3Battery
4Contact spring
Using a lint-free cloth, insert new
batteries 3 under the contact
spring4 with the plus (+) side facing
up.
Return battery compartment 2 into
housing until it locks into place.
Slide mechanical key 1 back into the
SmartKey.
Check the operation of the SmartKey.
SmartKey with KEYLESS-GO*
Replacement batteries: Lithium, type
CR 2025 or equivalent.
Remove mechanical key (
page 397).
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.
1Battery
2Tilt battery up
3Mechanical key
Using mechanical key3, apply
pressure to position2.
Battery1 tilts up slightly.
Pull batteries1 out in direction of
arrow.
Using a lint-free cloth, insert new
batteries1 with the plus (+) side
facing up.
Return battery compartment into hous-
ing until it locks into place.
Slide mechanical key 1 back into the
SmartKey.
Check the operation of the SmartKey
and the KEYLESS-GO*.
Page 422 of 506

421 Practical hints
Replacing wiper blades
Replacing wiper blades
Removing wiper blades
Remove SmartKey from starter switch
(vehicles with KEYLESS-GO*: make
sure the vehicle's on board electronics
have status 0).
Fold the wiper arm forward.1Unlock
2Lock
Pull the tab in direction of arrow1 and
remove windshield wiper.
Installing wiper blades
Slide the wiper blade into the cutout on
the wiper arm (see arrows).
Slide the tab back in the direction of
arrow2 until it audibly engages.
Fold the wiper arm backward to rest on
the windshield. Make sure you hold on
to the wiper when folding the wiper arm
back.
Warning!
G
For safety reasons, switch off wipers and
remove SmartKey from starter switch
(vehicles with KEYLESS-GO*: make sure the
vehicle's on-board electronics have
status
0) before replacing a wiper blade.
Otherwise, the wiper motor could suddenly
turn on and cause injury.
!Never open the hood when the wiper
arms are folded forward.
Hold on to the wiper when folding the
wiper arm back. If released, the force
of the impact from the tensioning
spring could crack the windshield.
Do not allow the wiper arms to contact
the windshield glass without a wiper
blade inserted.
Make certain that the wiper blades are
properly installed. Improperly installed
wiper blades may cause windshield
damage.
For your convenience, we recommend
that you have this work carried out by
an authorized Mercedes-Benz Center.
Page 423 of 506

422 Practical hintsFlat tire
Preparing the vehicle
Park the vehicle as far as possible from
moving traffic on a hard surface.
Turn on the hazard warning flashers
(page 127).
Turn the steering wheel so that the
front wheels are in a straight ahead
position.
Set the parking brake (
page 55).
Move the gear selector lever toP.
Vehicles with SmartKey:
Turn off the engine (
page 56).
Remove the SmartKey from the starter
switch.Vehicles with SmartKey with
KEYLESS-GO*:
Turn off the engine by pressing the
KEYLESS-GO* start/stop button on the
gear selector lever once (
page 57).
Open the driver’s door (this puts the ig-
nition in position0, same as with the
SmartKey removed from the starter
switch). The driver’s door then can be
closed again.
Have any passenger exit the vehicle at
a safe distance from the roadway.
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. Adapt your driving style
accordingly.
The spare wheel is for temporary use only.
When driving with spare wheel 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 Center
as soon as possible to have the spare wheel
replaced with a regular road wheel.
Never operate the vehicle with more than
one spare wheel mounted.
iOpen door only when conditions are
safe to do so.