Page 433 of 514
432 Practical hintsOpening/closing in an emergencyeMaterial tensioning frame
fSoft top compartment cover
Lift material tensioning framee into a
vertical position.
Lower soft top compartment coverf.gSoft top base
With the palm of your hand, press the
window in material tensioning
framee until it is positioned on the
soft top compartment coverf.
You and your assistant should press
soft top compartment cover f for-
ward and down with the palms of your
hands until it snaps into place in the
guide. Place your hands on the areas
indicated by the arrows.
At the same time, gently press material
tensioning framee down with the
palms of your hands.
!Make sure the soft top compartment
coverf does not collide or make con-
tact with the material tensioning
framee.
Page 434 of 514

433 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 435 of 514

434 Practical hintsResetting activated head restraintsResetting activated head restraints
If the active head restraints have been trig-
gered in a rear-end collision, the active
head restraints must be reset. Otherwise,
the active head restraints cannot offer any
additional protection in the event of anoth-
er rear-end collision.
1Head restraint cushion
2Head restraint cover
3Reset tool
4Hole
Take the reset tool3 out of the
Mercedes-Benz vehicle literature
pouch.
Guide reset tool3 into the hole4 be-
tween the rear head restraint cover2
and the head restraint cushion1.
Press the reset tool3 downward until
you hear the active head restraint re-
lease mechanism audibly engage.
Pull out reset tool3.
Firmly press the head restraint
cushion1 back toward the rear head
restraint cover2 until it engages.
Repeat this procedure on the active
head restraint for the second seat.
For information on active head restraints,
see “Active head restraints” (
page 73).
For information on head restraint adjust-
ment, see “Seats” (
page 37).
iFor your convenience, we recommend
that you have this work carried out by
an authorized Mercedes-Benz Center.
You will find the reset tool for manually
operating the active head restraints in
the Mercedes-Benz vehicle literature
pouch.
!Be careful not to damage upholstery.
Warning!
G
When pushing back the head restraint cush-
ion, take care that your fingers do not be-
come caught between the head restraint
cushion and the cover. Failing to do so may
lead to injury.
Page 436 of 514
435 Practical hints
Replacing SmartKey batteries
Replacing SmartKey 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
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.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
replace both batteries.
The required replacement batteries are
available at any Mercedes-Benz
Center.
Page 437 of 514
436 Practical hintsReplacing SmartKey batteriesSmartKey
Replacement batteries: Lithium, type
CR 2025 or equivalent.
Remove the mechanical key
(page 419).
1Mechanical key
2Slide
3Battery compartment
Insert the mechanical key 1 in direc-
tion of arrow in side opening.
Using mechanical key1, push gray
slide2 to unlatch battery
compartment3.
Pull battery compartment3 out of the
housing in the direction of arrow.
3Battery
4Contact spring
Remove the batteries4 in direction of
arrow.
Using a lint-free cloth, insert new
batteries 4 under the contact
spring5 with the positive terminal (+)
side facing up.
Return battery compartment 3 into
housing until it locks into place.
Slide mechanical key 1 back into the
SmartKey.
Check the operation of the SmartKey.
Page 438 of 514
437 Practical hints
Replacing SmartKey batteries
SmartKey with KEYLESS-GO*
Replacement batteries: Lithium, type
CR 2025 or equivalent.
Remove the mechanical key
(page 419).
Insert the mechanical key in side open-
ing and push grey slide (
page 436).
The battery compartment is unlatched.
Pull the battery compartment out of the
housing (
page 436).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 under the contact spring
with the positive terminal (+) side
facing up.
Return battery compartment into hous-
ing until it locks into place.
Slide mechanical key 3 back into the
SmartKey.
Check the operation of the SmartKey
and the KEYLESS-GO*.
Page 439 of 514

438 Practical hintsReplacing bulbsSafe vehicle operation depends on proper
exterior lighting and signaling. It is there-
fore essential that all bulbs and lamp
assemblies 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 an authorized
Mercedes-Benz Center for headlamp
adjustment.
Bulbs Front lamps
iIf the headlamps or front fog lamps are
fogged up on the inside as a result of
high humidity, driving the vehicle a
distance with the lights on should clear
up the fogging.iBack-up bulbs will be brought into use
when lamps malfunction. Observe the
messages in the multifunction display
(page 404).
Lamp
Type
1
Additional turn signal
lamp
LED
2
Turn signal lamp
1156 NA
3
Halogen headlamp:
Low beam
Bi-Xenon* headlamp:
Low and high beam
1
1Vehicles with Bi-Xenon headlamps* do not replace
the Bi-Xenon bulbs yourself.
H7 (55 W)
D2S-35 W
4
Halogen headlamp:
High beam/high beam
flasher
Bi-Xenon* headlamp:
High beam flasher
H7 (55 W)
H7 (55 W)
Parking and standing
lamp
W 5 W
5
Front fog lamp
Corner-illuminating
front fog lamp*
HB4 (51 W)
H7 (55 W)
6
Side marker lamp
W 5 W
Page 440 of 514

439 Practical hints
Replacing bulbs
Rear lamps Notes on bulb replacement
Only use 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.
Your hands should be dry and free of oil
and grease.
If the newly installed bulb does not
come on, visit an authorized
Mercedes-Benz Center.
Have the LEDs and bulbs for the following
lamps replaced by an authorized
Mercedes-Benz Center.
Additional turn signal lamps in the exte-
rior rear view mirrors
High mounted brake lamp
Bi-Xenon* lamps
Front fog lamps
Front side marker lamps
Lamp
Type
7
High mounted brake
lamp
LED
8
Brake lamp
P 21 W
9
Turn signal lamp
P 21 W
a
Tail, parking and stand-
ing lamp, side marker
P 21/4 W
W 5 W
b
Backup lamp
P 21 W
c
License plate lamps
C 5 W
d
Rear fog lamp, driver’s
side
P 21/4 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 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.iHave the headlamp adjustment
checked regularly.