Page 390 of 481

389 Practical hints
Unlocking/locking in an emergency
Unlocking the trunk
A minimum height clearance of 6 ft.
(1.85 m) is required to open the trunk lid.
The trunk lid lock is located next to the
handle above the rear license plate recess.
1Unlocking and opening
Insert the mechanical key into the
trunk lid lock until it stops.
Turn the mechanical key counterclock-
wise to position1.
The trunk opens.
Turn the mechanical key back and re-
move it from the trunk lid lock.
Locking the vehicle
If you cannot lock the vehicle with the
SmartKey or the SmartKey with
KEYLESS-GO*, do the following:
Close the front passenger door, the
rear doors and the trunk lid.
Press the central locking switch in the
center console (
page 113).
Check to see whether the locking
knobs on the doors have moved down.
If necessary, push them down manual-
ly.
Except for the driver’s door, the vehicle
should now be locked.
1Locking
Remove the mechanical key out of the
SmartKey (
page 388).
Insert the mechanical key into the driv-
er’s door lock until it stops.
Turn the mechanical key clockwise to
position1.
The driver’s door is locked.
!The trunk lid swings open upwards au-
tomatically. Always make sure that
there is sufficient overhead clearance.
Page 392 of 481
391 Practical hints
Opening/closing in an emergency
Opening/closing in an emergency
Tilt/sliding sunroof
You can open or close the tilt/sliding sun-
roof manually should an electrical malfunc-
tion occur.
The tilt/sliding sunroof drive is located be-
hind the lens of the interior overhead light.
1Lens
Pry off lens1 using a flat blade screw-
driver (
page 384).
Switch on the ignition (
page 34).
Take the crank from the operator’s
manual pouch.
2Crank
Insert crank2 through hole.
Turn crank2 clockwise to:
slide sunroof closed
raise roof at the rear
Turn crank2 counterclockwise to:
slide sunroof open
lower roof at the rear
iTurn crank2 slowly and smoothly.
The tilt/sliding sunroof must be syn-
chronized after being operated manual-
ly (
page 214).
Page 399 of 481

398 Practical hintsReplacing bulbsHalogen headlamp
Press the tab on cover3 and remove
cover.
Pull connector7 off of the lamp.
Release the retaining springs and take
out the bulb.
Insert the new bulb in the socket so
that the base is in the recess on the
lower left.
Attach the retaining springs.
Insert connector7 into the bulb.
Press cover3 onto the housing until
the tab engages.Replacing halogen high beam bulbs
Press the tab on cover2 and remove
cover.
Pull connector 6 off of the bulb.
Apply pressure on the bulb contacts
from above until the bulb releases from
the retaining springs.
Remove bulb.
Insert the new bulb in the socket with
the marking facing upward.
Press the bulb upward on the contacts
until it engages in the retaining springs.
Insert connector6 onto the bulb.
Press cover2 onto the housing until
the tab engages.Front turn signal lamp bulb
Turn bulb socket8 counterclockwise
and pull out.
Gently push bulb into socket, turn
counterclockwise and remove.
Insert new bulb in socket, push in and
twist clockwise.
Reinstall bulb socket in lamp and twist
clockwise until it engages.
Page 400 of 481
399 Practical hints
Replacing bulbs
Parking and standing lamp bulb
Press the tab on cover2 and remove
cover.
Pull out the bulb socket5 with the
bulb.
Pull the bulb out of the bulb socket5.
Insert a new bulb in the bulb socket5.
Reinstall the bulb socket5.
Press cover2 onto the housing until
the tab engages.Side marker lamp bulb
Carefully slide lamp towards rear.
Remove front 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.
Replacing bulbs for rear lamps
Before you start to replace a bulb for a rear
lamp, do the following first:
Turn the exterior lamp switch to M
(page 50).
Open the trunk (
page 103).
Page 401 of 481
400 Practical hintsReplacing bulbsTail lamp unitPassenger side1Black socket:
Backup lamp
2Red socket:
Driver’s side: Tail, parking and rear fog
lamp
Passenger side: Tail and parking lamp
3Red socket:
Tail, standing and parking lamp
4White socket:
Turn signal lamp
Driver’s side: Turn the locking knob and
move the trim to the side.
Passenger side: Fold the trim to the
side.
Turn bulb socket counterclockwise and
pull out.
Gently twist bulb counterclockwise and
pull out of bulb holder.
Insert new bulb into the holder and turn
it clockwise.
Reinstall bulb socket.
The bulb socket should audibly click.
Driver’s side: Replace the trim and se-
cure with lock.
Passenger side: Reinstall the trim. License plate lamp
1Screws
Loosen both screws1.
Remove the license plate lamp.
Replace the bulb.
Reinstall the license plate lamp.
Retighten screws1.
Page 407 of 481

406 Practical hintsFlat tire
Keeping jack in this position, turn
crank3 clockwise until the jack base
meets the ground. Make sure the jack
is vertical (plumb line).
Continue to turn the crank until the tire
is a maximum of 1.2 in (3 cm) from the
ground.Removing the wheel
1Alignment bolt
Unscrew upper-most wheel bolt and re-
move.
Replace this wheel bolt with alignment
bolt1 supplied in the tool kit.
Remove the remaining bolts.
Remove the wheel.Mounting the new wheel
Clean contact surfaces of wheel and
wheel hub.
Warning!
G
The jack is intended only for lifting the vehi-
cle briefly for wheel changes. It is not suited
for performing maintenance work under the
vehicle.
Never start the engine when the vehicle
is raised.
Never lie down under the raised vehicle.
!Do not place wheel bolts in sand or dirt.
This could result in damage to the bolt
and wheel hub threads.
!To avoid paint damage, place wheel flat
against hub and hold it there while in-
stalling first wheel bolt.Warning!
G
Always replace wheel bolts that are dam-
aged or rusted.
Never apply oil or grease to wheel bolts.
Damaged wheel hub threads should be re-
paired immediately. Do not continue to drive
under these circumstances! Contact an au-
thorized Mercedes-Benz Center or call
Roadside Assistance.
Incorrect wheel bolts or improperly tight-
ened wheel bolts can cause the wheel to
come off. This could cause an accident.
Make sure you are using the correct wheel
bolts.
Page 408 of 481

407 Practical hints
Flat tire
Guide the spare wheel onto the align-
ment bolt and push it on.
Insert wheel bolts and tighten them
slightly.
Unscrew the alignment bolt, install last
wheel bolt and tighten slightly.
Lowering the vehicle
Lower vehicle by turning crank coun-
terclockwise until vehicle is resting ful-
ly on its own weight.
Remove the jack.1 - 5 Wheel bolts
Tighten the five wheel bolts evenly, fol-
lowing the diagonal sequence illustrat-
ed (1 to 5), until all bolts are tight.
Observe a tightening torque of
110 lb-ft (150 Nm).
Before storing the jack in the trunk, it
should be fully collapsed, with handle
folded in.
Place the wheel bolt wrench, alignment
bolt and jack back in the vehicle tool kit
in the trunk and close the covering lid.
Replacing jack support tube cover
Slide tongue of cover under the upper
edge of the tube opening.
Applying even pressure, press cover
until it snaps into place. Be careful not
to damage the locking tabs or clamp
the plastic retaining strap.
Warning!
G
Use only genuine equipment
Mercedes-Benz wheel bolts. Other wheel
bolts may come loose.
Do not tighten the wheel bolts when the ve-
hicle is raised. Otherwise the vehicle could
fall off the jack.
Warning!
G
Have the tightening torque checked after
changing a wheel. The wheels could come
loose if they are not tightened to a torque of
110 lb-ft (150 Nm).
!You can also store and secure the dam-
aged wheel in the spare wheel well in
the trunk.
Do not activate the tire inflation pres-
sure monitor* until the depressurized
tire is no longer in the vehicle.
Page 411 of 481
410 Practical hintsBatteryReconnecting the battery
Turn off all electrical consumers.
Connect the positive lead and fasten its
cover2.
Connect negative lead3.Batteries contain materials that can harm
the environment if disposed of improperly.
Large 12-volt storage batteries contain
lead. Recycling of batteries is the preferred
method of disposal. Many states require
sellers of batteries to accept old batteries
for recycling.!Never invert the terminal connections.!The battery, its filler caps and the vent
tube must always be securely installed
when the vehicle is in operation.
iThe following procedures must be car-
ried out following any interruption of
battery power (e.g. due to reconnect-
ing):
Set the clock (see COMAND opera-
tor’s manual).
Synchronize the ESP
®
(
page 356).
Synchronize side windows
(page 210).
Synchronize tilt/sliding sunroof
(page 214).