2005 MERCEDES-BENZ E320CDI Owner's Manual

415 Practical hints
Replacing SmartKey batteries
Replacing SmartKey batteries
If the batteries in the SmartKey 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
Replacement batteries: Lithium, type
CR 2025 or equivalent.
Remove the mechanical key1
(page 410).
1Mechanical key
2Battery compartment

Insert the mechanical key1 in side
opening and push gray slide.
Battery compartment2 is unlatched.

Pull battery compartment2 out of the
housing in direction of arrow.

Remove the batteries.
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 replacing batteries, always re-
place both batteries.
The required replacement batteries are
available at any Mercedes-Benz Cen-
ter.

416 Practical hintsReplacing SmartKey batteries3Battery
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*
Replacement batteries: Lithium, type
CR 2025 or equivalent.
Remove mechanical key (
page 410).
1Battery
2Tilt battery up
3Mechanical key

Insert the mechanical key3 in side
opening and push grey slide.
Battery compartment is unlatched.

Pull battery compartment out of the
housing in direction of arrow.

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.

417 Practical hints
Replacing bulbs
Replacing bulbs
Bulbs
Safe vehicle operation depends on proper
exterior lighting and signaling. It is there-
fore essential that all bulbs and lamp as-
semblies 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 your autho-
rized Mercedes-Benz Center for headlamp
adjustment.
iIf the headlamps or front fog lamps are
fogged up on the inside as a result of
high humidity, driving the vehicle a dis-
tance with the lights on should clear up
the fogging.
iSubstitute bulbs will be brought into
use when lamps malfunction. Observe
the messages in the multifunction dis-
play (
page 392).

418 Practical hintsReplacing bulbs
Front lamps Rear lamps
Lamp
Type
1
Additional turn signal
lamps
LED
2
Turn signal lamp
1156 NA
3
Side marker lamp
W 5 W
4
Halogen headlamps:
Low beam
Bi-Xenon* headlamps:
Low and high beam
1
1Vehicles with Bi-Xenon* headlamps: Low beam
and high beam use the same D2S-35W lamp. Do
not replace the Bi-Xenon bulbs yourself. See your
authorized Mercedes-Benz Center.
H7 (55 W)
D2S-35 W
5
Halogen headlamps:
High beam/high beam
flasher
Bi-Xenon* headlamps:
High beam flasher
H7 (55 W)
H7 (55 W)
Parking and standing
lamps
W 5 W
6
Front fog lamp
HB4 (51 W)
Lamp
Type
7
High mounted brake
lamp
LED
8
Brake, tail, parking,
standing, backup lamps
and turn signal lamps.
Rear fog lamp (only
driver’s side)
HiP
LED*
9
License plate lamps
C5W

419 Practical hints
Replacing bulbs
Notes on bulb replacement

Use only 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 light
up, visit an authorized Mercedes-Benz
Center.Have the LEDs and bulbs for the following
lamps replaced by an authorized
Mercedes-Benz Center:


Additional turn signals in the exterior
rear view mirrors


High mounted brake lamp


Xenon* lamps


Front fog lamps


Rear lamps (except license plate
lamps)
Warning!
G
Bulbs and bulb sockets can be very hot. Al-
low the lamp to cool down before changing
a bulb.
Keep bulbs out of reach of children.
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.

420 Practical hintsReplacing bulbsReplacing bulbs for front lamps
1Bulb socket for high beam head-
lamp/high beam flasher bulb
2Bulb socket for parking and standing
lamp bulb
3Housing cover for low
beam/Bi-Xenon* headlamp4Bulb socket for turn signal lamp bulb
5Electrical connector for high beam
headlamp/high beam flasher bulb
6Bulb socket for parking and standing
lamp bulb
7Electrical connector for low beam
headlamp bulb (halogen headlamps
only)
Before you start to replace a bulb for a
front lamp, do the following first:

Turn the exterior lamp switch to
positionM (
page 133).

Open the hood (
page 303) (except
for side marker lamps).
Warning!
G
Do not remove the cover3 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.

421 Practical hints
Replacing bulbs
Low beam bulb (halogen headlamps
only)
Turn housing cover3 counterclock-
wise and remove it.

Pull electrical connector7 off.

Unclip the retainer spring on the bulb
socket and take out the bulb.

Insert the new bulb so that its base lo-
cates in the recess on the lower left
and is level to it.

Clip on the retainer spring.

Plug electrical connector7 onto the
bulb.

Align housing cover3 and turn it
clockwise.
High beam bulb/high beam flasher
bulb (halogen headlamps)/high beam
flasher bulb (Bi-Xenon* headlamps)

Turn bulb socket1 with the bulb
counterclockwise and remove it.

Pull electrical connector5 off.

Press gently onto the bulb and turn
counterclockwise out of bulb
socket1.

Press the new bulb gently into bulb
socket1 and turn clockwise until it
engages.

Plug electrical connector5 onto the
bulb.

Place bulb socket1 back into the
lamp and turn it clockwise.
Front turn signal lamp bulb

Turn bulb socket4 with the bulb
counterclockwise and remove it.

Press gently onto the bulb and turn
counterclockwise out of bulb
socket4.

Press the new bulb gently into bulb
socket4 and turn clockwise until it
engages.

Place bulb socket4 back into the
lamp and turn it clockwise.Parking and standing lamp bulb

Pull out bulb socket6 with the bulb.

Press gently onto the bulb and turn
counterclockwise out of bulb
socket6.

Press the new bulb gently into bulb
socket6 and turn clockwise until it
engages.

Press bulb socket6 back into the
lamp.

422 Practical hintsReplacing bulbsSide marker lamp bulb
Carefully slide the lamp towards the
front in direction of arrows.

Remove the rear end first.

Turn the bulb socket with the bulb
counterclockwise and remove it.

Pull the bulb out of the bulb socket.

Insert the new bulb into the bulb sock-
et.

Place the bulb socket back into the
lamp and turn it clockwise.

To reinstall the lamp, set the front end
in the bumper and let the rear end en-
gage.
Replacing bulbs for rear lamps
Tail lamp unit
The tail lamps are equipped with HiP bulbs.License plate lamp
1Screw

Turn the exterior lamp switch to
positionM (
page 133).

Loosen both screws1.

Remove the license plate lamp.

Replace the bulb.

Reinstall the license plate lamp.

Retighten screws1.
Warning!
G
The bulbs in the tail lamps cannot be re-
placed individually. The tail lamp bulbs are
under pressure and could explode during an
attempt to replace them.
If the tail lamps are malfunctioning, have
them exchanged at an authorized
Mercedes-Benz Center.