CLK Coupé - Interactive Owner's Manual [In depth | Practical advice

Notes on changing bulbs

Bulbs and lamps are an important aspect of vehicle safety. You must therefore make sure that all bulbs function correctly at all times.

Risk of injury

Bulbs and lamps can be very hot. You should therefore allow them to cool down before you change them. Otherwise, you could be burned if you touch them.

Keep bulbs out of the reach of children. Otherwise, they could damage them, for example, and injure themselves.

Never use a bulb which has been dropped. Such a bulb may explode and injure you.

H7 bulbs are pressurised and could explode when you change them, particularly if they are very hot. You should therefore wear eye protection and gloves when you are changing them.

Risk of injury

Xenon bulbs are under high voltage. You could get an electric shock and be seriously or even fatally injured if you touch the electric contacts on xenon bulbs. Do not, therefore, remove the cover on xenon bulbs.

Do not change xenon bulbs yourself, but have them replaced at a qualified specialist workshop which has the necessary specialist knowledge and tools to carry out the work required.

Mercedes-Benz recommends that you use a Mercedes-Benz Service Centre for this purpose. In particular, work relevant to safety or on safety-related systems must be carried out at a qualified specialist workshop.


Do not change the LEDs yourself. You could otherwise damage the LEDs or parts of the vehicle.

Overview

Front bulbs

	Bulb	Type
	Additional turn signal lamp	LEDs (These bulbs must be replaced at a qualified specialist workshop, e.g. a Mercedes-Benz Service Centre.)
	Dipped-beam headlamp/active light function*	H7 55 W (Vehicles with halogen headlamps.) or D1S 35 W* (Vehicles with xenon headlamps* and active light system: always have these bulbs changed at a qualified specialist workshop, e.g. a Mercedes-Benz Service Centre.) or D1S 35 W (Vehicles with xenon headlamps*: always have these bulbs changed at a qualified specialist workshop, e.g. a Mercedes-Benz Service Centre.)
	Turn signal lamp	PY 21 W
	Main-beam headlamp	H7 55 W
	Parking lamp	W 5 W
	Front foglamp/cornering light*	H11 55 W

Rear bulbs

	Bulb	Type
	Third brake lamp	LED
	Rear foglamp/tail lamp	P 21/4 W
	Side lamp/parking lamp	P 21/5 W
	Reversing lamp	P 21 W
	Brake lamp	P 21 W
	Turn signal lamp	PY 21 W
	Licence plate lamp	C 5 W

Before changing bulbs

You can replace the following bulbs:

Dipped-beam headlamps (vehicles with halogen headlamps)
Main-beam headlamps (vehicles with halogen headlamps)
Side lamp and parking lamp
Turn signal lamp (front)
Brake lamp
Reversing lamp
Rear foglamp/tail lamp
Side lamp
Turn signal (rear)
Licence plate lamp

Observe the following points:

Use only the bulb types specified here.
To prevent a short-circuit, switch off the lights before changing a bulb.
Only hold bulbs with a clean, lint-free cloth.
Do not work with wet or greasy fingers.
If the new bulb still does not light up, consult a qualified specialist workshop, e.g. a Mercedes-Benz Service Centre.


Have the headlamp setting checked regularly at a qualified specialist workshop, e.g. a Mercedes-Benz Service Centre.

Changing the front bulbs

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Housing cover for dipped-beam headlamp (halogen/xenon headlamp)

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Housing cover for main-beam headlamp/side lamp/parking lamp

Halogen or xenon* headlamps

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Bulb holder for turn signal

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Bulb holder for dipped-beam headlamp

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Bulb holder for main-beam headlamp

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Bulb holder for side/parking lamp

Replacing dipped-beam headlamps (vehicles with halogen headlamps)

	Switch off the lights.
	Open the bonnet.
	Turn housing cover anti-clockwise and remove it.
	Turn bulb holder anti-clockwise and remove it.
	Pull the bulb out of bulb holder .
	Insert the new bulb into bulb holder .
	Insert bulb holder into the lamp and turn it clockwise.
	Align housing cover and turn it clockwise.

Replacing the bulb in the main-beam (vehicles with halogen headlamps)

	Switch off the lights.
	Open the bonnet.
	Turn housing cover anti-clockwise and remove it.
	Turn bulb holder anti-clockwise and remove it.
	Pull the bulb out of bulb holder .
	Insert the new bulb into bulb holder .
	Insert bulb holder into the lamp and turn it clockwise.
	Align housing cover and turn it clockwise.

Changing the bulbs in the side lamps and parking lamps

	Switch off the lights.
	Open the bonnet.
	Turn housing cover anti-clockwise and remove it.
	Pull out bulb holder with the bulb.
	Pull the bulb out of bulb holder .
	Insert the new bulb into bulb holder .
	Insert bulb holder into the lamp.
	Align housing cover and turn it clockwise.

Replacing the bulbs in the turn signal lamps

	Switch off the lights.
	Open the bonnet.
	Turn bulb holder anti-clockwise and remove it together with the bulb.
	Turn the bulb anti-clockwise, applying slight pressure, and remove it from the bulb holder.
	Insert the new bulb into the bulb holder and turn it clockwise.
	Insert bulb holder into the headlamp and turn it clockwise until it engages.

Changing the rear bulbs

Opening and closing the side trim panels

You must open the corresponding side trim panel in the boot to change the bulbs.

Side trim panel

Left-hand side trim panel

Side trim panel

Right-hand side trim panel

To open: move resources/font_symbols/mbsymb5/mbsymb5_0031.png in the direction of the arrow, swing to one side and remove side panel.

To close: resources/font_symbols/mbsymb5/mbsymb5_0031.png insert side trim panel and turn in the opposite direction to the arrow.

Changing the tail lamps

	Switch off the lights.
	Open the boot.
	Open the side trim panel more.

Retaining lug

Bulb holder

Press retaining lugs resources/font_symbols/mbsymb5/mbsymb5_0031.png simultaneously in the direction of the arrows and remove the bulb holder.

Brake lamp

Reversing lamp

Rear foglamp/tail lamp

Side lamp

Turn signal lamp

Bulb holder

	Lightly press the corresponding bulb into the bulb holder, turn it anti-clockwise and remove it from the bulb holder.
	Insert the new bulb into the bulb holder and turn it clockwise.
	Attach the bulb holder and press firmly.
	The lugs on the bulb holder engage audibly.
	Close the side trim panel more.

Changing the bulbs in the licence plate lamps

Screws

Licence plate lamp

	Switch off the lights.
	Open the boot lid.
	Remove screws .
	Remove the licence plate lamp.
	Replace the bulb.
	Insert the licence plate lamp.
	Replace and tighten screws .