Mercedes-Benz C-Class (W205) 2015 - 2021 Owners Manual: Changing bulbs (only for vehicles with halogen headlamps)

Notes on changing bulbs

• Do not use a bulb if it has been dropped or if its glass has been scratched. The bulb may otherwise explode.
• Do not touch the glass bulb with your bare hands.
• Protect bulbs from moisture and do not allow bulbs to come into contact with liquids.

Overview of the bulbs to be changed

Halogen headlamps

1. Turn signal indicator: PWY 24 W bulb
2. High beam: H7 55 W bulb
3. Low beam: H7 55 W bulb

Tail lamps

1. Turn signal indicator: PY 21 W bulb
2. Reversing light: W 16 W bulb

Changing the front bulbs (vehicles with halogen headlamps)

Removing and installing the cover in the front wheel housing

Requirements:

• The lighting system is switched off.
• The appropriate front wheel is turned inwards.

• To remove: using a suitable object, turn two mounts 1 of cover 2 in an counter-clockwise direction as far as they will go.
• Remove the unlocked cover 2 from the wheel arch liner by pulling it upwards.
• To install: insert cover2 at bottom of the wheel arch liner.
• Using a suitable object, turn the two mounts 1 of the cover 2 in clockwise direction as far as they will go.

Replacing bulbs in the halogen headlamp

Requirements

The lighting system is switched off.

Low beam/high beam:

• A H7 55 W light bulb is available.
• The hood is open.

Turn signal lights:

• A PWY 24 W light bulb is available.
• The cover in the front wheel arch has been removed.

1. Low-beam headlamps
2. High beam
3. Turn signals

• Turn the relevant housing cover 1-3 counter- clockwise and remove it.
• Low beam / high beam: turn the socket counter-clockwise and remove it.
• Indicator: turn the socket counter-clockwise, release it and remove it.
• Pull the bulb out of the socket.
• Insert the new bulb into the socket such that the entire base of the bulb is resting on the bottom of the socket.
• Insert the socket and turn it clockwise.
• Press on the housing cover and turn it clockwise.
• Turn signal lights: install the cover in the front wheel arch.

Changing the rear bulbs (vehicles with halogen headlamps)

Opening and closing the side trim panels in the trunk

• To open: release right-hand or left-hand side trim panels 1 at the top and remove.
• To close: re-insert side trim panel 1.

Replacing the tail lamp bulbs

Requirements

The lighting system is switched off.

The side trim panel in the trunk is open.

Turn signal lights:

• A PY 21 W light bulb is available.

Reversing lamp:

• A W 16 W light bulb is available.

• Push the upper and lower catches on the plug together and remove the plug.
• Turn wing screw 1 90º counter-clockwise and remove the bulb holder.

• Indicator: push bulb 2 gently into the bulb mount, turn it counter-clockwise and remove it from the bulb mount.
• Insert the new bulb into the bulb mount and turn it clockwise.
• Reversing lamp: pull bulb 3 out of the bulb mount.
• Insert the new bulb into the bulb mount.
• Insert the bulb mount again.
• Turn wing screw 1 90º clockwise.
• Insert the plug until the catch hooks engage audibly.
• Close the side trim panel.