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Door Panel Light and Switch Replacement
 
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Pelican Technical Article:

Door Panel Light and Switch Replacement

Steve Vernon

Time:

3 hours3 hrs

Tab:

$3 to $210

Talent:

**

Tools:

Trim removal tool, T30 Torx driver, small flathead screwdriver, small pliers

Applicable Models:

Mercedes-Benz C250 (2012-14)
Mercedes-Benz C300 (2008-14)
Mercedes-Benz C350 (2008-14)

Parts Required:

Switches or lights

Hot Tip:

Pry as close to the door clips as possible

Performance Gain:

Working switches and lights

Complementary Modification:

Detail the interior

There are several lights and switches in the door panel, which will vary depending on how your vehicle is optioned. This article will show you how to change the trunk release switch, the central interior door locks and the lower door light. While each of the switches is relatively easy to replace you must remove the door panel to accomplish this.

Our project vehicle came optioned with central interior locks (red arrow), a trunk release (yellow arrow) and door light (green arrow).
Figure 1

Our project vehicle came optioned with central interior locks (red arrow), a trunk release (yellow arrow) and door light (green arrow). You must remove the door panel to access these components.

When removing the door panel begin by placing the window in the lowest position it will go (green arrow).
Figure 2

When removing the door panel begin by placing the window in the lowest position it will go (green arrow). There are two trim pieces you will need to move/remove before removing the panel. One is the window trim piece where it meets the door panel (red arrow), and the other is the triangular speaker cover by the A-pillar (yellow arrow).

There is a fastener under the window trim piece that you will need access to.
Figure 3

There is a fastener under the window trim piece that you will need access to. Use a trim removal tool and separate the trim piece from the weather stripping on the outside of the doorframe (red arrow).

With the trim piece out of the weather strip channel use your trim tool and separate the piece (red arrow) from the doorframe.
Figure 4

With the trim piece out of the weather strip channel use your trim tool and separate the piece (red arrow) from the doorframe. You can now access the fastener (yellow arrow). This fastener has varied over the years from a clip to a T30 Torx screw.

Next remove the triangular cover by prying it out from the area around the mirror.
Figure 5

Next remove the triangular cover by prying it out from the area around the mirror. If yours has been removed before you can probably do this with your hands. If not use your trim removal tool (red arrow).

With the section around the mirror loose push the piece forward (red arrow) and out from the door.
Figure 6

With the section around the mirror loose push the piece forward (red arrow) and out from the door. The piece can just hang by the small speaker wire or you can disconnect it.

Use a T30 Torx and remove the three T30 Torx bolts.
Figure 7

Use a T30 Torx and remove the three T30 Torx bolts. One is under the trim piece you removed. The other two are below the armrest (red arrows).

There are nine clips (red arrow) that hold the door panel in place.
Figure 8

There are nine clips (red arrow) that hold the door panel in place. Some of these clips might break or stay in the door when you are removing the panel. You want to use the proper door panel trim removal tool and get as close to the clips as possible. Prying them out will take a surprising amount of force. You want to avoid having the plastic section of the panel that holds the clips break. Also do not pull on the panel with your hands as you risk bending or damaging the panel itself.

This photo shows the approximate location of the clips and where you want to insert the tool.
Figure 9

This photo shows the approximate location of the clips and where you want to insert the tool. Make sure the tool is seated around the clip before prying on it.

With all the clips free you want to lift the panel up and out from the channel on the top of the door (red arrow).
Figure 10

With all the clips free you want to lift the panel up and out from the channel on the top of the door (red arrow). The door lock pull will stay on the door so you will have to lift the panel over it.

Tilt the panel towards yourself and slide the door pull cable (red arrow) out from the support in the door panel (yellow arrow).
Figure 11

Tilt the panel towards yourself and slide the door pull cable (red arrow) out from the support in the door panel (yellow arrow). Unhook the Bowden cable from the handle (green arrow).

The panel will still be connected to the door by the electrical connections.
Figure 12

The panel will still be connected to the door by the electrical connections. On our vehicle we unplugged the two connections by pressing in the tabs and separating them (red arrows).

The lower door light lens and assembly was actually melted or heat-bonded to the door panel on our project vehicle (red arrow) but we could still easily change the bulb or bulb housing.
Figure 13

The lower door light lens and assembly was actually melted or heat-bonded to the door panel on our project vehicle (red arrow) but we could still easily change the bulb or bulb housing. You should be able to remove the lens and housing by squeezing the tabs on the side and pushing it out the front of the panel.

Begin by pressing in the small tab on the connector (red arrow) and pulling the connector from the bulb housing.
Figure 14

Begin by pressing in the small tab on the connector (red arrow) and pulling the connector from the bulb housing.

To remove the bulb housing turn it counter-clockwise and lift it out.
Figure 15

To remove the bulb housing turn it counter-clockwise and lift it out. The bulb is replaced by pulling it straight out of the socket (red arrow). When replacing or handling the bulbs never touch the glass with your bare skin or anything with grease on it. The oils from your skin can cause a hot spot on the glass and diminish the life of the bulb. Installation is the reverse of removal.

The trunk release is located beside the speaker (red arrow).
Figure 16

The trunk release is located beside the speaker (red arrow). It is released from the inside of the panel but removed from the front of the panel.

Disconnect the wiring by pressing in the small tab on the connection (red arrow) and pulling it out from the switch.
Figure 17

Disconnect the wiring by pressing in the small tab on the connection (red arrow) and pulling it out from the switch.

The switch is held in place by a small metal clip; gently pry up the clips on each side of the metal (red arrow) while using a small set of pliers to lift the clip out.
Figure 18

The switch is held in place by a small metal clip; gently pry up the clips on each side of the metal (red arrow) while using a small set of pliers to lift the clip out.

With the clip off the switch will come out from the front.
Figure 19

With the clip off the switch will come out from the front. Installation is the reverse of removal.

The central interior locking switch is located by the door handle (red arrow); it like the trunk lock switch is released from the back of the panel and removed from the front.
Figure 20

The central interior locking switch is located by the door handle (red arrow); it like the trunk lock switch is released from the back of the panel and removed from the front.

Use a small flathead screwdriver and gently pry off the plastic cover on the back of the switch (red arrow).
Figure 21

Use a small flathead screwdriver and gently pry off the plastic cover on the back of the switch (red arrow).

Disconnect the wiring connection.
Figure 22

Disconnect the wiring connection. Using a series of trim removal tools and small flathead screwdriver release the four clips holding the switch in place (red arrows), and push the switch out the front of the door panel. Installation is the reverse of removal.

Check the door panel to make sure all the clips are in place.
Figure 23

Check the door panel to make sure all the clips are in place. This photo shows the location of the clips (yellow arrows). You can see how two of them (red arrows) stayed in the doorframe when we removed the panel.

If the clips have not broken you can just pry them out of the door and reinsert them into the panel.
Figure 24

If the clips have not broken you can just pry them out of the door and reinsert them into the panel. It is a good idea to order a few spare clips before you begin in case you damage a few. This way you will not be hung up upon reassembly waiting for clips. Installation is the reverse of removal.

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