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Headlight Switch Replacement
 
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Pelican Technical Article:

Headlight Switch Replacement

Nick Czerula

Time:

2 hours2 hrs

Tab:

$200

Talent:

***

Tools:

Phillips head screwdriver, plastic prying tool

Applicable Models:

BMW Z4 Coupe/Conv (2006-08)

Parts Required:

Headlight switch

Hot Tip:

Pry gently when removing switches so as to not mar the interior finish

Performance Gain:

Proper light function

Complementary Modification:

Replace headlight bulbs

The Light Switch Module in the dashboard controls exterior lights and exterior light functions. Some of the exterior light functions include:

  • Exterior bulb monitoring
  • Bi-Xenon headlight operation

In addition, LM keeps a redundant copy of vehicle data. This includes the make and model of the vehicle plus current odometer and maintenance / service information. The same data is stored in the instrument cluster and the CAS modules.

The headlight switch is located on the dashboard. Trim pieces in the BMW Z4, including the dashboard and switches, are made of hard plastic. Plastic clips or metal screws may be used to hold them in place. To avoid marring the trim, work with a plastic prying tool or wrap a screwdriver tip with masking tape before prying out trim panels, switches or electrical accessories.

The headlight switch is located on the left side of the steering wheel. An indicator of a problem with the headlight switch would be a non-functioning headlight with an illuminated instrument panel. You may also have a chime warning sound. The sound is similar to when you leave your headlights on when exiting the vehicle. The headlight switch is replaced as one unit. Once replaced, the switch requires programming using a BMW scan tool.

Keep in mind that when your car was serviced before, parts may have been replaced with different size fasteners used in the replacement. The sizes of the nuts and bolts we give may be different from what you have, so be prepared with different size sockets and wrenches.

Protect your eyes, hands and body from fluids, dust and debris while working on your vehicle. If you're working with the electrical system, disconnect the battery before beginning. Always catch fluids in appropriate containers and properly dispose of any fluid waste. Recycle parts, packaging and fluids when possible. Do not work on your vehicle if you feel the task is beyond your ability.

Vehicle models change and evolve, as they grow older, so the vehicle shown in our illustrations may vary slightly from yours. If something seems different, let us know and share your info to help other users. Do you have questions or want to add to the article? Leave a comment below. When leaving a comment, please leave your vehicle information.

The headlight switch is located on the dashboard (green arrow).
Figure 1

The headlight switch is located on the dashboard (green arrow). Trim pieces in the BMW Z4, including the dashboard and switches, are made of hard plastic. Plastic clips or metal screws may be used to hold them in place. To avoid marring the trim, work with a plastic prying tool or wrap a screwdriver tip with masking tape before prying out trim panels, switches or electrical accessories.

Using a small flathead screwdriver, gently lever out the small plastic cap at the left side vent (red arrow).
Figure 2

Using a small flathead screwdriver, gently lever out the small plastic cap at the left side vent (red arrow).

Next, remove the top (green arrow) and the bottom (red arrow) vent Phillips head screws.
Figure 3

Next, remove the top (green arrow) and the bottom (red arrow) vent Phillips head screws. To access the bottom screw, open the cup holder.

Slide the vent with the cup holder (red arrow) out of the dashboard.
Figure 4

Slide the vent with the cup holder (red arrow) out of the dashboard.

Using a plastic prying tool, gently lever out the headlight switch with the trim panel.
Figure 5

Using a plastic prying tool, gently lever out the headlight switch with the trim panel. Start at the outside (red arrow) and work your way toward the steering wheel.

Working at the top of the headlight switch, remove the two Phillips head screws (red arrows).
Figure 6

Working at the top of the headlight switch, remove the two Phillips head screws (red arrows).

Slide the switch out of the dashboard until you can see the electrical connector.
Figure 7

Slide the switch out of the dashboard until you can see the electrical connector. Then press the tab (red arrow) and fold the lever toward the rear of the vehicle (green arrow). You can also flip the lever through the hole for the vent, but I find this easier.

Slide the switch back into the dashboard.
Figure 8

Slide the switch back into the dashboard. Then lift the connector (red arrow) off the switch.

Remove the switch from the dashboard (red arrow).
Figure 9

Remove the switch from the dashboard (red arrow). Install the new switch. Slide it into the dashboard. Then install the connector working through the vent hole. Reverse the remaining steps to reassemble the switch and the trim panel. Program the new switch using a BMW scan tool.

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Page last updated: Mon 12/5/2016 02:58:20 AM