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Interior Mirror and Rain Sensor Replacement
 
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Pelican Technical Article:

Interior Mirror and Rain Sensor Replacement

Nick Czerula

Time:

0.5 hours

Tab:

$200

Talent:

**

Tools:

Small flathead screwdriver

Applicable Models:

BMW Z4 Convertible (2003-06)
BMW Z4 Coupe (2006)

Parts Required:

Mirror, rain sensor adhesive

Hot Tip:

Rotate mirror only by arm

Performance Gain:

Proper mirror function

Complementary Modification:

Replace exterior mirrors

The interior or rear view mirror on BMW Z4 models can come equipped with an auto-dimming feature. It is mounted to the center front of the roof using a metal spring clip. It can be removed easily and replaced just as quickly.

The interior mirror is serviced as a unit. The most common failure of the mirror is the pivot wearing, causing a rattle or mirror movement over bumps.

The light and rain sensor is mounted behind the mirror cover and can be serviced once the mirror is removed. The sensors are pretty solid, other than the mounting gel. The gel can be replaced and the sensor remounted. You can use either the factory mounting adhesive, or clear RTV which some people find to work well. Permatex clear RTV 66B(R) works well.

Remember your car may have been serviced before and parts 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 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. Never work on your vehicle if you feel the task is beyond your ability.

Our vehicle may vary slightly from yours as models do change and evolve as they grow older. If something seems different, let us know and share your info to help other users. Questions or want to add to the article? Leave a comment below. When leaving a comment, please leave your vehicle information.

The interior or rear view mirror on BMWZ4 models can come equipped with an auto-dimming feature.
Figure 1

The interior or rear view mirror on BMWZ4 models can come equipped with an auto-dimming feature. It is mounted to the center front of the roof using a metal spring clip. It can be removed easily and replaced just as quickly. The interior mirror is serviced as a unit. The most common failure of the mirror is the pivot wearing, causing a rattle or mirror movement over bumps. The light and rain sensor is mounted behind the mirror cover and can be serviced once the mirror is removed. The sensors are pretty solid, other than the mounting gel. The gel can be replaced and the sensor remounted. You can use either the factory mounting adhesive, or clear RTV which some people find to work well. Permatex clear RTV 66B(R) works well.

First the mirror trim has to be removed.
Figure 2

First the mirror trim has to be removed. As you remove the two pieces, rotate the mirror away from the side you are removing to free the section that goes into the mirror back. Using a plastic prying tool, lever open (red arrow) the mirror trim.

Then remove each side (blue arrow), rotating the mirror (red arrow) to free each piece as you remove them.
Figure 3

Then remove each side (blue arrow), rotating the mirror (red arrow) to free each piece as you remove them.

Rotate the mirror using the arm (red arrow) to detach the mirror from the mount.
Figure 4

Rotate the mirror using the arm (red arrow) to detach the mirror from the mount. You will have to rotate about 90 degrees.

Pull the mirror down and remove the electrical connector from the arm.
Figure 5

Pull the mirror down and remove the electrical connector from the arm. Disconnect the electrical connector by pressing the release tabs (red arrow) and pulling it apart (inset). When installing, start with the mirror 90 degrees off center to align the spring with the mount. Press the mirror up while rotating it 90 degrees. Reinstall mirror trim and you are done.

To repair or replace the rain sensor, start by unplugging the electrical connector (red arrow), pull it straight out.
Figure 6

To repair or replace the rain sensor, start by unplugging the electrical connector (red arrow), pull it straight out.

Working at each side of the sensor, press the tab (red arrow) down.
Figure 7

Working at each side of the sensor, press the tab (red arrow) down. This photo shows the tab in the locked position.

Working at each side of the sensor, press the tab (red arrow) down.
Figure 8

Working at each side of the sensor, press the tab (red arrow) down. This photo shows the tab being pressed down using a small flathead screwdriver. The bottom portion of the locking tab will protrude when unlocked.

Remove the sensor (red arrow) from the mount by pulling it straight off.
Figure 9

Remove the sensor (red arrow) from the mount by pulling it straight off. When removed, clean the purple sensor window using a lint free cloth (wipe it down).

Next you have to lever the mount off the windshield (red arrow).
Figure 10

Next you have to lever the mount off the windshield (red arrow). If the adhesive is damaged, it should pull off with some effort. If needed, use a plastic prying tool to lever it off. Be careful not to damage the windshield glass. Once removed, clean the mount and install the new adhesive. Thoroughly clean the windshield mounting area with alcohol and be sure it is debris free.

Press mount onto the windshield aligned with the opening in the opaque section (red arrow).
Figure 11

Press mount onto the windshield aligned with the opening in the opaque section (red arrow). Be sure the sensor adhesive is bubble free. Tape mount to windshield and let cure for 24 hours. Time may be longer in cooler locations. Reinstall sensor and secure mounting tabs. Reverse steps to install remaining items.

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Page last updated: Wed 12/7/2016 03:00:37 AM