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Door Latch Replacement
 
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Pelican Technical Article:

Door Latch Replacement

Nick Czerula

Time:

3 hours3 hrs

Tab:

$200

Talent:

****

Tools:

T20 & T30 Torx bits, flathead & Phillips head screwdriver, trim panel tool

Applicable Models:

BMW Z3 (1996-02)

Parts Required:

Door latch, door panel clips

Hot Tip:

Disconnect battery before working with electrical components

Performance Gain:

Restore power door lock and door latch function

Complementary Modification:

Replace center console switches

The door latch is located inside the door. It is responsible for latching the door closed. It also has an integrated door lock solenoid. The latches fail from normal wear and tear, sometimes creating a situation where the door will not stay closed. The most common failure is the door lock solenoid failing, causing an issue with the power door locks unlocking or locking. If you have a faulty door latch, use this tech article as a guide when replacing yours.

Remove the window regulator. See our tech article on window regulator removing.

Working at the jamb of the door, remove the T30 Torx fastener (green arrow).
Figure 1

Working at the jamb of the door, remove the T30 Torx fastener (green arrow). This fastener secures the top of the outer window guide.

Next, working on the inside of the door at the bottom of the outer window guide (green arrow), mark the location of the guide to the body (yellow arrow).
Figure 2

Next, working on the inside of the door at the bottom of the outer window guide (green arrow), mark the location of the guide to the body (yellow arrow). This will help with getting the window in the same position it was before removing.

Working at the bottom of the door, remove the 10mm window guide fastener (green arrow).
Figure 3

Working at the bottom of the door, remove the 10mm window guide fastener (green arrow).

Once both fasteners are removed, remove the window guide from the door.
Figure 4

Once both fasteners are removed, remove the window guide from the door. Feed the top of the guide out first when removing.

Working at the interior door handle, remove the T20 Torx fastener.
Figure 5

Working at the interior door handle, remove the T20 Torx fastener. The fastener size may be different on your vehicle, if a T25 does not fit, try the next lower or higher size.

With the fastener removed, pull the handle toward the jamb of the door to detach it.
Figure 6

With the fastener removed, pull the handle toward the jamb of the door to detach it. You have to unclip the plastic retaining clip (green arrow)

Next you have to unhook the latch rod from the handle.
Figure 7

Next you have to unhook the latch rod from the handle. Then remove the handle from the vehicle.

Working inside the door at the latch, unclip the plastic lock (green arrow) and remove the outer door handle rod from the latch.
Figure 8

Working inside the door at the latch, unclip the plastic lock (green arrow) and remove the outer door handle rod from the latch. Then unclip the wiring harness from the latch. When the latch is unbolted later in the this procedure, you will have to unhook the door handle lever (yellow arrow) from the latch.

Working inside the door toward the top outer corner, unplug the yellow electrical connector by squeezing the release tabs and pulling apart.
Figure 9

Working inside the door toward the top outer corner, unplug the yellow electrical connector by squeezing the release tabs and pulling apart.

Next, remove the T30 Torx door latch fasteners (green arrows).
Figure 10

Next, remove the T30 Torx door latch fasteners (green arrows). These fasteners have Loctite installed from the factory, which makes them hard to get out, be sure your Torx bit has good purchase.

Once the fasteners are removed, feed the door latch out of the door.
Figure 11

Once the fasteners are removed, feed the door latch out of the door. You will have to feed the door lock rod down out of door as you remove latch. Once out, unplug door latch by sliding electrical connector in direction or green arrow.

Next, transfer over the function rods (green arrows) to the new latch if needed.
Figure 12

Next, transfer over the function rods (green arrows) to the new latch if needed. Install the new latch into the door, connect the electrical connectors and reassemble the latch components. Before shutting door, check latch function. Use a screwdriver to close latch. Then open and latch it again using each door handle. Then lock and unlock it from the inside and the lock cylinder. Be sure everything works correctly, then reassemble the door and recheck operation..

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Page last updated: Fri 12/9/2016 02:06:46 AM