Windows not dropping with handles

[winddude_999]

My windows aren't dropping in my 2000 boxster(986) when the handles are pulled, this is for both doors:

Here's what I've confirmed so far:

- the micros-switches for both handles work, and pass a continuity test, the exterior one looks brand new.
- the micro-switch in the door latch is worn, but the window drops when it's pressed manually.
- jumping the connector for either door handle micro-switch does not cause the window to drop

I'm wondering where else the fault could be... wiring harness... or is there something else obvious like a fuse I might be missing.

[tcora]

Check the function of the door latch switch by opening and closing the latch, not just by manually pressing the switch.

[djnolan]

On a 987 , clearing codes will clear up some some problems. Not sure about a 986. Do you have access to a scan tool?

Also there is this thread. Rennlist 9x7 window guide: https://rennlist.com/forums/diy-boxster-and-cayman-diy/1284222-replacing-a-9x7-door-lock-actuator-using-a-cheap-vw-part.html

[dedyplay]

You've done thorough troubleshooting. Next steps:
1. Check the wiring harness: Inspect for damage, corrosion, or worn-out connectors between the door handles, door latch, and the window regulator.
2. Fuse and relay: Verify the window regulator fuse (usually in the rear trunk area) and the door window relay (in the instrument panel) are functioning.
3. Window regulator: It's possible the regulator itself is faulty. Check for any signs of wear or damage.
4. Central locking control unit (CLCU): As the CLCU controls the windows, it might be worth checking its connections and functionality.
5. Consult the wiring diagram: Study the diagram to ensure you're not missing any connections or components.

[dedyplay]

If you're still unsure, consider consulting a Porsche specialist or a professional mechanic.

[winddude_999]

Originally Posted by dedyplay

You've done thorough troubleshooting. Next steps:
1. Check the wiring harness: Inspect for damage, corrosion, or worn-out connectors between the door handles, door latch, and the window regulator.
2. Fuse and relay: Verify the window regulator fuse (usually in the rear trunk area) and the door window relay (in the instrument panel) are functioning.
3. Window regulator: It's possible the regulator itself is faulty. Check for any signs of wear or damage.
4. Central locking control unit (CLCU): As the CLCU controls the windows, it might be worth checking its connections and functionality.
5. Consult the wiring diagram: Study the diagram to ensure you're not missing any connections or components.

- i do need to finish checking the wiring harness.
- pretty sure all the fuses are under the dash? or where in the trunk is the window regulator fuse? although windows drop with the buttons, and window regulator switch
- window regulator seems good, no slack, goes up and down with no issues, door latch drops the window
- CLU - that is my fear.
- any link to a the appropriate wiring diagram?

Originally Posted by dedyplay

If you're still unsure, consider consulting a Porsche specialist or a professional mechanic.

- that's a good one, you're a funny guy.

[tcora]

Originally Posted by tcora

Check the function of the door latch switch by opening and closing the latch, not just by manually pressing the switch.

Did you do this? My experience is that the switch can be good, but the cam which rotates to depress it can be worn, so the windows don’t drop.

[winddude_999]

Originally Posted by tcora

Did you do this? My experience is that the switch can be good, but the cam which rotates to depress it can be worn, so the windows don’t drop.

Yes, I did, and rebuilt the height of the button / worn cam with layers of shrink wrap. So it's working well now. But the handles aren't dropping the window.