tda1

I am experiencing issues with the windows. The original owner had disassembled the doors thinking that the motors had gone bad. There was no indication that he had checked or replaced the fuses or relays so I figured that would be the best place to check first. I also checked the connections for the switches to make sure they were making contact. I believe they are...
Today I replaced the fuses and relays and still nothing.
Any suggestions on how I might be able to look next?

Avar928

Brett,

I found this thread. It has some good links with comprehensive information about the windows.

Is the motor running when you hit it?

Jetdriver69

What thread? I'm having the same issue, but I can hear the motor running. I think the window is off it's track.

Mongo

Sounds like switches to me... I have to press somewhat hard on my driverside one to roll it up. I did recently fix it by pulling the switch out of the console and removing the plastic 'rocker' on top to access the connections below it. IIRC there is a small tab that gets pushed down over time, preventing the switch contacts from touching. This will cause intermittent issues and even non-functional windows.

tda1

Avar...there is no motor running..no sound...nothing. must be in the switch somewhere.

I'll take a look at the contacts in the switch.

tda1

Pulled the switch again and rechecked all of the connections. I now have the right side motor working with the switch so I know at least that side should work once I get the door reassembled. The right side is still sketchy. Motor maybe?? All of the connections look ok.

Hollisterkiid92

I recently fixed my drivers side window, the bolt that was there before was not the original, the PO did this. I bought the bolt and the plastic roller from autoatlanta, and installed it, when it fell off the rail, the motor still moved so if you can't hear the motor running, that's something else.

tda1

just to clairify...the motor was removed on the passenger door so I just hooked it up to the connection and tried the switch. The door is pretty much in the state yours is in but he had removed and disassembled the motor :banghead

I'm going to reassemble the door tomorrow and try it then. If that works it looks like I may have to do the same to the driver door.

RET

You might also check for broken wires in the door harness. Sometimes the conductor is broken from the continued flexing but the outer sheath is intact, so a visual inspection might not show the problem. I had a few of those....

Mike Frye

Here are the problems I've traced to window not working:

1. Switch- This is often caused by warping of the center console that affects the ability of the switch to make contact. Since it's a mechanical switch it may even be touching just a bit, but not enough to make contact. If you pull the switch out of the console you should be able to figure out if it's not moving enough. You may have to 'shave' a bit of the corner of the actual rocker part of the switch to get it to move freely in the console without binding.
2. Wiring- You can confirm the wiring (and fuses) by unplugging the motor plug inside the door and putting a voltage meter (VOM) on the two terminals leading to the motor. Activate the switch and you should get 12vdc. If not, it's upstream. If you get voltage something is going on with the motor/mechanism.
3. Remove the motor and try again with the motor out and plugged into the wiring. If it spins freely then the mechanism is jammed or maybe the grease has just turned into glue (need to thoroughly clean and re-grease the mechanism).
4. Motor- If the plastic cover in your door is not in the right place, water can just run down into the motor and rust the armature. Rather than make the windows water tight, Porsche put drains in the bottom of the doors and just planned to have it run through the door. The plastic cover is your only protection. You can disassemble and clean up the motor by chucking the armature in a drill and spinning it on some fine sandpaper. This will clean off the rust and allow it to spin freely/make contact. Be careful when you reassemble, the brushes are hard to get back into place. You may need to use a paperclip to hold them apart while you work it into position. I've done this on both of my doors and it makes the window roll up and down more quickly as well.

tda1

Thank you very much Mike. I'll run thru the list tonight and see what happens

Avar928

I forgot to link the thread!

https://rennlist.com/forums/928-foru...ndow-inop.html