Windows rolling down on their own and trunk opening?

CONNOR SPARKS

MEMBER
2013 VOLKSWAGEN PASSAT
2.5L
2WD
AUTOMATIC
200,000 MILES

I need to know what would pull for my windows and trunk. The windows roll down on their own and the trunk opens on its own while driving. The window controls on the driver's side door are acting on their own as well as the passenger door. There is a switch to open the trunk on the driver's side door so I'm sure all of these are tied together somehow. What I can't find is what to do to pull to stop this from happening before I can get a mechanic to work on it. I'm assuming the problem is a relay or shared control module for the doors but I can't find a schematic to help me.

6 Replies

KEN L

MASTER CERTIFIED MECHANIC
46,907 POSTS

This happens when the main window control switch gets wet or goes bad. Also, I would remove the electrical connector and check for corrosion. Here are the wiring diagrams so you can see how the system works and how to change out the main window switch. As you can see the switch is the only thing both of these problems share. Check out the images (below). Let us know if you need anything else. This shows the passenger's side but the driver's side will be the same just a little larger.

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Thursday, September 26th, 2024 AT 3:50 PM

CONNOR SPARKS

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4 POSTS

Thank you very much it's been a pain trying to find those schematics. I don't see where the trunk lid is tied to the window controls switch though. Could I just pull the 5A fuse number 26 to stop it from opening?

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Thursday, September 26th, 2024 AT 3:56 PM

CONNOR SPARKS

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4 POSTS

The switch for the trunk lid is a separate switch on the door, not connected with the 4 window switches and the child lock button which are all in one unit.

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Thursday, September 26th, 2024 AT 4:01 PM

KEN L

MASTER CERTIFIED MECHANIC
46,907 POSTS

Hmm, I would unplug the trunk latch, so it just works with the key only. Also, I see there is no connection between the door and the trunk as well, there must be a wiring issue inside the door, I would open the door and move the wiring harness around between the door and the jam to see what happens. Let me know.

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Friday, September 27th, 2024 AT 10:33 AM

CONNOR SPARKS

MEMBER
4 POSTS

I removed the window control switch hoping it would fix the issue and it didn't. The windows are still rolling down without the switch connected to the short has to be somewhere in the door. Do you have any images showing how to take the door panel off and what to disconnect?