oncidium

Last Saturday I went out for breakfast and when I drove home and turned off my car, I noticed that both my driver and passenger windows rolled completely down.

I closed both doors, rolled both windows back up and turned off the ignition. After about 1 min, both the windows automatically rolled down again.

I've done hours of research on this forum and others but haven't found any solutions. I ruled out the fob by taking the battery out, I've reset the motors by taking the door panels off and following the procedure outlined here, but i'm still having the same issue.

I finally just rolled both windows up, popped out the window switch control box on the drivers side, and unplugged the windows. It's not the prettiest fix, but at least I can drive my car without worrying about it being stolen.

I purchased this car new and haven't made any modifications or changed anything with the electrical system.

Any advice or help would be greatly appreciated!

NG15

iTrader: (2)

this was happening to me when i purchased my z. You have to reset the window motors. Mine worked normal after i did that

reecepieces

NG15 if you see in Oncidum's post, they already removed the door panels and reset the motors but it THEY ARE STILL HAVING THE SAME ISSUE. My son owns a 2005 350z and he is having the same problem with his car. We also reset the motors and are still having the same issue with the windows rolling down after the car doors are opened. Oncidum if you happen to resolve this issue please let me know. I am going to buy a new body control module and have it replaced. I will let you know if that resolves the problem. Hope everything works out for you. I'm wondering why it is that Nissan doesn't take the responsibility for this issue. It seems that it happens in random Nissan vehicles and frequently for that matter.

KingBaby

iTrader: (3)

It's the BCM please confirm or deny reesepieces!

redline06

Damn that doesnt sound fun, hope you figure it out. Did you try disconnecting the battery? Also a capacitor discharge, disconnect both negative and positive battery connectors and put them together for a couple minutes using a visegrip to hold them. Doesnt hurt to try. Good luck

oncidium

I still haven't resolved the problem, but once I do i'll update this thread. I've just been driving around with my windows disconnected.

I'll try the capacitor discharge as recommended by Redline tonight.

Another strange thing I noticed is that my alarm went off when I was trying to debug the windows. The strange this is that I didn't purchase my car with an alarm. I was sitting in my car, locked the door and when I went to open the door the car horn started honking.

bmyles

Yeah, that's the panic feature. Clearly this goes beyond just your window motors. I wonder if yours is a BCM problem as well.

Spike100

^^ Agreed... mI’m guessing a BCM issue here as well since the Z’s alarm system would not roll down the windows for easy access during a potential burglary threat.

--Spike

oncidium

A couple of months ago I was driving down Los Feliz, in Los Angeles California. Person in front of me jammed on their breaks and I ended up hitting the back of their car.

There was pretty much 0 damage to my z as it was a very minor accident, however, I noticed the next week that my windows started working again. So I thought I'd head over to these forums to update everyone.

npr350z

iTrader: (1)

My passengers side window started doing this...I got really mad after I sat outside and it stayed up...then when it rained it decided to go down...I was pissed and I slammed the door. Hasn't done it since...so 3 months good now.

Emski

So far the fixes are rear ending another car and slamming the door. There is got to be a better solution.

oncidium

I'm sure running into a wall at a low speed would also be effective

npr350z

iTrader: (1)

Reseating the window motor? Taking it out and putting it back in, then some loctite.

myfirstzcar

Try sticking the key in the door and working it back and forth a few times.

npr350z

iTrader: (1)

Or waving your peep at it and yelling obscenities? It might only work if you have a pot on your head like a hat, and you huffed some paint. I didn't see you model year.

oncidium

It's a 2007 350z. I actually took apart the door to clean and reset the motor. Nothing worked except the impact. Very strange, I'm sure there is a logical reason for it but I'm not about to put any more effort into figuring it out.

Hopefully this thread will shine some light into the issue for other people trying to google the same problem.

Whiteazn2

Idk if u guys new this but when you hold down the unlock button on your remote the windows go down just fyi.

oncidium

Yes we know. I even went as far as eliminating the fob as a problem. It specifically happens when the door shuts and the car is off. The windows will automatically roll all the way down on both sides. No holding the unlock button down necessary.

myfirstzcar

Try using the key in the door, since it works just like the fob, only the windows will also go up.

Oncidium said this: "Nothing worked except the impact", so it only makes sense to try using the key cylinder a few times.

gacook

Sounds like an electrical connection issue on the motor to me. As in, connection was not "optimal" and causing open/close issue, telling the switch to roll down the windows; impact jogged the connection.

So, I'd pull it apart, disconnect the connector from the motor and clean all the contact points really good.