My windows go down and sunroof opens up on their own when the car is just sitting parked and in the off mode. It only happens when it rains. I think that something in the computer gets wet. This is a 1999 bmw 323i. What causes this? How can I stop this from happening? Thanks in advance for your assistance.
My windows go down and sunroof opens up on their own when the car is just sitting parked and in the off mode. It only happens when it rains. I think that something in the computer gets wet. This is a 1999 bmw 323i. What causes this? How can I stop this from happening? Thanks in advance for your assistance.
its definitely an electrical issue. Probably a case of crossed or exposed wires. There really is no other option but to take it to a dealership and have them fix it.
I have been dealing with this problem for 3 months while parked at the train station. Thankfully, it has not happened on a rainy day but it is disconcerting to find the car with four windows and moonroof fully open when I return to the car after riding the evening train. I think I have isolated the problem to the driver's door handle key lock. I sprayed some lock lubricant into the opening to disperse any water that may be causing a short. For now, I remove the central locking fuse #49 and lock the car manually after I park at the train station. I performed overnight tests locking the car in the garage to see if the windows are open in the morning. After a half a dozen tests, the car stayed locked.
dont know if youve found an answer yet.. im having the same problem with my 2000 323i.. talked to a guy a while ago and he said its prob the door lock actuator.. for me it only happens when its hot out... anyway. if you hold down the unlock button on the key it sends a signal to the actuator telling it to unlock then roll all the windows down.. its a problem with the actuator... its faulty and thinks its getting that signal.... there have been times where ill walk away after locking it and ill hear it unlock and turn around to c them all opening up.. im still working on finding out more.. if i do and fix it ill post here..
Interesting topic, just ran across it. I was thinking it could be the relay that controls the circuit. I know mechanical relays are sensitive to climate changes over time. The spring pre-load gets weak or the contacts (similar to ignition points) get corroded. Sometimes simply taking it out, take the top cover (metal or plastic) off then cleaning the contacts will bring the relay to life. Of course, purchasing a new relay is a better option also.
Hey Jace..I have a '99 323i and I was told the same thing (door lock actuator)...after doing some initial research online I was getting scared and I thought it was a faulty General Module but now it looks like it could be this...did you get yours fixed? Did you replace both front door lock actuators or how did you determine which one it was? Thanks in advance!
Matt as for the relays. ..I want to see if I could be something as simple as that but when I opened the cover that I just looked completely different to the one you showed and I was confused as to which relay I had to clean exactly... I don't know if you could help me out on this one it would be greatly appreciated!
This was just an example (relay panel in a 96 Mercedes C280) All relay or typically the same just located in different areas for different cars I know BMW usually have a covered box in the engine bay that has a clamp or lever that holds the cover down of course there are more relays and fuses under the rear seat for other circuits
water is getting in the switch in drivers door thats attached to the lock if you hold the key in lock position and windows are down they will close and so will sunroof, if you hold in unlock position with windows closed the lot will open. rip the door panel off and check the switch thats next to the lock
there is no relays or anything under the bonnet that control windows or locking, the control box is behind the glovebox although you could have a leaking windscreen and waters dripping onto it but that very unlikely check the doors its comon that the micro switches play up
I dont know what shape u have because your car is the time change for the E46 if its an earlier E36 car like the 1 in the picture, there is a switch on the door catch that over time wears down this can play around with the full closure locking if its really worn the interior light wont go out when the door is closed but have a look I had it on mine and I stuck a small bit of rubber on the end to make the door push it in further and everything was fine, my window would drop a quarter way down and it wouldnt seal when the door shut.
LOL yea I have dealt with E21, E28, E30, E32, and E34 but not with an E36.... And MBZ W124, W201, W202, W210 chassis models.
just happened to my 2003 330XI. Worth noting my auto key lock's been failing for 2 weeks now-started in extreme cold. Works on rare occassions but usually have to unlock manually
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