Comment by andreasley
6 years ago
My first car (bought used) had a weird bug: When it had been parked overnight on a steep slope facing downwards, the driver's electric window sometimes wouldn't go back up. Rain would increase the chance of the bug occurring.
All other windows were fine and the problem would go away after a few hours of driving. The bug never occurred if the car was parked on a flat surface.
The mechanics were clueless. I've found that there's a so-called "convenience comfort module" located under a front seat. This electronic module was responsible for controlling the electric windows (amongst other things) and was insufficiently sealed. Water could enter and disrupt certain functions. My dealer wouldn't even believe me that this module exists. :)
Turns out other people had the water problem, too: https://www.youtube.com/watch?v=C9z7iEbg3qY
> parked overnight on a steep slope facing downwards
I had a car which couldn't be parked that way either! Turned out, the reverse gear on a 1985 Honda Civic with a 4-speed manual was too low - the tiny engine simply didn't have the power to back up uphill. Unless I could guarantee that nobody would parallel park close to my front bumper, the car would be stuck in the parking spot!
You parked your car and left the windows open?
No; after letting them down the following day, the one on the driver's side just wouldn't go back up again or would even go down by itself once the car was started.