Rear Passenger Window Going Up And Down On It's Own

[mofazhasan]

Hi guys. 

 

My 2004 C8 having it's rear passenger window (left side only) going up or down on it's own. I usually put it in close position, sometime when driving it will go down on it's own.. and after some time.. going up again. In parking, when I press lock on the key fob, or even lock it manually, if all window in close position, it will go down. I need to pull up the window switch at driver side and twisting the ignition key simultaneously to make it close again.

Weird thing is, the switch will not work if I just pull it up in normal scenario. I need to pull it and twist the ignition key simultaneously, then only the window will close. It is also not working if I press down to switch.

Same situation with the passenger side switch. Imagine this happened when driving in heavy rain.... I need to stop the car, then use that "magic trick" to close it again.. and sometime it happened a few times along the way....

 

Any advice is appreciated. Thanks.

[Simple]

@mofazhasan,

What are you describing are the signs of BSI erroneous behavior. Please follow the BSI reset procedure I told you in the other post...

 

Also, clean the connectors at the bottom of the doors and the pillars.

 

Good luck, Simple.

[mofazhasan]

Thanks. Ok. I'll give it  a try.