I have a 1998 323i convertible. the drivers window started malfunctioning intermittently. first it would not drop when opening the door. then it quit working at all. I checked power at the motor & was getting a very dim light on my test light from the window switch & the top drop switch. I put 12 volts to the motor & it works fine.it came back to life for a while but has failed completely now. it is stuck in the full up position. I know there is a door striker switch & 2 switches that operate the window. is there a window module or computer? has anyone had this problem & fixed it? thanks in advance for any help.