Originally Posted by
Mommasride
Update.
Received the replacement BCM same part# as the original A193 820 04 26.
The good, the window now goes up and down.
The bad, the rag top does not work.
I installed the BCM per the service manuals instructions gave it a good 30 seconds with key on for vin learning. Perhaps the replacement came from a coupe or maybe I need to give the key on learning process more time. Im $100 bucks into this at this point. I could send the original BCM out for repair at $250 more. While the BCM does at lot of things all its not doing is sending 12 volts to the window to make it go up, seems like a work around is possible because I can make the window go up by reversing the polarity at the motor? Further suggestions appreciated.
On the BCM you will find additional numbers which are the specific hardware and software. Look at your used (the one that doesn't work correctly) ; the replacement should have those exact numbers. The part number A 193 820 04 26 may be correct for your convertible. I do not know. I have a coupe and my BCM is A193 820 00 26 I believe it is manufactured by Temix 00005357 model, on 04W24, Hardware code 46/02 and Software code 27/03. Perhaps somebody with better knowledge than I will help.