Hi
The other day I did something REAL stupid..... I forgot the sunroof open. We had a nice bit of rain and the next morning nothing was working in the car.
I opened everything and dried it. I used a non conductive spray on the centre console buttons, ect. After this it still did not work.
I charged the battery and took the BeCM apart.
Now everything is working except the #3 button on the radio.
So maybe you must just strip everything and make sure that all the connectuions are Ok. Apparently the BeCM can do funny things if your battery is low. So check that as well.