Hi everyone im new to this forum hope you can help. MY grandson has an audi a3 2010 1.9 diesel convertible. The electric roof, the passanger front window and the passanger central locking does not work. The only way that I can get it all working OK is to disconnect and reconnect the conector on the passanger A pillar. It all work fine but after several times of operating it all drops again. I then have to do the same thing all over again. Not sure what the problem may be a bad earth. I would be very grateful if someone out there has a solution. Thanks in advance.