My Becker Map Pilot stopped working on my Mercedes all of a sudden. I contacted Becker who weren't much help. After repeated emails and phone calls they just kept telling me to go on line, plug the unit in and reregister it even though it was dead and wouldn't communicate. I googled the problem and came across Revtronic who offer a repair service for the Map Pilot. I posted it to them on Wednesday it was returned fully repaired the following Friday. Problem sorted, excellent service.