Wow! I suppose I've been living in a cave or something. I've never heard of an electric bed over the drivers seat. Actually, that's just plum scary! Electronics (anything) is doomed to failure eventually. Someday, IT will fail. What would happen if failure occurred while you were driving and the bed came came down. Wow! That's just plum scary!
My suggestion? Now that it's broken, just keep it broken and raise and lower it manually and tie the sucker up so it won't accidentally come down while driving. Just my 2 cents and initial thoughts!