No rear lights..no passenger door locks and incorrect fuel guage.?

Question

All these seem to be connected together somewhere. I think it might be a broken ground but i searched everywhere. The rear external lights dont work along with the passenger door lock and incorrect gas guage. NOW...the car has a mind of its own...it works when it wants to. Sometimes whiles driving it will all start to work.

Answer 1

There should be a control module for those exact items. Something like a "REM" (rear electronics module) - a computer brain. May need replacement or software update.

Answer 2

loose wire  or burnt fuse  that  connects as you hit bumps

Answer 3

what kind of car?

Answer 4

Are you talking about brake lights or parking lights sometimes called marker lights. I'd look for a bad connection someplace, wish you luck on that part, the fuel gauge could be a bad sending unit.