1993 Mercedes 190-E 2.6L car with 129,000 miles - The old Cell phone power goes off & on for no reason. I try to turn it off and it comes back on, now my antenna goes up & down as well when the car is on and off. The cell phone problem happened a few years back and I was able to garage the car and the problem pretty much went away. Now the car is outside again and the problem is even worse (can't turn off the phone even if I hit the power off and the Antenna issue is new) than before. I've taken out the fuse until I can resolve the problem. Any suggestions would be appreciated. Thanks