Please help if you have had the same issues. I have a 2010 300C SRT8 and almost every morning i have to jump start my car. After spending quite a bit of time at the Auto elecs, i wasn't much closer to finding the problem so i started playing myself with the radio and iPod cables because i noticed that if i sat in the car and locked it, a fan type noise coming from the radio would stay on for up to 10 mins or more ( i just didn't want to sit there any longer ). So i actually just disconnected the radio at the back of the unit and the next morning the car started straight away and hasn't drained again. Is there something that is supposed to turn the radio off or can something be done to the computer? I can't handle driving around with no music or navigation for much longer. Someone said to disconnect the amp under the steering wheel and connect the radio again but i did that and without that amp there are no speakers. Another thing i noticed when i unplugged the radio, after about half an hour with the ignition off and the radio still plugged in but not on , the radio was red hot!! almost to hot to hold your hand on it!! I can't tell if the radio is faulty all of a sudden or if something else is faulty causing the radio not shut down or causing it to heat up so much that the fans can't shut down..Any advise would be amazing please..