Have an after market radio installed, been working fine for a couple years now. A couple weeks ago I noticed it doesn't turn off when I turn the key off and open the drivers door. Have to remove the face plate or turn off by pushing the power button. When I go to start the TB with the radio on it turns off when the switch is turned to the start position and then comes back on. Might be a coincidence but I noticed the door chime doesn't work now. Someone suggested it might be the ignition switch. It had 145,000 miles on it, and since they are a known problem changed it. Didn't fix the problem.