I have a 1998 Lexus GS 400 and all of a sudden the aftermarket radio will not turn off. I have to remove the face plate but it still drains the battery overnight. I didn't put the system in it. Is there anything I can check to fix this easily
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It may be that the previous owner had an aftermarket stereo in it and removed it when he sold the car. It probably did not get hooked back up correctly if this is the case. (Many Honda radios have 2 electrical connectors on the back of the radio. One usually supplies all the inputs (Power, ground, interior lamp feed, etc.) and the other is the outputs for the speakers.
The face plate buttons actually activate small buttons on a printed circuit board behind the face plate. When I removed the radio and then the face plate many small pieces of plastic fell from behind the face plate. These small plastic pieces align the face plate button to the printed circuit board buttons. My Beeetle is almost 10 1/2 years old so I imagine the plastic is just becoming brittle with age. I could not set the radio to FM, so I removed the face plate button and now slide a toothpick in the slot to toggle between FM1 & FM2. Not he best solution, but probably the most inexpensive one. I also made my on tool to remove the radio from a diagram found at: http://www.alientech.net/nbinfo/stereo.html