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I have a 2003 bmw 540i m-sport and my radio isn’t wired with my ignition. If I get in my car and turn it on I have to manually turn my radio on. If my radio is on an I shut my car off the radio stays on. While driving, after about 20 minutes the radio will turn itself off and I have to turn it back on. My car comes factory with the dsp radio system. Does anyone know what the problem is? I can’t figure it out at all.


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