Thread: DSP Disappeared
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Old 06-22-2012, 09:03 AM
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Brian-bmw Brian-bmw is offline
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DSP amps rarely fail due to a flat battery. Additionally, DSP amps rarely lose their coding as well. That said, nothing is impossible, and you could have had a coincidental event.

The early DSP amps made by Philips did have some failure issues, but those were discontinued in 1998. I can't tell the year and model of your car, but I assume that it is newer than 1998. Additionally, if your car is newer than 2002, it would have a new generation BM53 or BM54 radio module. Your symptom of the DSP option disappearing is known occurrence in cars with a bad battery and a new gen radio.

If it is not the battery, then the next most likely failure is the DSP amp. If the radio audio output had failed, you would still have the DSP option on the menu.
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