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  1. 7 Series - F01 / F02 / F03 / F04 (2008 - 2015)
    Hello, my surround sound suddenly stopped working. I feel nor hear any bass. I never touched my equalizer since I had the car for 3 years. The front speakers work but the left rear speaker isn't producing sound only the right rear and front of the vehicle speakers. I don't even want to drive the...
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