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  1. X5 E53 (1999 - 2006)
    Hi everyone, I have a 2004 X5 and had a X5 park aid installed (part number 82-11-0-021-343) when I purchased the car. It has been great until last week when it stopped working. Now when I put the car in reverse, I hear a loud beep for a second or two and the rear sensor doesn't work. Please...