Hi guys,
this question probably comes up a lot but I believe my situation may differ,

basically when I engage reverse I get one long beep and then nothing. hooked the car up to diagnostics and it said all four of the rear sensor and the front centre left.

My question is, is it really the case that 5 of my sensors have failed or is their any other item that can cause this sort of fault.

Thanks in advance guys

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01 e53 x5 4.4