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    [Pioneer MVH-S301BT] Constant metronome-like beeping while vehicle running.

    Hey all, sorry if this has been answered before but googling gave me little to no relevant answers for this issue. While the vehicle (92 F150) is running, there is a constant, soft, metronome-like beep. It happens about 2-4 seconds apart alongside any music/sound coming from the speakers. This...