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


CarAudio.com Newbie
Aug 19, 2021
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 doesn't appear to happen while running on battery power only, just when the engine is running.

The setup is pretty simple, just the 4 normal interior speakers and a single sub + amp. The problem is relatively new, only happening for the past 3 or 4 months (have had the same system for years with no issue).

Any ideas? Thanks in advance!

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