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This has just started in the past few days. About 90 seconds after I turn off the engine, it will start emitting what sounds like an almost perfect sine wave at a little over 1kHz. It lasts for another 90 seconds or so, and then quickly fades out.

Audio here: https://db.tt/KKJ4IFls

Because it doesn't last long, I haven't yet been able to pinpoint exactly where it's coming from, but it seems to be from the engine compartment.

As you can hear in the audio, it continued even when I took the key fully out.

Isvara
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1 Answers1

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That sounds like a speaker type sound.. Is there an old alarm siren fitted somewhere that could be causing this? If so try unplugging it.

Orb
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