The buzz might be normal sound from the fuelinjection system priming or building up pressure in preperation for starting the engine. I have driven cars that do that when the driversdoor is opened so it is not directly linked to starting the engine.
Ofcause it's hard to certain since we can't hear the buzz :-).
Yours
Zweiblumen
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Sodomy non sapiens. : I'm buggered if I know
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