2000 V70 SE, 267K miles, B5244S NA w/VVT, Denso, AW-55
It's not really a rattle; it's probably best described as a squirrel cage or hamster wheel slight knocking sound emanating from the middle dash area.
Occurs continuously when operating the car. Shut engine off with key remaining in "I" position and the sound continues. I thought it might be related to the HVAC blower fan, but the knocking sound continues when fan is selected on, and when fan is selected off.
Turn the key from "I" to "0" and the sound stops. Of note, turning the key back to "I" after selecting "0" does not bring the sound back. The sound only repeats once engine is started again.
Otherwise, everything is normal. Car drives OK. All HVAC functions work, no flashing Orange warning light, etc. All instrument gauges and lights work, too.
So, I'm baffled! Any ideas?
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