[ezmaass]

So, I had my 650 in for service, and I also had them do a CPO since I plan to keep the car now. Upon driving it home today, I locked the car and noticed that it was making a strange (fairly loud) whirring noise from behind the right headlight.

I'm used to all of the "normal" sounds you get after shutting the car down - fans, etc. This was very different. It's very clearly coming from behind the front right light, and it's a whirring - prominent enough that it sounds like it's making the case of the light vibrate.

To replicate it, I simply lock OR unlock the car. It makes the noise for about 5 seconds and then stops - makes a quick winding down kind of noise, like when an electric motor stops spinning.

Strangest thing - but I'm very tuned into my cars, so I know it's a "new" sound and not something ever there before. I've done a bit of searching and came across some similar discussion about F10's doing what seems to sound similar in nature, but no conclusions on what it is/was in those threads.

Has anyone here experienced this or have clue what it can be? I'm wondering if it may also be associated with a software update that's now turning on/off a component there as part of the car's wake-up / go-to-sleep process as it's unlocked/locked.

Just deciding whether I should turn around and bring it back in or let it go for now and see what happens.