long high pitched beep noise after turning car off

[ryank382]

Hey guys, i feel like ive been posting a lot lately but i really have a lot of questions. Everytime i turn my car off i hear a long about 6 or 7 second high pitched beep coming from the car. its not that loud but its just loud enough to notice.idk where from exactly but it sounds like its from the engine. im kinda paranoid about it and wante to kno if this happens to anyone else or if its normal. thanks ahead of time

[Greg Nelson]

Can you post a video w/sound to give us an idea?

[AudiAnnie]

Hey guys, i feel like ive been posting a lot lately but i really have a lot of questions. Everytime i turn my car off i hear a long about 6 or 7 second high pitched beep coming from the car. its not that loud but its just loud enough to notice.idk where from exactly but it sounds like its from the engine. im kinda paranoid about it and wanted to know if this happens to anyone else or if its normal. thanks ahead of time

Does the sound fade away as the interior light dims? Could be a power regulator for some interior lighting.
Other than that, there are quite a few electronic modules which go through various shutdown sequences after you turn off the ignition, and they could emit audible whines. Although we tend to think of solid-state electronics as operating silently, there are many types of components, especially switch-mode power controllers, which are quite audible.
Bottom line: No warning messages, no worries.

[neptunesfinest]

I think I know what you're talking about. It's coming from the headlights.

[ryank382]

Does the sound fade away as the interior light dims? Could be a power regulator for some interior lighting.
Other than that, there are quite a few electronic modules which go through various shutdown sequences after you turn off the ignition, and they could emit audible whines. Although we tend to think of solid-state electronics as operating silently, there are many types of components, especially switch-mode power controllers, which are quite audible.
Bottom line: No warning messages, no worries.

no the interior lights are still on when the sound goes away. but i guess what you said makes sense. its just odd. heres a video. its a little hard to hear so u gotta turn the volume up a little high
http://www.youtube.com/watch?v=vyvZAoAF49k

[AudiAnnie]

heres a video. its a little hard to hear so u gotta turn the volume up a little high
http://www.youtube.com/watch?v=vyvZAoAF49k

Yes, that's exactly the sound that a power controller makes. Can't tell you which one, though, since there are quite a few in the car.

My TT makes a louder sound after I park it, which sounds like a small motor running (but not a fan). Both of our Audis also have a servo motor at the back of the car, which cycles when we open the driver's door in the morning. I have no idea what that is, either. So many devices, motors and gadgets in these cars!

[ryank382]

awesome good then i dont hve to worry about it. thanks