Weird buzzing sounds after locking door or sometimes starting car

[dbansal]

Took the boxster on a 600 mile ride through Upstate NY over the weekend. Everything was fine however, coming back I noticed that sometimes when I would start the car or unlock the doors, a weird buzing sounds (think electrical shock sounds) would come about. It wasn't consistent and I could not replicate it...any ideas?

[edc]

If you turn the ignition without firing the engine and leave it for approx 1 min you will hear the throttle body resetting itself. This gives a high pitch electrical noise with a couple of clicks.