my car does that too. i live in iowa, its not really getting cold enough here to make it whine but when i was parking it outside every night and it was goin single digit temp it would whine until engine started to warm up a lil bit. i read a post a while back but i dont remember what that whine was about, i remember reading it and saying ok i dont have to worry about taking it in...sorry i cant help much more on the topic, will search around though.