Hi
Have an 01 ls430 and it started to make an ugly whine under hood. Took a video...Not sure what is the issue... Could anyone try to diagnose by watching video? Sure would like an idea before bringing it to shop.

https://www.youtube.com/watch?v=c9gR9vlqUjc&feature=youtube_gdata_player

Thanks kevin

Mine did the same, it was the alternator.

Hi
How hard is it to replace myself? Any step by steps online?

Thanks kev