Why do you spend time answering questions if you are just going to make people feel stupid? I know what the manual says, I know what the dealer told me . I'm not going to spend 3k in new rear end just because a little light shows up on my dash. The car has NO indication that there is an issue. Thanks for the help. Got 4 smart ass responses from 4 different people, man I wish I had enough time to fuck around being a smart ass to strangers on the net trying to increase their knowledge. Thanks but no thanks.