If you have a Japanese car - take it to Andy at Green Light Auto in Irvine. Andy is from Japan and is a certified Japanese car mechanic. He will tell you things the dealer will not and is the most honest car mechanic I have ever met. When my daughter's car had a battery problem and the dealer said it was the alternator, Andy proved them wrong (and saved me a bundle) by replacing an $18 cable. This type of thing has happened numerous times at Green Light Auto.. They are the best!