I've been to two dealers, and two non dealer shops, in the past 2 years. Thankfully only the dealer shops charged me, but I'm still about $400 in and back to no cold air. They each get it working again for a few days, but then the green a/c light starts blinking randomly and then shortly thereafter the cold air stops. My trusted mechanic who doesn't do a/c didn't see anything obviously wrong mechanically, and thinks it is probably a hidden leak. I'd really appreciate a referral if you have one in the Western Washington area.