My temp sensor went out for the s/c right after I bought the roadster. The dealer had my car for a week. Fortunitely at that time, the service mgr and I were close friends. We replaced the pump, but it still did it, and the sensor was bad. But at least we all took our time to figure it out. All paid under warranty. I told him then, if this happens once the warranty is out, I am dead. He has since moved on, but you could at least reason with him. Not the service writers today, or the service mgr's. My dealer has a female service mgr with zero mechanical experience. Customer service yes, but no mechanical...so at least I will get a smile when I get screwed...I dont' think so....lol