Sorry, I'm posting this late. I think I posted on your other thread regarding the fuel system.
I'm getting real concerned with these companies that charge you a lot ($264) to "check and advise" you on problems that you are having, when during part of the so called "check" there should be discovery about what the culprit really is. It sounds like they are just throwing parts at it, and that really sucks!
Don't know the dealer you have, but my experience with the dealer in the Kansas City area, was horrible! Charging me for "checking it out" and spent all of 20 minutes and claiming it was an A/C expansion valve and that it and all the lines going to it needed to be replaced! Of course during all of this replacement, they would end up replacing the o-ring that was the real problem! I didn't have them do the work and waited until I got to a dealer I could trust. I actually stood there while he was working on it, and we had a great conversation.
This is an ideal place to have one of those "investigative reporters" do something on these dealers. Way too easy for them to actually fix the issue, while they are replacing all the unneeded expensive parts, just to be able to charge their labor rates.
After my Kansas issue, I now ask what they are going to check and in what order to solve my problem. Through this forum we get enough suggestions as to what the problem might be, that we can dictate to them what to check for. The only "tool" that was used in Kansas to check my problem was a flashlight, so they could see where the leak was.
These are high profit centers for these dealers, and the bs that is shoveled gets pretty high sometimes. We sometimes need to just say, no way!
I hope your issues are done after you get it back.