Dood. No problem. You were just trying to help, and I am a Noob in here.

I did mention in the first post it was the cooling fan, heck it's in the thread title. I know what the fan sounds like, but it it much louder than anytime before, because it's running so hard and fast. When I turn the A/C off the fan will calm down (takes about a minute for the fan to turn off).

It's very hard to diagnose something like this online. It's not cooling very well, either. It started at J/L because they were the ones that told me it was low (to sell me an A/C recharge, no doubt). But they also told me my battery was shot and to take it back where I bought it. And it was shot, so I believed them about the A/C. I can't really blame them for anything except planting the seed that something was wrong with the A/C, which now there is. Unfortunately. Who knows, had I had them do the re-charge, it might have been fine.

Like you said in your first response, it may have something to do with the electronics, something is telling the fan to run and run so fast.

I'm indifferent about the dealership. I haven't had but 1 other problem with the camshaft sensor, so I don't have lots of experience outside of oil changes, and they have been good. There's so many shady-looking A/C and auto repair shops in Tampa, which to me could end worse than going to a dealership. Drive in in a XF and dollar signs roll over their eyes. It's all M/B you know.

I might take it to this M/B repair shop. The Dealership guy was good, but mentioned twice how expensive XF parts are (setting the stage). To be continued, but will never try A/C stuff on my own again.