Took my SL450 to a dealer for a rattle in the driver's door and window malfunction. Got the typical rip off/run around. Spent most of the day for them to investigate and they told me a bolt or screw had fallen out somewhere in the door affecting the window track. They could fix the window problem immediately for $500 if I didn't mind leaving the lost screw somewhere in the drivers door or $1000 if they took the time to find the bolt or screw. Took it to Ralph at A&R and he was pleasant, polite, and took the time to listen to my explanation of the problem. Said give a little time to investigate, got into the door quickly, and had the problem solved within an hour. He also reconnected the antenna that speaks to the key fob that was disconnected at the dealership in their investigation. And he clearly explained what was wrong in the first place. Suffice it to say it wasn't a lost bolt or screw. And to top it off, it was considerably less than the dealer, Duh. Everything now works like new and I have complete confidence in my new, full time mechanic, and look forward to working with him whenever I have a problem. Awesome!!!