After moving from San Diego to Tempe, my 2006 C class had a message about the coolant. Called Star Service and they looked at my car, found it wasn't the coolant but the fan behind the air. Si explained to me that unfortunately the part couldn't be cheaper (I appreciated that he mentioned cost, as most mechanics don't, and recognized that I would want the best, cheapest part when available) but that it would be done that afternoon. I appreciate the hard work the shop put into my car, thanks guys!