I never really cared for auto-tilt mirrors (had them on my past two cars) and found another reason this past week that made me glad I didn't have them turned on: We had heavy freezing rain, and my mirrors both had about 1/4" of ice on them. One thing that does work well is the heated mirror feature. I turned on the rear defroster and the mirrors melted all the ice off in no time. Problem is, the water ran down and into the housing, then re-froze solid. I had giant icicles hanging down from them. There's no way the glass was going to budge, and I think if they had tried to "auto tilt" when I backed out, it wouldn't have been good for the motors and mechanism in there.