I've driven in snow and/or ice probably 15 times in my life, all with a two wheel drive with an open diff. Never had issue. I'm planning a trip to Tennessee in two weeks and there is some snow in the forecast. I've used the hell out of the 4wd in my Canyon, but never used the 4wd auto. I guess my question is.....if I run into a snowy, icy patch on the highway, how far can I safely drive in 4wd auto if I feel the need for the additional safety factor? I'm running Geolandar AT's that are in great shape, so I may not even have the need for 4wd. I've never driven in the hills and mountains in snow or ice and just want to prepare myself.