I'm driving 2012 Sienna LE AWD. We had what I would call a light snowfall last night - about 1.5". New all season tires with very good snow and wet traction ratings. The absolute WORST vehicle I have ever driven in the snow (50+ years experience). When does the AWD work? It NEVER even kicked in. What is with the entire drive train shutting down when the traction control kicks in? Felt like I lost all control of the vehicle! Thankfully there was no traffic when I pulled onto the road. Overall a horrifying experience.