Hello, in December I purchased a new 2011 RAV4 4WD 4 cylinder Engine and today was the first time I took it out in the snow. We got about 4" of snow on the roads this morning and I had to bring my daughter to the bus stop and the RAV4 did not go to well in the snow. The vehicle appeared to be slipping and sliding on our street though our development at a fairly low speed. Correct me if I am wrong here but isn't the RAV4 4 wheel drive automatically go from mostly 2 wheel drive to 4 wheel drive when needed? It just so happens we were invited to a customer appreciation night at the Toyota Dealer and we spoke to the service manager about this slipping and sliding issue and he seemed a bit surprised. So he asked one of his service reps to show me how the 4 wheel drive works. The rep kept mentioning about having to be stopped in neutral to put it in 4 wheel drive and he pressed the button on the dash that would lock the center differential? He was driving my car with a manual in one hand trying to explain how the 4 wheel drive works. When I got home I read the manual and it appears that pressing this button locked all the wheels together by locking the center differential? I also, read that this was only good up to a low speed and this mode would automatically disengage at a low speed. Should you really have to stop and push this button when you get 3 - 4 inches of snow and you just don't want to slip and slide? I was thinking you would use this mode if you really got stuck and not for every time you get 3 - 4 inches of snow. Could it be that the Toyo tires that came on the RAV are just not to good in the snow? The RAV4 has Toyo A20 Open Country Tires with the 17" rims. Are these tires not so good in the snow? Could someone explain how my 4 wheel drive is suppose to work? Thanks for all your help.