Very annoying, bought vehicle new...first winter 4x4 transfer was great; in fact, sometimes I was the only vehicle in the neighborhood out in the snow...Last winter, and now again, this year, the transfer from 2WD to 4WD does not engage and I am stuck if it snows more than 4 inches...I now have over 40,000 miles on this vehicle and hopefully this item is a "warranty" item...I will can dealership to find out...