I don't know why but i'm having some problems lately with switching from 4wd back to 2wd. You know how on the dash it shows the front wheels blink and then dissapear. It will take a minute sometimes before it stops and your in 2wd again. I've even tried shutting the car off and starting it again and it still is blinking and then just randomly it just switches to 2wd. I plan on taking it to nissan i was just wondering if anyone has had a similar problem. thanks