Hi, I have 1999 Lexus rx300 all wheel drive I was driving it and just braked in place and stop moving i shift it to reverse won't move forward or backward so I put on neutral to push it off the road and won't move back as well only can push it forward, need help diagnose the problem, thanks.

check for a broken cv axle joint, and pray it's not a shot transmission or transfer case (though it probably is.) Good Luck