Got a 4x4 problem that I need some advice on. I own a 2006 f150 crew cab, with 5.4 with 4x4 switch on the dash. Today I used 4x4 in the snow. 4x4 light on dash came on and it worked perfectly. No more than 5 minutes later I used it again, but this time no lights or 4x4. Checked all fuses, good. Switched it back and forth, and no good. Tried everything but no good. Got truck into garage and tried it again and it worked. Turned it off and back on and nothing again. Any ideas where to start looking?