Ok, I dont know really anything about explorers so this could be a user error. Anyways its a 96 4x4 with the control trac system, it has a switch for 2x4, 4x4 auto and 4x4 low. when I flip the switch nothing happens. and when i drive, it will flash the 4x4 auto and 4x4 low lights a could times and stop. I was in drive while switching it. But i work at a car wash and a newer explorer (01 or newer) came in with the same switch as mine. in drive i flipped the switch and the 4x4 light would come on and i would hear some type of solenoid. So, what could be the problem?