Four Wheel Drive Low for a 1999 Ford Explorer with 183346 mi

The best thing I can tell you to do is block your wheels put the truck in neutral put hte 4x4 slector in auto go under the truck with a small hammer and very lighty tap on the motor at the back of the tranfercase. DON'T GET CARRIED AWAY with the hammer. At times they get stuck if there not used a lot. If you strike it too hard you may damage the motor. The only other cause is you may hve burned up a gem moduel which controles a lot of the electrial fuctions on this truck. But do that first if the light goes out the you can go back to park if you want ingage and disengage several time to get every thing loosened up again hope this helps BE SAFE (NOS )