I have a 2003 f 150 with electronic 4X4, the switch is on the dash. It will not shift into 4x4 hi or lo. I have looked for the fuse but am not sure witch one it is. My over drive button has stopped working also. Not sure if they are on the same fuse or not. Can some one tell me where the fuse is.

 

Fuse locations and descriptions are in your owner's manual. If you don't have it, you can download one.

http://www.fleet.ford.com/maintenanc...ls/default.asp

 

Can anyone describe in detail (for me as well as bigdnlouky) how the 4x4 system works in a 2003 F150?? Obviously you turn a **** which sends a signal somewhere to engage the tranfser case and front axle. I have been wondering and this may help others as well---DirtySCREW

 

Ford Diagram/ front axle engagement. They have it wrong tho lol. Swap "LB" with "PK" and it's correct.