I have a 2004 Ford F250 Superduty V8 Turbo Deisel. I attempted to put it into 4WD (due to snow) and nothing happened and no indicator light came on. I followed what I usually do by turning the control knob from 2WD to 4WD High while the truck is in motion and I saw no light come on and it didnt even feel that the 4WD was engaged. I'm assuming that a burnt light bulb would have nothing to do with the 4WD not engaging correct? What could be the problem?

Hi again nasenterpris
Lets start at the shift on the fly solenoid, on the right inner fender near the battery make sure
the connections are clean tight, check the lt blue/pink for pwr to the solenoid also check all
the transfer case connections it's common for wires to get knocked off in the snow just when
you don't need them. I'm gonna guess you have the basic OBDII scanner like mine at home
many of these scanners won't read codes for ABS or transmission and 4wd. I pulled up the wiring diagram for your truck and it seems all things 4wd run through the 4wd control module.
The most you'll be able to do without the proper test eqipment is check for bad connections
and test for pwr in power out at each switch and relay. If you can't find any obvious problems
I would take it to someone that can diagnose it standing up where it's warm.

Good luck
todytwo Hi again nasenterpris Lets start at the shift on the fly solenoid, on the right inner fender near the battery make sure the connections are clean tight, check the lt blue/pink for pwr to the solenoid also check all the transfer case connections it's common for wires to get knocked off in the snow just when you don't need them. I'm gonna guess you have the basic OBDII scanner like mine at home many of these scanners won't read codes for ABS or transmission and 4wd. I pulled up the wiring diagram for your truck and it seems all things 4wd run through the 4wd control module. The most you'll be able to do without the proper test eqipment is check for bad connections and test for pwr in power out at each switch and relay. If you can't find any obvious problems I would take it to someone that can diagnose it standing up where it's warm. Good luck todytwo