My truck is a 2007 F-350 DRW.
I'm not sure when,because I don't use it much in Texas,but…
My Four Wheel Indicator lights on the dash quit working.
I don't see them in the dash at startup either.
I'm not sure if the four wheel drive is coming on at all.
There is probably a way to check that without driving
off into a mud bog,right?
Anyway I have looked for blown fuses etc, no luck yet.
(15amp#33 under dash and 30amp#3 under hood)
These are according to my manual.
So…. If someone out there has some ideas or suggestions…
I would appreciate it……
Thanks…Charlie

 

If you or someone near you has Auto Enginuity (AE), you can actuate the 4x4 light with it as a test.

 

You can put it in 4WD and take it for a stroll. When in 4WD you can feel the binding when you turn. Or you could climb under there and see if your front drive shaft can be spun by hand while in 4WD, if it spins it's not working, if it wont', it is.