Key Fob

[68PowerWagon]

I have always been told that with the key fob you cannot lock your keys in the vehicle. Mine has done this twice. The battery still seems fine as I can lock it & start it from 25 yards.

 

[2003F350]

I want to say that you can't (or rather, it's harder to) lock the doors with the fob inside if you have push-button ignition, as the truck will attempt to unlock itself because it realizes the fob is inside. If you have to stick the fob in to start the truck then yes, you can lock the fob inside.