The ignition lock cylinder on a Ford Ranger is where you put your key when you start the truck. Over time, this lock cylinder can jam up, or just lose contact with the other electronics. When it does that, you won't be able to start the truck until it gets fixed. Fortunately, it's not very difficult to remove the lock cylinder, and it can be done in under five minutes.
Pop the bonnet on the Ranger. Locate the battery on the right side of the engine compartment. Disconnect the negative terminal on the battery using an open-end wrench.
Put the key in the ignition and turn it to the "lock" position. Look underneath the steering column and find a small hole in between two screws on the right hand side of the Ranger's column trim.
Insert a punch into the hole and push it up while simultaneously pulling out the Ranger's lock cylinder. Pull the key and cylinder out as one assembly.