Originally Posted by alfsr78
I was having a problem with my locks and was ready to pull the cylinders and replace them in my f-150. I had broken the fob remote and was left only with the keys. It is a 1998 so dealer no longer has codes. Called a locksmith and they said bring it by and they would see if they could decode the keys. The came out and sprayed the drivers door with some stuff and it opened right up. I bought a can, now the key unlocks both doors and the tail gate which before would not work at all. The stuff is called CorrosionX. Cost me just over 10 bucks, but better than 75 and me doing all that labor. Hope this helps.
I use 3in1. But that's not the issue. Mines a 2010. I've checked all the fuses, continuity checked the doors wiring harness with no results. It's a real pain in the ***.