I have a 09 f-450 and it has been causing me lots of problems . But my biggest problem was yesterday while driving down the road the truck quit started flashing all the dash lights and locking and unlocking the doors . I have tried several things and can not seam to get it fixed . I need some help . Thanks JUSTIN

 

First thing I do when electrical problems start is make sure the batteries are good, then check all the body mount grounds.

 

batterys are less than than 6 months old . Ran my scanner on it and cleared all code and still flashes the anti theft light and wont do any thing . Called local ford and they said have never seen one do that I needed to bring it in for them to look at .

 

I might disconnect the batteries for a couple of hours, see what happens. Sounds like a issue with the anti theft thingy.
Can't help past that, sorry, might still look for loose grounds.

 

Think i found the problem by accident . Was checking all the plugs to make sure they was connected tight and bumped the plugs behind the air box that connect to the ecu . Truck then started . So i grabed the plug again . The truck died and went in to lock down again . So in the process of taking the plug apart and checking all the wires to see if there is a busted terminal or pinched wire in the harness .

 

Electrical issues, I bet most are fixed by accident.