Hey Guys,

I have a 2010 F250 4x4 crew cab 5.4L. The truck seems to have gone into security or theft mode. When I turn the key ahead the little security lock
icon flashes fast. The truck wont turn over and it doesn't sound like the fuel pump is cutting in. Not sure what could have caused this. Anyone have any ideas ?

 

If you have another key, have you tried that other key?

 

I only have one key unfortunately...