mine was acting up a few weeks ago but i had dash lights but when i went to start it, it wouldnt do anything justacted like a dead battery but after working on it for a few min i found that it had the factory battry in it and it is 6 years old but that wasnt the real problem the real problem was that the stater soilonoid on the firewall was bad replaced it and havent had a problem since
another thing it could be you gim module but if it goes if it wont start again tewll you replace it and that is a ford dealer item