If the failure happened before the warranty expired, they should cover it for you under warranty. The tow to the shop should not count in the miles. Ask to talk to the service manager. If the service manager is sceptable, ask him to please review it with his rep. Don't piss off the service manager. He is your best source for help at this time. You can even suggest to him that "you have to be on my side on this" when he aproaches Ford. Let us know what happens.