ZZ, once your vehicle is brought in for service, as you know, the inspection is made to see if there are any potential violations. When I take my vehicle in for service (when it was under warranty) every mod is pointed out, and it is notated on the service work order. It, at that point, is in writing - if the vehicle's problem is warranty related, and the dealer fixes the issue, it's a done deal. Also note that all contracts are not issued by Ford, but if it was, you MUST speak with the finance mgr to go over the details of your contract at the dealership where you purchased the vehicle. What addendum will you receive when you say "get it in writing"? The addendum is the completed service work orders.