Update on my 2011 Explorer Limited with 77k miles (had warranty up to 75k)...dealer (Herb Chambers Ford in Braintree, MA) had to tear down the engine ($700) to diagnose the issue. The have said they need to replace the water pump, thermostat, timing covers on gaskets, and reset the timing chain ($2400). They have also said the transmission PTU is leaking and needs to be replaced ($1850). Total repair cost is just shy of $5000. Dealer reached out to Ford for some relief, but they, of course, said no. I asked the dealer if they would be interested in buying back the car and was given a low ball offer of $9000 even though they currently have similar '11 Explorers on their lot selling for $18-19k. I am planning on reaching out to a local repair shop to see if I am better off getting car towed there to get repairs. Needless to say, I am quite frustrated by the whole experience with the dealer and Ford.