Two problems related to battery dead have been reported for the 2011 Ford F-150. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2011 Ford F-150 based on all problems reported for the 2011 F-150.
The contact owns a 2011 Ford F-150. The contact stated while driving approximately 35-40 mph, the hazard lights independently activated, the doors failed to unlock, and the windows failed to adjust as desired. The contact stated that the battery had failed. The contact disconnected the battery to stop the hazard lights from draining the battery. The contact stated that the other failures persisted. The vehicle was diagnosed by an independent mechanic who informed the contact that the body control module needed to be replaced. The vehicle was not repaired. The manufacturer was made aware of the failure. The approximate failure mileage was 208,000.
I was driving on the highway, in the right lane, doing about 60 mph. For some unknown reason, the truck simply shut off and lost all power. I coasted to the shoulder and waited a minute or so to calm down and decide what to do. I then tried to restart the truck, and it started right up. I nervously drove the rest of the 25 miles or so to my home without incident. The truck also seemed to run fine for the next couple of days until I could get it into the dealership to have it looked at. The dealer determined that the battery was bad (only 2+ years old) and replaced it under warranty. It seems odd to me that the battery was the problem, since the truck restarted easily and ran well for the next few days. However, the new battery does seem to have cured the problem as it hasn't repeated the traveling shut down. I am cautious and nervous now about driving over it for fear it might shut off again. It is actually similar to what the gm cobalt owners experienced, although this does not appear to be ignition related. I have written to Ford to see if they would confirm what the dealer told me - that a weak battery could cause a vehicle to quit while running. I am hoping that by documenting this incident, I will find out if other owners of newer f150s have had similar full speed shut downs. I'm trying to decide whether to keep the truck or sell it because I still don't trust it.