Tl* the contact owns a 2011 ford expedition. the contact stated that while driving approximately 40 mph the rear wheels locked momentarily. the failure continued to recur on an intermittent basis. the vehicle also stalled during one of the failures. the contact also stated that the vehicle was a rental and was towed back to the rental agency after stalling. the contact was not aware if the vehicle was ever taken to have the failure diagnosed or repaired. the failure mileage was 7,000. the vin was unavailable.