A follow up on a co problem, that happened on 7/7/15. dealer took the explorer in on the co issue along with ford knowing of it. gave us a rental for a week, and came up with no co levels after a week. went to the dealership to take a ride with the service manager, exhaust was present but he said it was a hot engine smell. no levels where found but symptoms in my body of co where indicated while the service manager was in the vehicle. left the vehicle for the day and was told by ford the service manager found nothing wrong and to come get the vehicle. upon the ride home my co detector indicated levels at 534ppm. with the windows down and the sun roof open at 70mph. along the way i stopped in the local hospital, waited an hour in a half for blood work then walked out. had to get back to work. only 15 minutes back home the levels went up to 871ppm. calling the dealership and ford in the am to get this problem solved asap before some dies. 2015 with only 4,500 miles. ford has known of this problem since 2011. updated 12/05/17*cn