37 problems related to exterior lighting have been reported for the 2013 Ford Flex. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2013 Ford Flex based on all problems reported for the 2013 Flex.
Door ajar warning stays on for drivers door. Begin as intermittent problem resolved by opening and closing the door till the door sensor registered the door closed. Progressively got worse and 7 months later the door ajar light stays on all the time. Interior lights remain on all the time and the auto door locks do not engage when driving. I talked to my local Ford dealer who said it just needs oiled and it will fix the problem. We have oiled it and cleaned it with compressed air and it has done nothing. If Ford can't stand behind this kind of thing, I'll be buying a Hyundai or a Honda next for a better warranty and for a higher quality vehicle.
Driver door sensor failure. Have taken it to the dealer, door is closed and latching, but system doesn't think it is. Unable to lock doors, interior dome lights stay on causing visibility issues at night. Plus annoying dinging alerts in stop and go traffic.