Technical Service Bulletin SSM 51279 — 2021 FORD F-350 SD

Some 2021-2023 F-150, 2021-2022 F-Super Duty, 2021-2023 Ranger customers may have concerns including, but not limited to: no power to the distribution box, rear camera inoperative, rear park assist inoperative, box lights inoperative, power up/down tailgate inoperative, unable to open tailgate by tailgate switch, and no tailgate ajar message when the tailgate is ajar. These concerns may be caused by faulty connections between the pickup bed, tailgate, rear lamp assemblies, or bumper where connectors are disconnected, damaged, or coated with bedliner. Prior to performing any warranty diagnosis or repairs, verify if the vehicle had an aftermarket spray-in-bedliner. Any repairs resulting from aftermarket products/installation, including but not limited to a spray-in bedliner, are not covered under warranty.