2021 FORD F-350 SD Complaints

The Diesel Emission Fluid Injectors are becoming clogged due to crystalized DEF. This causes a DEF error to be generated which de-rates the vehicles speed over time from 50mph to 5 mph over a range of ~50 miles. In remote areas with desert, like where I live this can cause you to be limited to 5 mph on an 80 mph fwy which is incredibly dangerous, especially when some of the more remote fwys are 1-2 lane with limited emergency lanes for nearly 100 miles (especially over bridges). My understanding is this speed limitation is not due to the mechanical operation but is a manufacturer software introduced fault condition, which cannot be bypassed. This also appears to be a wide spread issue as my truck has been sitting in the Ford dealership lot for 2 months waiting for a new injector as these are nationally out of stock. Ford has changed the design on 2023-2024 trucks, the new parts are not forward and backward compatible. Was the design change due to reliability issues with their previous design, should there be a recall for existing customers. P.S. I have a 2021 F350 with less than 15000 miles.

1st when the truck is running it has 14.7v from cigarette lighter, and I had an app that reported over voltage since day one and have to replace the battery every 6-8 months. 2nd less than 60,000 miles had issues with drive train (could be something else as I’m not mechanical) and it went after the 60,000 miles because they said it was a computer issue. They said the issues were unrelated even though they did the same things. I had to wait over 2 months on parts as it was the same issue that GM had as they had the same parts.

The contact owns a 2021 Ford F-350. The contact stated that on several occasions while parked, the vehicle was turned off but remained running. The check engine warning light was illuminated. The vehicle was taken to a dealer where it was diagnosed that there was an electrical short due to condensation going into the fuse box. The vehicle was not repaired. The manufacturer was notified of the failure. The failure mileage was approximately 195,200.

Transmission shifts erratically and sometimes completely doesn’t work. Has left me in traffic with no ability to negotiate vehicle and was almost hit on multiple occasions. There is a recall on vehicles built before 8-20 Kentucky but my vehicle build date is 11-20. The local dealer said nothing they can do until my 11-20 Kentucky build date truck is included. No offer of loaner and truck is NOT SAFE TO DRIVE !!!!! This has left me without.... transportation..... faith in Ford trucks Also. ..... same vehicle has the 7.3 ( Godzilla ). Dead miss in 1 cylinder. Internet information says not common but it has happened on multiple occasions. Stuck lifter which causes loss of oil pressure and scoring of cylinder walls. Local Ford dealership said replace 1 head with remanned parts and new pistons. My F350 has 58000 miles one would think it should last longer than that My thoughts. LEMON LAW Thank you for posting of this message. I have spoken personally with several people who have had the same issues and with similar results. Basically nothing from Ford.

The contact owns a 2021 Ford F-350 equipped with AMP Tires, Tire Line: Terrain Pro A/TP, Tire Size: P35/12/R24, DOT Number: 04N9MATTW. The contact stated that while driving 70 MPH, the vehicle began to shudder. There was no warning light illuminated. As the vibration continued, the contact began to lose control of the vehicle and the vehicle nearly swayed off the road. The contact was able to pull to shoulder of the highway. Upon inspection of the vehicle, the contact's wife discovered a bulge on the center tread of the front driver's side tire. The contact replaced the tire with a spare tire and drove to the residence. However, the same failure occurred on the front passenger's side tire two weeks later. The contact notified the tire shop who had sold him the tires, and a mechanic was sent to his residence to inspect the tires. The mechanic diagnosed that the failure occurred as both tires' belts popped up. The driver's side tire was replaced but the passenger's tire was not replaced. The tire failure mileage was 9,000. The vehicle failure mileage was 34,000.

Turned on wiper and passenger side wiper assembly only moved an inch. Does not clear windshield. Wiper arm assembly failure, striped. Can not safely drive vehicle. Manufacturer Recall Number 22S26. NHTSA Recall Number 22v087I was told by the dealership that parts are still not available.

The contact owns a 2021 Ford F-350. The contact received notification of NHTSA Campaign Number: 21V536000 (Power Train) however, the part to do the recall repair was not yet available. The local dealer was contacted. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was made aware of the issue. The contact had not experienced a failure. Parts distribution disconnect.

The contact owns a 2021 Ford F-350. The contact received notification of NHTSA Campaign Number: 22V250000 (Visibility) however, the part to do the recall repair was not yet available. The contact stated while driving approximately 30 MPH while it was sleeting, the windshield wipers were engaged on intermittent speed mode; however, the passenger’s side wiper blade stopped functioning. There were no warning lights illuminated. An unknown local dealer was contacted. The vehicle was not diagnosed or repaired. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was notified of the failure and informed the contact that the parts were on a national back order. The failure mileage was approximately 22,000. Parts distribution disconnect.

The cable connecting the engine block heater caught on fire near the plug. My right hand, thumb and index finger were burned while disconnecting the cable. I was able to stop fire from consuming the vehicle. How ever cable is burned near the 3 pronged connector.

While driving on a road with moderate potholes at about 45 miles per hour the steering wheel and front end stared violently shaking and did not stop until i came to a stop. I took it to the local ford dealership (Cavender Ford) and the service manager said it is a known issue and there is not a real solution for it. Apparently upon research it has been a known issue called Death Wobble. If I had been on a curve, in traffic or in bad weather there would have most certainly been an accident. I was referred to another Ford dealership 90 miles away to see if their more experienced technicians could fix the problem.