2021 Ford F-350 Sd Electrical Problems

I was driving my truck home when it completely shut off, I lost all power to everything, including the power steering brakes. When I got home, I did some research on the Internet to see possible causes. Apparently there is a service bulletin for the fuse box having water getting into it from the cowl of the hood, which states it can do exactly what happened to my truck? You can also keep your truck running and not shutting off and just to hold host of other safety issues with the service bulletin. . So I brought my truck in to get diagnosed by Ford and they did indeed say it was the fuse box under the hood that got water into it and shorted it out. Ford would not cover this part even though I have a factory extended warranty, annoying this is a common issue for 2020 to 2022 Ford trucks they issued a recall on expeditions in a couple other vehicles, but not Ford trucks specifically the super duties. How is this? OK that they don’t tell a customer who purchased a vehicle that this could potentially happen and then when it happens, they refuse to cover anything even though it’s their fault why it happened.

NHTSA ID

11749077

Incident

Jul 1, 2026

See attached document for complaint.

NHTSA ID

11703738

Incident

Nov 19, 2025

The contact owns a 2021 Ford F-350. The contact stated that while driving 65 MPH, the Disconnect/Reconnect message was displayed on the instrument panel. The contact stated that while depressing the brake pedal with the trailer brake control, the system indicated that there was no trailer detected. An independent mechanic was contacted. The vehicle was taken to an independent mechanic to be diagnosed; however, the diagnostic result was unknown. The contact stated that the fuses, wiring harness, and trailer brake control were replaced. The contact related the failure to NHTSA Campaign Number: 22V193000 (ELECTRICAL SYSTEM); however, the VIN was not included in the recall. The manufacturer was notified of the issue and informed the contact that a mechanic would be sent to inspect the vehicle. The failure mileage was 200,000.

NHTSA ID

11686080

Incident

Sep 2, 2025

Mileage

200,000 mi

Driver door will not lock or unlock.

NHTSA ID

11662287

Incident

Jan 15, 2025

Ford knew there was an issue back in 2021 as they so filed with your agency. Yet waited. Then warranty claims continued. Now, four years later they file as a safety issue, BUT have told me twice in phone calls that I can drive the truck, despite it could shut down on it's own while driving. I tow donated RV trailers to the North Carolina disaster, now I cannot as my dealership advised I not go on long trips. Ford refuses a like loaner, or any loaner at all. This is a Ford issue, not mine nor the dealership and Ford needs to either replace all suspected parts, have a resolution now or proved no charge loaners of like kind to all owners. This approach by Ford is totally unacceptable as they in two phone calls to corporate never once said to not drive the truck and the letter I received said they are not advising we park the truck

NHTSA ID

11636872

Incident

Dec 29, 2024

REAR CENTER HIGH MOUNT CAMERA ON CHMSL HAS STOPPED WORKING AFTER ONE YEAR AFTER PURCHASE

NHTSA ID

11616245

Incident

Sep 24, 2024

On my 21 f350 while towing a 36 foot gooseneck unloaded I noticed a burning wire smell. And I realized I had no more trailer brakes. After diagnosis of the system I found the factory trailer brake controller had melted on the inside. Causing it to loose braking.

NHTSA ID

11597337

Incident

Oct 14, 2023

While driving my 21 F350 my truck would go into limp mode. The climate control stopped working, passenger window stopped, blind spot monitors, along with the mirror. After running forscan it showed every code possible. After an exhaustive search I finally found the main plug under the bed just above the spare tire. The wires inside of the insulation had corroded away to the point it had to be stripped back at least 1/2 inch before getting decent wires that wouldn't crumble when touched. This is a terrible place to put a plug that controls so much.

NHTSA ID

11596800

Incident

Nov 2, 2023

The contact owns a 2021 Ford F-350. The contact stated that the vehicle failed to shut off upon depression of the START/STOP button after several attempts. While driving to the dealer, several warning lights appeared on the instrument panel. The dealer performed a diagnostic test and discovered that the battery junction box was defective due to moisture intrusion. The manufacturer was notified of the failure and informed the contact that there was no recall on the vehicle. The contact was provided a case number. The vehicle was not repaired. The failure mileage was approximately 47,000.

NHTSA ID

11554854

Incident

Sep 10, 2023

Mileage

47,000 mi

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.

NHTSA ID

11538440

Incident

Aug 12, 2023

Mileage

195,200 mi

On 7 Aug 2022, I lost cruise control, Navigation function (GPS0 and had problems with other elecrical functions on instrument cluster. I took truck to my local ford dealer; they rand Ford diagnostics on truck and it had 3 module errors listed. They cleared the codes and tried to get me to accept the vehicle. Road tested it and there efforts of clearing the codes did not fix any thing. Brought back in shop on 10 Aug 2022. Diagnostics ran again now narrowed it down to APIM failing 3 times in 2 days. Now deallership says they have to order part from California if they have them in stock. This truck only has 22,000 miles on it. Has had multiple failures of equipment for fuel system listing codes P0191 2 and threee times per day. Dealer will NOT attempt to fix that problem. Just says deal with it.

NHTSA ID

11478786

Incident

Aug 7, 2022

Check engine light comes on almost everyday. After at least 5 minutes driving, this trucks engine will shut down with out notice. Usually when making a turn or coming to a stop light. When this happens you loose all steering control. You have to shift to neutral and try and restart. This has caused me to almost rearend a highway patrol vehicle. Very dangerous. I have had this vehicle in to the local Ford dealership on numerous occasions; however they will NOT run diagnostics to see what is happening. Have ad independant mechanic and my scan tool run tests and it always shows code P0191 fuel pressure rail faault. Maintenance is always uptodate ad fuel filters changed by dealer every 5,000 miles. Dealer and MF not honoring warrenty.

NHTSA ID

11473541

Incident

Jul 11, 2022