Home · 2021 Ford F-150 Supercab Diesel · Complaints

What 937 owners told NHTSA about the 2021 Ford F-150 Supercab Diesel

These are the actual owner complaints behind this car’s reliability verdict, filed with the federal government, unedited. They’re unverified reports, not confirmed defects: read them as leads for your pre-purchase inspection, not a diagnosis.

All (937)Crash / fire / injury (19)Transmission & drivetrain (284)Visibility & wipers (130)Electrical system (123)Lights (98)Engine (79)Fuel system (71)Brakes (61)Backup camera & sensors (42)Driver assistance (40)Steering (36)

40 of 937 complaints match · Driver assistance · clear filters · page 2 of 2

Oct 23, 2023Speed controlDriver assistanceCrash

After braking to enter drive way. The truck accelerated spontaneously causing vehicle to hit a wall. Similarly on previous occasions the truck has lurched forward when releasing the brake after coming to a complete stop at red lights or stop signs.

NHTSA ODI 11551289

Oct 20, 2023Driver assistance

Collision avoidance , headlight bright/dim , lane departure system not working. I’m for service five times over five weeks with no resolutions there may be others I don’t know about until I need them the dealer is Fred Grande of Richmond michigan

NHTSA ODI 11550958

Oct 4, 2023BrakesDriver assistance

On 3 occasions the emergency break applied itself while vehicle still moving and all of them was parking the vehicle but not got to fully stop when e brake applied itself. Also took it to the dealer nut they didn't find anything wrong with the vehicle

NHTSA ODI 11548229

Sep 8, 2023Lane DepartureDriver assistance

The vehicle no longer sends signal when blind spot monitors are triggered front parking camera access not available rear view mirrors do not have blinker lights or original camera working

NHTSA ODI 11543414

Jul 5, 2023Speed controlDriver assistance

With the cruise control set to a speed of around 60mph and with no other vehicles around, the truck accelerates (uncommanded) to some value over 71mph. This occurs randomly but is repeatable and has only started occurring within the past week. A definite safety concern.

NHTSA ODI 11530398

Feb 18, 2023BrakesDriver assistanceCrash

This is a link to the Dashcam footage. Traveling 45mph in stop and go traffic. I braked (indicated by my hood dipping downwards) but failed to stop. Possible defect? Haven't had my truck back since the accident on 6/24/2022. https://youtu.be/HL7Iau0463I

NHTSA ODI 11508016

Feb 16, 2023BrakesDriver assistance

When traveling on a divided highway in the left lane with no vehicle ahead of me, as I am passing a vehicle in the right lane, just when I am about even with that vehicle beside me my truck applies the brakes firmly and unexpectedly. There is no associated warning message on the instrument panel display or audio alert like there is when it goes into collision avoidance. When it happened the first time I was very startled and worried it saw something that required braking but as it happens almost every time I pass someone I am getting used to it.

NHTSA ODI 11507617

Nov 5, 2022Transmission & drivetrainDriver assistance

On certain occasions, the transmission will make a banging noise while causing the truck to jerk forward when the vehicle has to upshift such as taking off from an intersection but rarely jerks when the vehicle is downshifting. Also, while using the adaptive cruise control system, the vehicle will travel close to the right or middle lane as if it is looking for the pavement striping and then move back over to the center of the lane. With the adaptive cruise system, when the vehicle is supposed to be in the center of the lane, the system slightly turns the the wheel as if it is having trouble staying in the center of the lane. The vehicle also has a CSP for unintended tailgate opening. i have an appointment set for November 18th but have been trying to get in touch with the service advisor that was assigned to me multiple times and was told he would receive an email to contact me each time but he has not contacted me. The shifting/jerking problem has occurred only three times and the issue with the adaptive cruise system is every time it is turned on while traveling a multi lane highway that has a broken striped line on both sides of the vehicle. Since this is my only vehicle, if the vehicle has to be kept at the dealer, I would need a loaner vehicle to travel to and from work while my vehicle is being repaired. I only use my truck on paved roads. Date is most recent incident of transmission issue.

NHTSA ODI 11492452

Jul 22, 2022BrakesDriver assistance

I was driving with my wife and our one month old baby on I-25 in Albuquerque on a hot day (truck screen indicated 106 F) when suddenly the AdvanceTrac traction control, forward pre-collision braking, adaptive cruise control, and ABS system warnings all came on the dashboard. At the same time the brake pedal went limp (no braking action for the first ~50% of the pedal press). I slowed the truck by coasting for over a mile and picked an off-ramp that I expected to be empty before getting off the highway. Upon exiting the highway, I pressed the brake pedal all the way down and at 90-95% of the pedal compression the brakes finally engaged but locked up the rear wheels leading us to skip and skid across two lanes. We were able to come to a stop in the middle of the ramp and then gently moved over to the side of the exit, again locking up the rear wheels when we came to a stop. Upon turning the truck off and turning it back on again everything went back to normal suggesting that it was some subsystem that caused the electronic brake booster and ABS to become unresponsive. After a week at the local Ford dealer, the service technicians were able to find the error code C05CF. This error code appears to be officially only triggered by "Brake Master Cylinder Piston Position Sensor "B" -This DTC sets due to incomplete or improper module programming procedures." Which suggests this problem may have been lingering for over 30k miles of use. Ford technicians updated the traction control module firmware, body control module firmware, and then reproduced the issue leading them to perform an ABS system calibration which they claim fixed the issue. It is claimed that no component replacement was necessary, only software updates and calibration. Full dealer notes attached as .pdf It's crazy to think a software bug caused our brake system to almost entirely fail on the highway, particularly with an error code that should only have been able to been generated at the factory.

NHTSA ODI 11475348

Jul 7, 2022AirbagsDriver assistanceCrash1 injury

On June 17, 2022 while driving to work on highway in Nee York Stare, I put the adaptive cruise control on so I could adjust my drivers side rear view mirror. The truck suddenly lunged to the left striking a guard rail and overturned several times. Despite being a direct high speed impact to the guard rail and overturning , the steering airbag did not deploy. See police report attached. Due to this , I sustained major internal tissue damage including: a broken sternum, punctured lung bruised aorta, 4 fractures to the vertebrae in both my upper and lower spine and 4 broken ribs in my upper rib cage. I spent a total of 11 nights in the hospital including 4 nights in the ICU. I have not been cleared to return to work and instill under medical care. I understand there was a airbag/steering column recall on other F150s but I strongly suspect that the reveal needs to be expanded to mite vehicles such as mine. All the Doctors that treated me said my injuries were the direct result of the steering wheel airbag not deploying. The state trooper that reined me from my vehicle , as well as one of the witnesses both told me that my steering airbag did not deeply. I also have pictures as well.

NHTSA ODI 11472690

Jan 31, 2022BrakesDriver assistance

1) Pre-collision assist not available---- when starting after vehicle has been sitting off for one hour. Service AvanceTrac----when starting after vehicle has been sitting off for one hour. Hill start assist not available-----when starting after vehicle has been sitting off for one hour. Check brake system-------when starting after vehicle has been sitting off for one hour. All these warnings appear when starting the engine after vehicle has been sitting off for one hour. Yes, it is available. 2) I don't know if I restart the vehicle and warnings do not reappear if the components at fault still work. 3) Don't think it was reproduced. Showed dealer photos of warnings displayed on my dash. Dealer said no fix currently available. 4) No 5) All these warnings appear on the dash when starting the engine after vehicle has been sitting off for one hour. First appeared after starting on multiple occasions.

NHTSA ODI 11449636

Oct 25, 2021Lane DepartureBackup camera & sensorsDriver assistance

1. The passenger and drivers side modules were replaced by the dealership but the issues still persist and are available for inspection upon request. 2. Safety could be at risk. Reverse Brake Assist error issue could potentially cause a small child or person to be in danger if sensors are not working or cause an accident. 3. It has been reproduced and verified by the dealer. The dealer is Sill-Terhar Motors in Broomfield, CO. 4. The passenger and drivers side rear modules were replaced by the dealership, but the issues still persist. 5. The system failure messages did appear at the time of failure. They started appearing approximately a week after we purchased the truck. First warning is logged in the FordPass app on June 13, 2021 I get three warnings pretty consistently when the system fails. So far the FordPass app has over100 error messages regarding my issue. The warning messages all show up at the same time. They are usually: 1. Blind Spot System Fault 2. Cross Traffic System Fault 3. Reverse Brake Assist Not Available See Manual (even though it IS turned on) 4. Hill Start Assist Error occurs as well 5. Sometimes when I am in reverse and these go off and I then brake with the foot pedal, the electronic emergency brake engaged without any manual intervention. First 3 errors have happened while reversing AND while driving in normal city street and highway speeds. Taking into the dealer to have it looked at again on Nov. 4, 2021. Issues started 06/13/2021 and continue to present (as of this writing 10/25/2021).

NHTSA ODI 11438094

Oct 14, 2021Driver assistance

Driving down a steep mountain road when a passing vehicle tripped the pre collision alarm while vehicle was being braked. The ABS, Traction Control, Brake, and just about all other visual alarms went off and the vehicle lost the brakes. the emergency brake would come on and lock up the rear tires then release rendering the vehicle unable to stop going down the steep road. Vehicle came close to crashing into other vehicles multiple times while trying to come to a stop. Vehicle was brought to a Ford dealership where the issue was verified. Dealer noted no recalls or TSB's on this vehicle. Dealer cleared the faults and test drove the vehicle and said the issue is now gone. Vehicle was in the process of being driven home when another vehicle in front slowed and tripped the pre collision sensor again and again all alarms came on and the brakes were lost. The vehicle in front was almost collided with. Contacted Ford customer service to report the issue. Ford cs said to tow the vehicle to an authorized ford dealership and call back to open a case file. Vehicle is currently at a Ford dealership awaiting service.

NHTSA ODI 11436751

May 31, 2021Electrical systemBrakesDriver assistance

Antilock brake fault Hill start assist warning Pre collision assist not available

NHTSA ODI 11419125

Feb 16, 2021Backup camera & sensorsDriver assistance

TRUCK DOES NOT DETECT SPECIFICALLY SILVER FORD CARS WHEN AUTO PARKING. IT WILL TRY TO PARK IN THE SAME SPOT AS THEM ON SUNNY DAYS.

NHTSA ODI 11396450

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Working with the data? Download all 937 complaints as CSV · fetched from NHTSA July 19, 2026

How to use these: a complaint is one owner’s report, filed voluntarily and published unverified. Patterns matter more than any single story. If several owners describe the same failure at similar mileage, put that system at the top of your pre-purchase inspection list. Back to the full 2021 Ford F-150 Supercab Diesel verdict →