2021 FORD F-150 Electrical System Problems

Was slow rolling to stop light at intersection. Vehicle shut down and got an alert that said “auto start stop shift to P, then restart engine”

Tire pressure sensor keeps coming on and says it is faulty. The driver side window will not completely roll down( we have done a reset and it will only work once or twice). With the radio it will sometimes not work(we have done a soft reset and it will work a few times and then stop). The last thing the heat shield that is underneath the truck had a recall we got it repaired and since it hangs down, we have taken to the dealership and they repaired it again and will still hand down.

The contact owns a 2021 Ford F-150. The contact stated that while his wife was driving at undisclosed speeds, the vehicle turned off and the vehicle decelerated. The vehicle independently automatically restarted; however, the failure recurred. The contact discovered NHTSA Campaign Number: 24V267000 (Electrical System, Power Train) however, neither the year, make, model nor the VIN was included. The dealer was not contacted. The manufacturer was made aware of the failure. The failure mileage was approximately 78,000.

The vehicle will occasionally freeze on the infotainment splash screen. This prevents the rear view camera from activating when the vehicle is in reverse. Furthermore, the vehicle has already been serviced for a prior issue where the infotainment system (and rear view camera video) would momentarily freeze (1-4 seconds) when the camera was activated

The on board generator auxiliary fails to work because of "ground fault". Complaint to dealer (McDonald Ford, Freeland, MI) who stated has been receiving numerous complaints of this failure but has no remedy nor direction from Ford. This has been a continuous problem for the last few months.

OBDii reader which connect to vehicle ECM reads perfectly independently, however when connected to a state emissions inspection machine, machine indicates no vehicle information available and results in failures due to ECM not responsive. Ford says it is a known issue but will not replace ecm unless recall is issued.

F150 is experiencing interior leaking from the windshield and other areas that Ford is unable to identify the cause. This can cause visibility issues and damage to electrical components resulting in a safety issue. The leaking causes the floor mats to be wet, which have also caused my foot to slip off the control petals. This could cause an accident. Ford is not able to identify the source, they were able to reproduce the leaks in the firewall but can't identify the source. Ford doesn't acknowledge this is a major issue and has only offered to caulk and seal in the most common areas. It was in the shop for four days March 25-27 and 22-23 2024. There are no warning issues just went floor mats and visible water on the interior of my windshield which I demonstrate to the dealership.

The contact owns a 2021 Ford F-150. The contact stated that the vehicle failed the emissions test due to a gateway error. The vehicle was taken to an unknown dealer, where it was diagnosed that the gateway module needed to be reprogrammed to the latest software. The vehicle was not repaired. The manufacturer was made aware of the failure and referred the contact to the NHTSA Hotline for assistance. The failure mileage was approximately 95,000.

The contact owns a 2021 Ford F-150. The contact stated that while attempting to start the vehicle, the vehicle failed to start. No warning lights were illuminated. The vehicle was taken to the dealer, who was unable to determine the cause of the failure however, the dealer replaced the battery and battery control module. The vehicle was repaired, but the failure reoccurred. The manufacturer was notified of the failure but referred the contact to the NHTSA Hotline for assistance. The failure mileage was unknown.

When a trailer is connected the right side trailer brake light fails to operate; the lights on the truck work properly. When the trailer has been recently disconnected warnings on the dash appear saying "Blind spot and cross traffic alert deactivated trailer attached". I also get trailer left and right turn lamps fault check lamps warnings and the turn signal indicators flash at double speed. These things always clear up after a couple of days until a trailer has been connected and disconnected again. I have two different trailers and they both do the same thing. Just for the record, the right turn signal and hazard flashers on the trailer work correctly. My dealer has observed everything that I stated above but claims he is unable to get parts to fix it. The cross traffic alert malfunction and the non operative trailer brake light would appear to be safety issues....

The contact owns a 2021 Ford F-150. The contact stated while starting the vehicle, the instrument cluster and the infotainment system reset independently, which affected the trailer blind spot setting while towing a trailer. The vehicle was taken to the local dealer, and to a second dealer, Kenly Ford, Inc. (500 S Gardner Ave, Kenly, NC 27542), to be diagnosed; however, the dealer could not determine the cause of the failure. The vehicle was not repaired. The contact related the failure to Ford Campaign Number: SSM 50975. The manufacturer was notified of the failure, and a case was opened. The failure mileage was approximately 100.

I was stopped at a red light at a busy intersection in an Atlanta suburb. I was several cars back from the red light. I saw the light turn green so I took my foot off of the brakes to engage auto start and barely tapped the gas and the truck dinged and showed me an error on the screen. I was so mortified and my heart started racing that I could barely read the error, all I remember seeing was "Shift to P." However, I tried to shift to Park and the shifter wouldn't do anything! I was desperately trying to engage the brake and shift to Park or Neutral and it wouldn't budge. I kept trying back and forth back and forth trying anything to get it to shift. It finally shifted to Park. I turned truck off. Opened the door, closed the door, and restarted engine and...

In April 2023, while driving to work, at least a dozen error messages were displayed on the instrument cluster. When I arrived at work and was driving at a slower speed, I noticed some irregular feedback in the steering wheel and quickly realized the power steering was intermittently disabling itself. The truck had just rolled over 30k miles at this point and was well within the manufacturer's warranty period. I took the truck to the dealer for repair and got the truck back within a few days and was told it was repaired. The very next morning while driving to work again, the same problem ensued again with a dozen error messages and the power steering intermittently disabling itself. I took the truck bad to the dealer, contacted Ford customer care, and they got an engineering team to help work the problem. The service advisor also told me there were...

While starting my truck, I was heard a very loud static sound coming from my speakers. It was so loud I could barely think. The static seemed to be at max volume and nothing besides turning the truck off and opening my door would make it stop. Even turning the volume down or screen/audio off completely would not help. I was parked at a store at the time and had to drive with the sound for 10 minutes. I was left disoriented and with a piercing headache that lasted over 24hours. That headache has subsided but I still have ringing in my ears.

The reverse camera either doesn't work while backing up, or it freezes while backing up. I have video of it screen frozen showing in reverse while driving forward down the road.

very loud ear piercing noise coming from the stereo system. had to remove the + battery cable to stop the noise. has happened multiple times since. cannot drive the vehicle during this condition. keep ear muffs in vehicle from now on.

On occasions my F150 has without warning had my volume increase to the max volume when operating the vehicle. I have not adjusted the volume when this happens and I am unable to lower the volume until I turn off the vehicle and open the door to the vehicle. The decibel level when this happens is over 100 and it is absolutely terrifying. I took my vehicle to Ford and they told me because they are unable to recreate the issue that it is not their responsibility. I have had this happen 6 times over the 8 months that I have had the vehicle. Ford charges me $197 each time to simply look at the car but again refuses to fix anything. When this event occurs it is terrifying and the only resolution is to turn off my vehicle.

I just purchased a 2021 F-150. Immediately after getting the truck home, I began having issues regarding the truck’s door and tailgate locks. Just by having my keys in my pocket and walking around my house and in the vicinity of the truck in the driveway or garage, the truck will unlock itself, all of the lights come on, and you can hear the electronics power up. This is a huge inconvenience if I’m working in the yard on a project and make multiple trips from the yard into the garage—every time I do, it’s puts that huge strain snd wear and tear on the lights, onboard computers, and battery. But it’s also a huge safety issue, too. If I put hazardous or dangerous items in the cab like cleaning products or chemicals and safely lock the vehicle expecting them to be secure, sometimes just by walking around the house...

While towing trailers the right directional works but the right brake light does not on the trailer. The trailer light work fine with other vehicles. It appears to be a problem with the trailer brake control module. Also while towing will get trailer light fault alerts even though the lights are working properly. Right after disconnecting the trailer you still get the trailer light fault alerts and your back up alerts on the camera are still disabled for days.

While driving, a warning light came on then the engine shut off. I was stranded in the middle of an extremely busy intersection. I could not put the windows up or in neutral to push it off the road. The hazard lights went to a very weak blinking that could not be seen. It was very dangerous to get out at the intersection. it was pouring rain and no one could see me. The truck had to be towed from the intersection to a dealer. Dealer allegedly identified the problem as a bad alternator that in turn damaged the battery.

After recent software updates sent out by Ford, my rear view camera display freezes and sometimes displays a distorted image. The freezing image makes it difficult to judge the distance between the vehicle and objects behind it, and it can also give the driver the impression that the road behind them is clear when it is not.

2021 Ford F-150 is equipped with 360 camera system and a backup camera. The 360 camera system failed within the first year of service. This left only the backup camera functioning. The dealer attempted to fix the camera system and resulted in all cameras including the backup camera not working. One year later ford claimed to have a part to fix all of the cameras. When it arrived at the dealer they reported that the software needed updated and the process would take approximately 3 hours. The next day the story changed again. Now it didn't need the part and Ford was advising that the software upgrade would cause more problems and not fix the cameras. The vehicle is now 2 years with 19,000 mile and still covered by a bumper to bumper warranty. The backup camera is a required safety devise on all new vehicles. I have a young...

My 2021 F150 XLT with 19,000 miles has never had functioning trailer brakes. Initially I was plagued with constant trailer wiring fault / trailer disconnected issues, and zero slide or pedal brakes, when trying to tow a travel trailer. Two separate dealerships initially dismissed my concerns because it passed their trailer simulator test. Eventually, Ford replaced the trailer wiring harness under warranty. After that, I had intermittent slide brakes that would work, but I never saw any brake output when using the pedal brakes, regardless of gain setting. Ford then replaced the trailer brake controller, which worsened the issue: once again I am getting trailer wiring faults. My slide brakes are extremely hit or miss, and when they do engage they catch and release several times. I still have zero brake output when using the pedal brakes regardless of gain. The dealership consulted a Ford engineer and assured me that...

Park/Emergency Brake system light illuminates and system engages when vehicle is placed from drive to park, and when system is shut down the light illuminates and engages. Also, when vehicle is started the park brake light shows to be engaged. When the vehicle is put in reverse the light is still illuminated while the vehicle is backing up. The light stays on while the vehicle is in backward motion. Safety concerns for me and my family are: 1. What if the Park Brake engaged while driving at normal speed - what could happen? 2. With vehicle parked and brake system engaged driver should not be able to put vehicle in reverse and back up without disengaging brake lever. The vehicle was taken to the local dealership service center twice to try to get resolution of the park brake light issue. They were unable to duplicate the issue and stated that...

While driving with sound volume at normal setting (volume 8), speakers started to pop and static erratically, which startled me, almost causing an accident. The issue will randomly go away, no warning lights on screen or dashboard. The static and pop sounds still continued at volume setting one. The erratic static and pop goes away then it happens again 20 min later. My ears are ringing from the popping sounds

Driving down the freeway, horn started blaring and power completely went out in car -engine steering etc The dealership is replacing the computer in the vehicle

UNKNOWN: I was driving through light to moderate rain. I was following traffic probably at about 35 mph. I was driving in normal mode (no cruise control active) I saw a warning message out of the corner of my eye pop up on my dash (I didn't see what it was because it went away quickly after it came up). Soon after that, a bunch of warning messages started popping up on my dash one after the other. Then my engine shut off (dash still working, sync still working, power steering still working, brakes still working). Luckily, I was able make a turn and then coast into a gas station. Could have been a different story if I was somewhere else. I came to a stop, put it in park, (this is the unfortunate part, I franticly clicked through all the warnings without reading them), then I pressed the start...

Speaker Issue: When starting the truck, after about 3 seconds of sitting in the truck, the speakers made a really loud pop noise and then continued to make a loud static noise and cracking noise for the duration of my 15 minute drive home. If this happened on the freeway, it may traumatize someone or cause an accident. The problem has happened twice but it is not been replicable for a dealer or service center. The truck has not been inspected by the manufacturer, police, or insurance reps. I read online that this is happening to a lot of 2021+ F-150s with the B & O Unleashed 18 Speaker sound package. Please recall this, it is the most dangerous speaker issue I have ever heard.

Trailer brake system fault. This fault warning displays when there is a possible lack of trailer brakes. On this vehicle it is on every time the vehicle starts. It began after the recall for the trailer brake module update in June of 2022. It has been to the servicing dealership 4 times and has been there for the past 23 days without resolution. There are many other accounts of this situation on-line also with no resolution.

A deafening pop and static sound coupled with a burning electrical smell. Startled me nearly off the Rd.

The contact owns a 2021 Ford F-150. The contact stated that after inserting the key into the ignition, there was no power to the vehicle which prevented the vehicle from starting. No warning light was illuminated. The vehicle was towed to the dealer where the failure could not be replicated; however, the contact stated that he was not provided the details of what repair was performed. The contact was concerned that the failure would recur. The manufacturer was not notified of the failure. The failure mileage was 22,500.

The contact owns a 2021 Ford F-150. The contact stated that while towing a trailer, he attempted to make a right turn while driving downhill. The trailer began to push into the vehicle and slide into the back end of the truck. The contact attempted to manually apply the trailer brakes but the trailer brakes failed. The traction control warning light appeared on the instrument panel as the contact began to lose control of the vehicle. The trailer pushed the vehicle off the road and onto a mount of dirt and stone. The trailer damaged the rear bumper and rear right corner panel of the vehicle due to the failure. The contact did not suffer any injuries due to the failure. A police report was not filed since the failure occurred on his property. The dealer was initially notified of the failure and offered no assistance. The contact took the...

Seal - Valve - Ford (KL3Z-9U465-A) I have the same engine that is failing in all of the new Ford Broncos - Ford's 2.7L V6 2nd Generation, however, I have this engine in an F-150. My vehicle has been sitting at the dealership for over a month, diagnosed with a faulty valve (same issue that is in the broncos) Seal - Valve - Ford (KL3Z-9U465-A) Something needs to be done about this - Ford has offered me no loaner or rental vehicle AND I am still paying car payments while it is sitting up there at Ford! Help

The contact owns a 2021 Ford F-150. The contact received notification of NHTSA Campaign Number: 21V986000 (Power Train, Structure) and 22V193000 (Electrical System) however, the parts to do the recall repairs were not yet available. The dealer was made aware of the issue. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repairs. The contact had not experienced a failure. VIN tool confirms parts not available on NHTSA Campaign Number: 21V986000. Parts distribution disconnect on NHTSA Campaign Number: 22V193000.

The contact owns a 2021 Ford F-150. The contact stated while driving approximately 65 MPH, the brake was inoperable. The contact stated that the trailer brake warning light was illuminated. The vehicle was diagnosed with software failure and repaired. The manufacturer was notified of the failure. The contact related the failure to NHTSA Campaign Number: 22V193000 (Electrical System) however, the VIN was not included. The approximate failure mileage was 4,600. The contact stated that the trailer brake controller was replaced and the issue with the vehicle no longer exists.

The contact owns a 2021 Ford F-150. The contact stated while driving at an undisclosed speed, the vehicle lost power steering assist and became difficult to maneuver. The contact stated that several warning messages appeared on the instrument panel as he had stopped the vehicle on the highway shoulder. The contact was able to drive to dealer where he was informed that the failure was a commonly known issue. He was informed that the wiring underneath the engine was soy based and had been eaten up by rodents and other outdoor creatures. The contact was given an estimate for the cost of the repair. The manufacturer had been notified of the failure and referred the contact to the NHTSA for assistance. The vehicle had yet to be repaired. The failure mileage was approximately 10,000.

Automatic stop and go stopped working and dealer is unable to repair it. It has been to the dealer twice. It stopped working for the second time on October 25, 2021. The dealer has had the vehicle since December 30, 2021. As of today January 13, 2022 they still haven't found the problem

Cluster will randomly shut off causing all gauges to act like the vehicle isn't on. Then it will turn back on. I notice that transmission temp gauge will be the only gauge that wouldn't go back to normal. It will take several minutes for gauge to reset. The risk is not knowing your speed and causing a distraction to what is happening while driving. No dealer could redo the problem.

The Pro Trailer Assist program won't load or work along with constant electrical lamp fault messages when trailering my boat. This is a safety concern because you can't tell if the trailer lights are really working or not while driving. I also experience the turn signals blinking really fast like a bulb is out - when none are actually out. The local dealer's electrical technician has reproduced and confirmed my issues. The manufacturer is aware of my problem and is currently offering to put me in a 2022 truck that will be built in February. The Pro Trailer Assist program never would load or work from day one. The electrical lamp fault messages started as soon as I trailered my boat. All the lamp fault messages and fast blinking turn signals only happen while trailering my boat. The local dealer had my new truck forty days and replaced the APIM...

After connecting my boat trailer, I had ZERO trailer brakes. The lights all worked, brake, running, signal-but no trailer brakes. I turned the integrated trailer brake gain to the highest setting-still zero trailer brakes.

"Trailer disconnected" randomly pops up accompanied by a chime. Sometimes once a day, some times multiple times, time after time. Some times skipping a day. This is with NO trailer connected. Brought to the dealer with a code u0143 saying it is a network code and they cleared it and test drive it. But still happening. Had this truck not even 2 weeks and im not very happy to say the least. Never towed with it.

On multiple occasions my ABS system doesn’t work (no collision assist fault and ABS fault comes on). Brakes don’t work without great force when this happens. Ford service saw the errors in history but said couldn’t fix / find current issue. This is intermittent so active fault lights and issue come and go. Dangerous condition that Ford isn’t addressing!

Phantom dead battery truck died

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

INTRUSION ALARM GOING OFF IN THE MIDDLE OF THE NIGHT FOR NO REASON. VEHICLE IS PARKED AND LOCKED IN THE DRIVE WAY, HAPPENS EVERY NIGHT. MUST DISABLE MOTION SENSORS PRIOR TO PARKING OVER NIGHT EVERY TIME.

VEHICLE INTRUDER ALARM ACTIVATES FOR NO REASON. HAS HAPPENED 5 NIGHTS ACROSS 83 DAYS OF OWNERSHIP. VEHICLE HAS LESS THAN 3500 MILES AND LOCAL FORD SERVICE CANNOT FIND ROOT CAUSE.

IF THE TRUCK SITS FOR MORE THAN 2 DAYS THE BATTERY WILL BE DEAD AND UNABLE TO BE JUMPSTARTED WITH JUMP PACKS. HAD TO HAVE THE BATTERY REPLACED IT WAS SO DEAD ALREADY.