I took my 2021 F150 Powerboost with Max Tow package into the Ford dealership for service and to inspect a noise coming from the driverside rear wheel. When the wheel was removed the source of the noise was confirmed as a sheered-off axle retaining bolt. I was told by the service department the truck was unsafe to drive. I am unsure if this nut holds on the wheel hub assembly but I'm guessing it could lead to loss of power in the affected drivewheel or loss of the wheel altogether. Upon doing some internet research this is quite a common issue with the 3/4" floating axle that was new to the 2021 model year for the Max Tow package. This is an issue with the drivetrain of the vehicle that could lead to safety issues for the occupants and others and should be recalled with upgraded/redesigned parts.
2021 Ford F-150 Hybrid transmission complaints
Page 5 of 5: complaints 101 to 129 of 129, newest first, as owners wrote them.
When I come to a stop, my truck will try to lunge/jump forward after a few seconds. It has been happening for a few weeks now. This could result hitting another car in front of me or potentially a pedestrian if I am stopped at a cross walk. I took it a dealer yesterday and they confirmed the problem. They attempted to reprogram it and said it fixed it. Later that night and again this morning, it did it again.
The rear axle bolts sheared off for unknown reasons. The symptom was a metallic rattling noise from the back of the vehicle - the noise was pieces of the axle bolts bouncing around inside the wheel center cap. The bolt in questions holds the rear axles in place. Vehicle has been at dealership for 2 weeks as they said it was a common problem that is a safety issue. Said it was possible for one or both of the rear wheels to fall off if I had continued driving it. Obviously losing one or two wheels is a huge safety concern. My dealer said he has seen this exact issue 4-5 times on similar trucks. Vehicle is less than 9 months old and has less than 13,000 miles on it. Vehicle is being repaired under warranty but using the same parts.
A noise being heard any the rear-end of the truck. Upon taking the rear tire off for investigation a bolt head was noticed in the center of the rim. This bolt came from the axle. The bolt in question holds the axle in place, if driven for a great distance then a chance of the axle floating towards the gear which could have caused a major safety concern for the occupants of the truck and anyone on the road Truck is currently at the shop, but dealer is replacing parts with same components. No root cause has been found to address concern. Other side of axle could reflect the same condition
I brought my truck in for routine maintenance oil change & tire rotation and was notified by the dealership that the right rear axle bolt was broken off and that the axle needed to be replaced and that it wasn’t safe to drive it until it was replaced well here’s my problem I didn’t know it was broken or unsafe to drive and had I not brought it in for the oil change early I would still be driving it like that this is a serious problem which could result in a loss of control and accident I’m not the only one that has had this happen I’ve researched it a little and found multiple people on an F150 forum that have had the same experience
There is a fairly common issue where there are bolts at the end of the rear axles (P/N 19S426) have the bolt head shearing off and rattling around inside the wheel. I had one such broken bolt. The issue is large enough that hundreds of owners are reporting this on Ford Truck forums, namely on the 2021 Ford F-150 Powerboost with the Max Tow Package like mine. Ford needs to recall this.
Passenger rear axle bolt broken. This seems to be happening only on Max tow equipped vehicles, LOTS of them.
Rear differential, passenger side axle bolt broke off. I removed the right rear wheel after hearing a metallic noise while braking to inspect, as soon as I removed the wheel a broken head bolt and washer fell out and you can clearly see the other piece of the bolt is still in the axle shaft. I am not sure if this bolt breaking off could cause loss of wheel or axle. But now my brakes are making noise, I believe as a symptom directly related to this issue. I looked up 2021+ F150 forums and customers with this max trailer tow axles are experiencing the same thing. I took the vehicle to the dealer today to get this inspected and am awaiting an update. The only indicators of a problem was loud metallic noise while braking, and a slight ringing sound while driving without braking. It was all sounding in the rear of the vehicle.
When in regular use of this hybrid Powerboost F150, the truck lurches forward on electric motor power as if you just got rear-ended. This happens every single time you have to come to a stop for more than 5 seconds. The only way to avoid this issue is to drive in"tow/haul" mode which keeps the truck's engine running. This defeats the purpose of a hybrid truck, and you have to remember to switch the running mode from normal to the haul/tow mode. This lurching had to be causing extra wear and tear on the drive train parts. Apparently the problem is a faulty "Transmission Fluid Auxiliary Pump". Many of us on the Ford F150 forums are waiting on our dealers for this back ordered pump. Apparently Ford continues to build vehicles while falling to provide a replacement pump? I am concerned as to the design of this pump as well. My"new" truck only has 7800 miles on it, a little over one year old, and the pump is defective. Is this going to be a reocurring problem? This is a safety issue and should be addressed ASAP. Thank you for your attention to this matter..
My 2021 Ford powerboost Lariat lurches forward when at a stop in normal drive mode, it feels like someone rear ended the truck.This is a safety hazard if I don’t have my foot pressed hard on the brakes I could be launched into on coming traffic or hit someone crossing the street.
Heard a metal grinding coming from the rear axle on . Took it to Ford dealer maic Haik in Georgetown Texas. The found the axle bolt had sheared off. It is in the shop currently waiting a warranty repair and the shop indicated this was not the first one they had seen.
13800 miles, broken axle/wheel bearing retaining bolt. Screeching noise. Bad wheel bearing. Dealer will not replace wheel bearing because they do not correlate the broken bolt to a bad wheel bearing. Leaving me with a bad wheel bearing that I consider prematurely worn out and is making a clicking sound. Dealer says they cannot replicate the noise so will not investigate further
Myself and several other individuals with 2021/2022 Powerboost F-150s are experiencing an issue where the whole vehicle will lurch forward as if hit from behind after coming to a stop. This can result in the truck hitting the vehicle in front of you if you are in tight traffic.
In May 2022, the passenger side right rear axle bolt sheared off creating a squealing/grinding noise from that wheel. The only thing holding the wheel onto the axle were the brake caliper bolts. The repair involved a new axle. In early Sept 2022, the driver side rear axle bolt sheared off with the same results. The vehicle is now in the shop waiting for the parts to arrive. Dealer advised that this is a serious safety issue and requested that the vehicle be towed to the service center.
The driver side rear axle retaining bolt sheared off rendering the truck not drivable. The truck is at the Ford dealership I purchased it from waiting for a replacement part. This is such a common problem that the axle shaft is on back order, so I am without my truck until the parts are available. Upon researching online I have found this to be a common problem that Ford is very much aware of but have not taken action to correct.
Rear axle bolt sheared off. Per Ford axle must be replaced
The contact owns a 2021 Ford F-150. The contact stated that while driving at various speeds, a humming and tapping sound was present coming from the rear undercarriage of the vehicle. The vehicle was taken to the local dealer who diagnosed that the underbody insulator was faulty and had caused damage to the driveshaft. The vehicle was not yet repaired. The manufacturer was notified of the failure. The contact indicated that the vehicle was previously inspected under the federal safety agency Campaign Number 21V986000 (Power Train, Structure) however, the vehicle experienced a failure after the inspection. The failure mileage was 26,836.
Drivers side rear axle bolt sheared off. Noticed noise coming from rear while driving, removed wheel, bolt head and washer fell to the ground. Bolt head and washer we’re both retained. Local dealerships (albuquerque, NM) do not have the capacity to diagnose the truck for a minimum of two weeks. The structural integrity of the axle and drivetrain are in question.
Broken retaining bolt holding the wheel on the right rear axle. Dealer said too dangerous to drive so they replaced axle. Dealer has old axle and broken bolt. This problem exists in the 2021 F150 Powerboost truck with 9.75 in 3/4 floating axle. Several postings on F150 forum of this happening to others with same truck. Nothing holding rear wheel on except brake caliper if bolt brakes and wheel wobbles loose. When service tech takes wheel off to rotate tires the broken bolt falls on the floor.
Rear passenger axle bolt sheared off.
When drive train goes into electric drive mode, the vehicle will jump/lurch/bang after stopping like I was hit by another car pretty hard. This will only happen when the engine either goes into hybrid electric mode or engine turns off after a stop in sport and other modes. It will not happen in tow mode where the engine stays on. The issue is the aux pump on the transmission going bad, this was found by dealer and part is on national backorder. Truck can jump a foot forward at red light if foot is not smashing the brake pedal down - seems to be an issue popping up daily on forums from others having issues.
The contact owns a 2021 Ford F-150. The contact stated that the gear shifter seized while shifted in park(P) and was unable to shift to the intended gear. Additionally, the gear shifter fractured when the contact forcefully shifted out of the park(P). The contact had been waiting for the vehicle to be towed to the dealer; however, the vehicle was not diagnosed nor repaired. The manufacturer was made aware of the failure and was forwarded to roadside assistance. The failure mileage was approximately 1,500.
Truck does not always does not always downshift to a lower gear at a stop and instead remains in 8th gear. This poses a safety risk do to a lack of acceleration and also causes an unanticipated sudden jerk when it does finally does engage in a lower gear.
I took the vehicle in for a tire rotation and oil change at approximately 18,000 miles. The dealer informed me that the passenger side rear axle bolt had sheared off and that the bolt had to be drilled out and replaced. The repair did not solve the problem and now the axle has to be replaced.
Outer axle bolt sheared from passenger front axle assembly. Both passenger and driver axles had to be replaced because of grinding noise and nut/bolt found in center cap of wheel.
Axel bolt sheared off for rear drivers Axel. Only part holding tire on was break rotor and caliper. The dealer found during a routine oil change/tire rotation. The only symptoms was shifting hard when driving, and slight rattle when driving as the bolt head was caught in the wheel center.
The Check Engine Light illuminated and brought to Ford dealer. Was advised it has code P237C which is a failed Exhaust Heat Exchanger, dealer ordered part # ML3Z5A212W. There is no coolant leak visible from the failed part. But driving down the highway around 70mph, the vehicle suddenly decelerates and goes into Reduced Power Mode, throttling back the engine. The reduced power mode is displayed on the instrument cluster, but it is still startling to have the vehicle decelerate, especially at highway speeds in traffic. And would be more problematic with a trailer in tow. My Ford dealer has the part on order but Ford states it is on back order with no expected delivery date. Very disappointing from a quality stand point, but a concern as well from a safety perspective. I know others have had a similar issue which is also accompanied by a coolant leak, which I do not have on my vehicle but I am concerned and continue to monitor for leaks and watch the fluid level. I do not have any photos of the valve. Unexpected reduction of engine power in my opinion is a safety issue, especially at highway speeds or when towing. Thank you for your review of this issue.
They have had this recall since Dec 16th and I have taken the truck and called the dealer several times and they said that Ford has not remedied this recall yet. It is a huge issue and they aren't doing anything about it, several online forms have cited this exact problem with their truck yet Ford is not fixing it.
Fails to accelerate when switching from electric power to gas power. This happens when pulling out of a parking lot onto a Houston,Tx feeder street after the truck has set for awhile and on electric power when started and medium to full power is used to merge into traffic. The switch over from appears to work but shows no turbo boost causing a lack of power to merge safely and this only happens after first start the rest of the day truck operates normally or until it is shut off again for awhile making this truck a accident waiting to happen. Yes the service manager witnessed this so left truck to be repaired but since no engine check lights or codes he had to call ford without knowing all the answers from one little short ride they came back with a answer that was unacceptable blaming it on a clutch operation that was normal. If so why does it happen only after new start and corrects itself?
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