The 10 speed transmission shifts erratically on both the up shift and down shift sometimes as much as 3 gears and the electric motor interface is also rough and I’m afraid it’s going to self destruct while driving on the highway leading to an accident
2021 Ford F-150 Hybrid transmission complaints
Page 4 of 5: complaints 71 to 100 of 129, newest first, as owners wrote them.
(June 14, 2023) While traveling at 55mph the vehicle suddenly accelerated for about 2-3 seconds and several dashboard lights turned on and flashed not available. (ABS, Traction control, Blinds Spot, pre-collision) I safely pulled over turned the truck off, waited a few seconds. Turned the truck back on, and ABS light was solid on the dashboard. I drove another 15 miles stopped again, and when I restarted the check engine light remained solid. After inspecting the truck, I found gear oil leaking from the right rear tire. I removed the plastic hub cap and discovered sheared off axle bolt. Truck was delivered to dealer for repair.
Jerking when accelerating and shifting, when this occurs vehicle has a harsh movement forward then there is a delayed response when trying to accelerate have been multiple occasions where I go to make a turn and vehicle doesn’t respond or stopping in the middle of a turn almost causing my vehicle to be tboned
the bolt connecting the drive shaft to the hub has broken off
After coming to a complete stop the truck violently lurch’s forward. To the point that it feels as if another vehicle has contacted the rear of the vehicle. This seems to be attributed to an auxiliary pump failure.
Rear axle hub bolt sheared of passenger side of vehicle.
The passenger side rear axle bolt sheared off. Safety was put as risk because there was no longer anything holding the axle in place. The problem was confirmed by the dealer, who replaced the axle.
Axle bolt broke
This problem has been ongoing, happening nonstop up to multiple times daily since Feb of 2022 and has spent now 70 days at the dealership in search of the issue. Luckily, the vehicle has not caused an incident yet, but I am afraid to drive it if I get it back from the dealer again as the issue has just gotten worse. The vehicle randomly while driving goes into a "limp mode" in which 1 of 2 things happens. 1) If unable to pull over immediately, the vehicle has very erratic throttle control and 2) the vehicle sometimes gives a warning about the "adavancetrack" system and will sometimes shift itself into neutral out of nowhere forcing you to coast to a stop no matter where or what type of street you are on. In researching this problem to help my dealer at first and now to try and protect myself while in a battle with ford, it seems to be a common problem discussed on many forums on the internet and facebook and seems quite common among the F-150 powerboost. Ford is refusing me a buyback at this time and ignoring the safety implications that my vehicle is having
Complete loss of the throttle while in an intersection. Was able to shut down vehicle, then wait about 30 seconds, then turn it back on clears issue. This has happened at least three times
Both rear axle retaining bolts snapped. The only thing holding the axles in was the brake rotors and calipers. Had they not started squeaking and grinding, I would not have known those critical bolts had broken! At the dealership now being repaired. With the same faulty methods and parts. VERY common problem for the F150 Powerboost with the Max-Tow package.
Powertrain malfunction / reduced power error
Rear Axel Bolt Failure. Please help. This has been an issue for over a year with newer F150s. Most failures occur on the "Max Trailer Tow Packages" with the "floating rear axel". You'll see multiple failures on new trucks. Mine has ~18k miles. Dealer says it's unsafe to drive. Many are finding broken bolts incidentally when getting tires rotated. Others like myself hear it rattling. Someone will get hurt. I have a rental car provided by ford because it's deemed unsafe.
Passenger side rear axle bolt failure. The bolt sheared off completely and was found rattling inside the center cap. Dealer states vehicle cannot be driven. Ford will provide rental until repaired but can’t provide estimated repair date.
While traveling at around 70 mph, the truck felt like it losing power. As I further step on the accelerator, the truck didn't response. The truck then jerked and shifted to gear 9 and jerk again then shifted back to gear 10. This happen for about 10 to 15 minutes and back to normal. During this time the truck loss the ability to accelerate. This happen during the cruise control engaged and also happen without the cruise control engaged. When this happen, the truck had about 35,000 miles and it happened during a road trip from Southern California to Flagstaff, AZ. The problem also happened on the way home. The problem was not observed as the truck travel at 65 mph or less.
My truck has had its rear axle bolts shear off in two separate occasions rendering the vehicle unsafe to drive.
Passenger rear axle bolt sheared off at 13,3xx miled# now the dri ers side axle bolt sheared off at 18,288 miles.
I have now had BOTH sides of my rear axle bolts shear off. Both times discovered while rotating tires, the head of the axle bolts were completely broken off
The contact owns a 2021 Ford F-150. The contact stated while driving from a complete stop, the vehicle hesitated to respond and made an abnormal banging sound while responding. There was no warning light illuminated. Additionally, the contact stated that the transmission was slipping while driving. The vehicle was taken to the dealer where the failure could not be duplicated. The vehicle was not diagnosed or repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 17,900.
Rear axle bolt has sheared off numerous times with no resolution. Ford just replaces the bolt with a new one.
2021 Ford F-150 PowerBoost Lariat, 3.5 V6, with Max Tow package - right rear axle bolt sheared off at about 11,000 miles. Cause to look included squeaky/screeching sound in right rear on both braking and with acceleration. Upon removing center wheel cap discovered axle bolt had sheared off and was simply sitting in the cavity of the center wheel cap.
My 2021 Powerboost F-150s experienced an issue where the truck lurched 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. I dropped the truck at the local Ford dealer and was told it will take 1 to 3 months to fix the vehicle due to part in back order.
Sheared right rear axle bolt.
Rear Rotor/Axle Bolt Sheared. Truck not drivable. Dealers in area can't look at truck for at least a month and saying shouldn't drive it either. They won't order parts unless I tow truck to them. I'm having the same issue as posted in these threads and various FB posts too. https://www.f150forum.com/f129/2021-powerboost-rear-rotor-axle-bolt-sheared-515460/ & https://www.f150gen14.com/forum/threads/f150-powerboost-axle-bolt-sheared-off.10392/
The bolt that holds the left side rear wheel to the axle sheered off. This was discovered when the vehicle had 9,200 miles on it. When the wheel was removed the sheered bolt and washer fell out. Based on the condition of the bolt it was apparent that the bolt had been sheered off for quite some time. This truck has not been off road nor has it been used to pull a trailer yet. The truck is a 2021 Ford F150 Powerboost truck Platinum edition.
I heard a very loud screeching noise around 4K miles and took it to the dealership, they said my axle nut on the driver side of the truck was sheared off. They said it was covered under warranty and repaired the issue. 8k miles after repair it is doing the exact same thing. No check engine lights for this issue ever appeared on the dash. Ford spend about 3 weeks or longer fixing this the first time. They promised when I purchased the truck if there where any issues I would get a loaner vehicle, nothing available to loan on the first time. Now that it’s happened again I called to scheduled a time to repair and they say I can’t even get seen until January 20th. So this truck has costed me a lot of out of pocket money for rentals.
Passenger side, rear wheel axle blot sheered off, been loose for ??? Was told not to drive the vehicle, safety issue. Seems to be a common problem with the Mac towing package.
Heard squealing in brakes and rattling in passenger rear area. Took to Ford service and they found loose bolt head and washer that was sheared. Recommended not to drive vehicle but could not confirm that it is a warranty issue at this time. Less than 24k miles on vehicle.
On 10/22/2022 I took my truck in to the ford dealership for oil change and tire rotation, upon rotating the tires the technician found the axle bolt on the rear drivers side was sheared off and part of the bolt was still in the axle. The dealership kept my truck and ordered a new bolt and gave me a vehicle to drive. My truck has 26,744 miles on it. I am concerned after reading many posts on ford forum this will continue to happen after warranty expires. Some of the posts stated ford dealerships were replacing the axles. Please advise thank you
Vehicle lurches forward when transmission is in drive position, when stopped with foot on the brake. It is very forceful and feels like being hit from behind. It could easily cause a collision with a car stopped in front of my vehicle.
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