2017 FORD F-150 Complaints

6 speed automatic transmission downshifts while traveling at high speed into low gear by itself, causing vehicle to change speed and lock up rear wheels. Very dangerous! Vehicle has 66,150 miles on it, and isn’t used for work. The transmission also shifts into second and third gears while sitting still at a traffic light. This has happened multiple times. It is just now 1 month out of service contract (ended 8/2025 it started 9/2025). It is available for inspection. It has not been to dealer or mechanic yet for inspection or repairs to this certain transmission issue. It has ONLY ever been serviced by Ford dealer on regular basis since I purchased it new. No warning lights or codes of any kind. This is now not safe to drive, as it’s happening almost daily. Hopefully this is a RECALL soon and Ford does the right thing!

After reports to my Ford service center about hard shifting and being charged to reset something in it I took the truck back AGAIN for the third time to be told the problem was with technical service bulletin 25–20 126 delayed engagement shifting issue they were gonna fix had a more in depth problem, cdf was replaced and the transmission case was cracked and replaced. Please note I bought this was 77,000 miles and reported the problem to Ford soon thereafter it wasn’t until 89,000 miles that they finally found the problem. Although I had an extended warranty, I still had to pay $992.00.

The contact owns a 2017 Ford F-150. The contact stated that while driving at various speeds, the transmission shuddered while attempting to accelerate. The cause of the failure was not yet determined. The contact stated that there was an abnormal rattling sound coming from the engine at start-up. The cam phasers were replaced by an independent mechanic. The dealer and manufacturer were notified of the failure. The failure mileage was 48,000.

Transmission dropped into first gear at 45mph. Rear end locked up while taking my kids to school. Output speed sensor in transmission. Lead frame issue.

While driving , brake pedal went to the floor causing vehicle to barely stop. upon stopping and exiting vehicle noticed brake fluid on the ground and right side brake hose had ruptured. Vehicle had to be towed for repairs. Ford Service department says entire brake line and hose must be replaced due to "fitting is swollen".

Engine exhibits severe rattle on cold start ups. Occasionally a loud rattle occurs at highway speeds at random times. After research, I discovered Ford was aware of the failure of the cam phasers that produce this issue.

The oil pan has a rtv gasket from factory and started leaking, I’ve replaced it twice and is still leaking. It’s expensive and cumbersome. It runs the risk of oil starvation, this would cause catastrophic engine failure, ford has TSB for this issue. UNKNOWN UNKNOWN

I am writing to report a serious and recurring safety issue with my vehicle. On multiple occasions, while either pulling out into traffic or driving at normal speeds, the vehicle has unexpectedly dropped into first gear. This sudden downshift has caused the vehicle to decelerate abruptly, nearly resulting in a loss of control and posing a significant risk of an accident. As a business owner, I often have crew members riding with me, and this malfunction endangers not only my employees but also my family when they are in the vehicle. This is an unacceptable and dangerous situation that must be addressed immediately. I am requesting a full inspection and diagnosis of the transmission system, along with a permanent resolution to this issue. I urge you to prioritize this matter due to the safety risks involved.

Transmission lead frame failure. Common / known issue with Ford F150's. Evidently, there is a recall on the part that mine needs, but my vin isn't included in the recall. I can't accelerate at random. Vehicle starts off in 3rd gear / limp mode Yes, confirmed by ASE certified tech Replacement part isn't readily available due to high failure rate and recall.

Was on my way to work going about 75 and my truck shifted from 6th gear to 1st gear causing my back wheels to lock up and caused me to lose control nearly wrecking my vehicle