2021 Ford Expedition: transmission slipping

Filed Oct 22, 2026 · Acceleration, Visibility · MN

Wiper switch not working for auto, because switch itself is broken. When accelerating to pass a car the transmission skips/slips and car pauses and gas pedal won't work for 10 seconds. Car basically stalls. Could have caused accident if unable to pass or slide back over behind the car trying to pass.

Filed Aug 30, 2026 · Transmission · FL

My Ford Expedition’s 10-speed automatic transmission experienced repeated slipping and sudden loss of propulsion. While accelerating from a stop and entering the highway, typically around 15–20 MPH, the engine would suddenly rev but the vehicle would stop accelerating, as if the transmission had shifted into neutral. I had to release the accelerator for several seconds and slowly reapply throttle before the transmission would re-engage. This occurred repeatedly and created a serious safety hazard when pulling into or crossing traffic because the vehicle could begin accelerating normally and then unexpectedly lose propulsion with approaching traffic. The transmission also exhibited severe harsh/banging shifts during harder acceleration and produced a rattling noise while slipping until the accelerator was released. CDF drum failure has been confirmed. The vehicle is currently at a reputable independent transmission repair facility undergoing a transmission rebuild due to the CDF failure. The transmission/components are available for inspection during the repair. There were no warning lights or messages that reliably warned of the impending loss of propulsion. This was not simply poor shift quality; the transmission defect caused an actual loss of propulsion while driving. Because this failure can leave a driver unable to accelerate while entering an intersection, pulling onto a highway, or merging into traffic, I believe the CDF failure presents a serious safety risk. I am requesting the federal safety agency investigate CDF-related transmission failures and determine whether a safety recall is warranted. TSB 23-2250

Filed Jul 16, 2026 · Transmission · MO

The vehicle first experienced severe, violent jerking and slipping when shifting between the 4th & 5th gears. The vehicle was held by a Ford dealership for 21 days for this issue, but the repair failed. Two months after being out of the shop the transmission has rapidly degraded and is now actively experiencing the same severe, violent jerking and failing to engage in every single gear except 10th. The vehicle completely loses acceleration power while driving, creating an immediate crash hazard. Dealerships in my area are refusing to accept the vehicle for 2 to 3 weeks due to scheduling backlogs, leaving me with an active, dangerous powertrain failure under warranty.

Filed Jun 16, 2026 · Transmission · FL

Hard Shifting & Slipping: Drivers frequently report clunking, hard shifts (particularly around gears 3-5), and the vehicle lurching forward when accelerating. It does this while driving and is a serious safety issue.we complained to the dealer about a year ago and they told us they checked and it was fine. Now it is worse.

Filed Jun 3, 2026 · Transmission · FL

“10R80 transmission slips and loses power during acceleration. Matches Ford TSB 23‑2250. Sudden loss of propulsion creates safety risk when merging or crossing intersections.”

Filed Aug 23, 2025 · Transmission · TX

The transmission shakes the truck at 5th gear and up. It slips out of gear. Sounds like the toque converter is coming about. Or the High gear clutches are slipping.

Filed Jul 15, 2025 · Transmission · NC

This vehicle continues to exhibit transmission shuddering, slipping, and hesitation during acceleration—despite two full transmission replacements in two years and multiple dealership service visits. These unresolved issues compromise safe operation, especially during highway merging, rapid acceleration, and lane changes. Both dealerships were unable to permanently address the issue after extensive mechanical intervention. Ford has issued multiple Technical Service Bulletins addressing transmission concerns in the 10R80 unit used in the Expedition. The most recent bulletin, TSB 25-2132, revises procedures for harsh and delayed shifting, shudder, and internal hydraulic leakage tied to the CDF clutch drum—which aligns directly with the findings from my own transmission overhaul documented in June 2023. Previous service entries noted suspected internal leakage around the CDF clutch, RPM flare during shifts, gear hesitation, and recurring drivability issues despite component replacement. These match symptoms targeted in prior TSBs, including: TSB 23-2123: Harsh engagement and shift delays TSB 24-2101: Hydraulic leakage diagnosis linked to clutch cylinder TSB 25-2023: Update to inspection and service steps for gear shift quality While dealerships performed repairs and even full transmission replacements, the lack of lasting resolution and repeat issues reflect a broader mechanical defect addressed reactively rather than proactively through these bulletins. Despite awareness at the manufacturer level, I experienced significant delays, financial burden, and ongoing drivability risks. I respectfully request that the federal safety agency further investigate Ford’s handling of repeated 10R80 transmission failures in the Expedition, particularly concerning the effectiveness of these bulletins in preventing recurrence and mitigating safety impact

Filed Jul 2, 2025 · Transmission · GA

Transmission Failure Rough or jerky shifting: This occurs when accelerating or decelerating, and even when shifting between gears. Delayed gear engagement: Shifting from park to drive or reverse can be slow, or the vehicle may lunge into gear. Transmission slipping: The transmission slips between gears, causing a loss of power or acceleration. It can also cause a violent grinding/shaking between shifting gearshifts resulting in loss of acceleration.

Filed Mar 7, 2025 · Transmission · GA

Power Train went out on our family vehicle at 107k miles. This is a known problem by Ford for this model, and it is a major hazard. It created a dangerous driving situation for our family. The transmission would slip or quickly shift down to lower gears while driving at higher speeds causing the vehicle to malfunction in traffic and creating a very dangerous driving situation for our family. The vehicle is currently at a Ford dealership awaiting repair. Ford is aware there is a safety hazard concerning the transmissions in this model and they need to fix it ASAP.

Filed May 23, 2024 · Transmission · AL

Transmissions quickly break down. First signs are hard/loud gear shifting followed by slipping gears then eventual inability to accelerate. Regular transmission drains find metal contamination indicating breakdown of gears. Ford Motor Company is aware of this issue and will replace the transmission with the same failing transmission. Their proprietary system makes it difficult to diagnose and repair leading consumers to have to buy a replacement after 60k miles (which just so happens to be the extent of their warranty).

Filed Aug 14, 2023 · Airbags, Transmission · TX

Transmission is slipping and hard shifting or fails to shift. I noticed it at hot temperatures but does it now constantly. Airbag is starting to come out of the perforation below the Ford symbol on the horn. I'm concerned it will deploy while driving and cause a traffic accident/injury/death.

Filed May 1, 2023 · Transmission · AL

Severe transmission slippage/failure at all speeds. Gear disengages randomly during acceleration. No Ford dealer wants to take the responsibility to repair or fix it. Per the dealers, the computer doesn’t log the occurrences. Hard to believe that and hard to believe there is a major class action lawsuit in CA regarding this.