2020 Lincoln Navigator: jerking or lurching

Filed Aug 20, 2026 · Transmission · TX

On August 20, 2026, while traveling about 45 MPH, I accelerated to merge onto a highway while passing a slow-moving semi, with traffic approaching from behind. The transmission unexpectedly disengaged and the vehicle completely lost propulsion. The gear indicator showed Neutral. The engine rapidly increased RPM/redlined but the vehicle would not accelerate. I pressed the Drive selector to re-engage the transmission. The vehicle lurched/slammed before Drive engaged and propulsion returned. This created a serious collision risk while merging into highway traffic. This is not an isolated incident. For approximately four years the vehicle has intermittently exhibited rough/abnormal shifting or slipping during acceleration, progressively worsening. During a previous loss-of-propulsion incident on a two-lane highway, the failure occurred while passing a semi with oncoming traffic, creating a risk of a head-on collision. We repeatedly discussed the transmission problem with dealership personnel. Because it was intermittent, the dealer said diagnosis required leaving our primary family vehicle for several weeks, without a loaner. The selling dealer, about six hours away, later offered to retrieve the vehicle and provide a loaner, but canceled because no loaner was available. The defect was therefore never successfully diagnosed or repaired. After the August 20 incident, dealer-provided connected-vehicle diagnostics recorded a Powertrain System Fault and TCM codes P27B5 (Transmission Gear Ratio Control Performance), P2796 and P07E6. The vehicle is parked and available for inspection because I consider it unsafe to drive. It is also subject to open the federal safety agency Recall 26V402/Ford 26S48 involving the transmission/parking system; no remedy is currently available.

Filed May 20, 2026 · Transmission · MO

CDF Drum Failure is a known issue to Ford. They have issued a technical service bulletin (TSB 22-2428) to replace poorly designed components that have since been redesigned. The failure mode can cause violent gear shifts (from gear 10 to gear 1) at high speeds, which is a significant safety concern. While driving on the highway, the transmission would not shift between gears and the car lurched. Check engine light came on and I exited the highway immediately. I took my vehicle to be looked at, and they diagnosed the problem as CDF Drum failure. Ford needs to take responsibility for their problematic design in these vehicles.

Filed Jul 15, 2025 · Transmission · VA

The transmission system failed, causing jerking during acceleration. The original transmission was replaced by the dealer, so it may be available for inspection if retained by the dealer or returned to Ford/Lincoln. Jerking during acceleration can create safety risks including: unpredictable vehicle behavior during merging or passing, potential loss of control in traffic situations, and compromised ability to maintain consistent speed or smoothly accelerate away from hazards. Yes - the dealer confirmed the problem and determined the transmission required replacement, indicating they reproduced and verified the issue. Ted Britt Ford Lincoln, Chantilly, VA inspected the vehicle. No dashboard lights.

Filed May 10, 2024 · Transmission · 100,000 miles · OH

The contact owns a 2020 Lincoln Navigator. The contact stated while at a complete stop, the vehicle shut off inadvertently. The contact stated that the vehicle restarted upon pressing the Push to Start button. The contact stated upon depressing the accelerator pedal, the vehicle jerked, was sluggish, and made an abnormal crackling sound. The vehicle then responded as needed and the contact continued driving. There was no warning light illuminated. The contact stated that while driving at an undisclosed speed and depressing the brake pedal to come to a stop, the vehicle shut off inadvertently. The contact was able to restart the vehicle and continue driving. The vehicle was taken to the dealer; however, the failure could not be duplicated. The contact stated that the failure had been recurring. The vehicle was taken back to the dealer. The dealer test-drove the vehicle and determined that the transmission needed to be replaced. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 100,000.

Filed Jan 24, 2024 · Transmission · 45,600 miles · CA

The contact owns a 2020 Lincoln Navigator. The contact stated that while driving 50-55 MPH and depressing the accelerator pedal, the transmission shifted into neutral(N). The contact was able to veer to the side of the road. The contact turned off and restarted the vehicle. The contact was able to continue driving; however, the failure recurred while driving. The vehicle was taken to the dealer, where the contact was informed that the transmission fluid was 2-quarts low after driving 100 miles. The contact stated that the failure had been recurring more increasingly. The contact stated while driving 75 MPH and depressing the accelerator pedal, the engine revved, but the vehicle failed to respond and jerked. The contact stated that the vehicle also experienced hard shifts while attempting to shift into gear. The contact stated that the vehicle shifted into Neutral(N) while the gear shifter was in drive(D), and the vehicle started losing motive power. The contact stated that the transmission was making abnormal grinding sounds. The contact continued to drive to the dealer however, there was smoke coming from underneath the vehicle and the vehicle lost motive power at the dealer. The dealer diagnosed that the transmission needed to be replaced. The vehicle was not repaired. The manufacturer was notified of the failure and was considering buying back the vehicle. The failure mileage was approximately 45,600.