10-Speed Automatic Transmission (10R80) Harsh Shifting, Slipping, Jerking, and Failure

This is the most commonly reported issue, especially in the F-150 (2021–2026) but also Expedition and other 10R80-equipped models.

• Symptoms: Rough/harsh shifts, jerking/lunging, hesitation, slipping clutches, skipping gears, or delayed engagement. Problems can worsen with driving-style changes or accumulate over time.
• Cause: The adaptive transmission "learns" driver habits and sets clutch pressures; mismatches or off-settings lead to slipping. Broader engineering/design flaws include valve body issues and (in related cases) CDF drum bushing displacement that damages seals and causes pressure loss. Dealer resets or Forscan adaptive table clears sometimes help temporarily, but many require full rebuilds/replacements (costs $10,000+).
• Affected: Widespread in F-150; complaints span 2021–2026 (lawsuit evidence notes defective parts used as recently as 2023). Hybrids and heavy-towing trims are hit harder in some reports.
• Recalls/Legal Action: No broad recall for the shifting itself, but owners report Lemon Law claims. An ongoing federal class action (O'Connor et al. v. Ford Motor Co., Northern District of Illinois) alleges Ford knowingly sold defective transmissions without adequate warnings or fixes. It survived a 2026 dismissal attempt; claims include breach of implied warranty of merchantability and Massachusetts consumer protection violations. The case targets 2017–2020 F-150s but notes the defect continued into later years; it is proceeding toward potential class certification (no settlement yet). Separate older DPS6 transmission suits exist but are mostly pre-2021