2026 Ford F-150 Hybrid Transmission and drivetrain Problems

“I have a 2026 F150 3.5L Twin-turbo ECOBOOST Hybrid King Ranch. I have experienced the following behaviors: (1) rough transitions when climbing grades; (2) rough transitions when braking hard/coming down grades; (3) 10-speed transmission - electric motor slippage during de-accerelation (especially when Adapted Cruise is activated); (4) transmission seems to have gear hunting at low speeds/stop and go; and (5) harsh shifts/unpredictable downshifting with adaptive cruise. …”

“When shifting into reverse to pull out of my garage, with my foot firmly on the middle of the brake pedal, the truck suddenly accelerated, squealing the tires until I pumped the brake to make it stop. It was a very frightening experience. I drove it around town, including stopping and reversing and could not replicate it. It happened on a cold engine and it hadn’t been driven in three days. I’ve seen several other reports on Facebook and online of the same thing happening to other people. This is obvious a dangerous problem that needs to be addressed by Ford!”

“First started having problems with 4x4 randomly engaging and then shortly after that a complete loss of braking capability. Warnings of Park Brake Fault, Check Brake System, Reverse Brake Assist not Available, Check Brake System, Park Brake Limited Function, Pre-Collision Assist not Available. This happened at approximately 240 miles on a new vehicle. Took to Ford Dealership, after about 5 days got the vehicle back and drove it about 4 miles before all the brake system lights came on again and another complete loss of braking capability. …”