2023 Ford Bronco: sudden loss of power

Filed Mar 5, 2026 · Electrical, Engine · NY

The vehicle experienced recurring electrical system failures beginning in December 2023. The vehicle intermittently would not start and on several occasions lost power unexpectedly. The vehicle was taken multiple times to an authorized Ford dealership for diagnosis while still under the manufacturer warranty. The dealership repeatedly reported that no issue could be identified despite the recurring electrical malfunction. The vehicle battery was replaced more than once within three years, however the underlying electrical issue persisted. In August 2025 the dealership instructed that the vehicle remain at the service center for extended diagnosis. The vehicle remained at the dealership for more than 40 consecutive days before being returned on October 8, 2025. Because the vehicle intermittently fails to start and has experienced electrical system malfunction, this creates a potential safety risk if the vehicle stalls or loses power while operating in traffic. Additionally, the vehicle currently has two outstanding manufacturer safety recalls that remain unresolved after nearly three years of ownership. This complaint is being submitted because the defect remains unresolved despite multiple repair attempts while the vehicle was under the manufacturer warranty.

Filed Feb 23, 2026 · Transmission · VA

Automatic 10 speed transmission has unpredictable shifting from 1st through 3 gears, offten with long lags between shifts, losing power temporarily, especially from 1st to 2nd gear, and harsh shifting. Sometimes, the 1st - 2nd shift lag happens upon acceleration during merging or in an intersection and that loss of power is critical, requiring an adjustment in throttle position, and when 2nd gear catches, then there is too much power. It is unpredictable. The Bronco has about 35K miles now, but this has happening since day 1. Twice in dealer, twice the tech noted it, and twice the only solution was to clear the adaptive shift control memory. Does not fix the issue.

Filed Jul 27, 2024 · Transmission · MS

3 separate times while driving on the on the interstate doing between 70-75 mph the vehicle completely lost power and an alert was displayed saying “Powertrain Malfunction”, the most recent incident was 07/26/24, before was 06/16/24 and 06/22/24. The vehicle speed dropped down to 35-40 and wouldn’t go any faster, and we had cars behind us, this created a major safety issue for me and my family. We had to pull over on the interstate, turn the car off and back on. We took it into the Ford service department, they said nothing was wrong with it and claimed they reset the computer.

Filed Apr 17, 2024 · Electrical · WI · crash

Loss of power

Filed Feb 7, 2024 · Engine · AL

I was driving uphill in a neighborhood going about 15 mph when my Bronco suddenly lost power. I was not able to restart and had to manually restart the truck using the fob to ignition method. It started back up, but a terrible sulfur smell was coming from the vehicle. I brought it into our nearest Ford dealership and they claimed there was nothing they could do because no code was reported from the truck. I continued to drive it for another day and the check engine light came on. My Ford Pass relayed a message claiming that the issue was the catalytic converter. I took it to my Ford dealership who claims this could take months to fix because the parts are on back order. My 2023 Ford Bronco, 2.7 liter V6 had less than 6k miles.

Filed Nov 22, 2023 · Engine · GA

Engine service light came on indicating reduced power/power failure. Called Ford dealership and they said to bring it in asap. After diagnosis the Ford dealership said there was a problem with the wastegate. The dealership has no eta on when the part will be available.

Filed Nov 14, 2023 · Brakes · TX

Two different times, my brakes have lost power. Both times were at slower speeds while coasting. The first time a car pulled out in front of me (about 50 feet ahead) and even though I was only going about 15 miles per hour I was barely able to stop in time. When I hit the brake pedal it felt rock hard (like when you pump the brakes with the engine off). The pedal did not go to the floor or anything like that. It stayed high in the stroke. No ABS sensation or warning lights. The next time I hit the brakes they worked normally. I couldn't reproduce the problem until about 2 months later I was leaving work and was pulling up the street at about 5 miles per hour when it did the same thing. It was almost flat ground and It was all I could do to press the brake pedal hard enough to stop in time. The symptoms were the same as the first time. The moment I hit the brake pedal again, all was normal. The weather was warm both times. The dealer cannot reproduce the problem