2019 Ford Fusion Hybrid power train problems

“2019 Ford Fusion Hybrid SE. Vehicle experienced a “Stop Safely Now” warning with hybrid system shutdown, occurring both while driving and while parked/idling, causing jerking symptoms. This puts driver and other roadway users at risk, as loss of power/propulsion can occur without warning while in motion. Vehicle also set a P0073 (ambient air temperature sensor circuit high) fault code. The ambient air temperature sensor was replaced (Ford part numbers AU5Z-12A647-B / FC4Z-12A647-A) but the underlying issue has not been fully resolved and diagnostics are ongoing. Vehicle also had a prior transmission replacement (January 2023). Vehicle has also had extreme, unresolved electrical issues: fuses repeatedly burning out, lights burning out, two horns replaced due to failure, backup camera display turning blue/failing, and dashboard warning lights randomly illuminating. The dealership has confirmed electrical issues are occurring but has not been able to identify the root cause despite inspection. Issue has been confirmed/reproduced by a dealer. Vehicle and components are available for inspection upon request. Exact onset date of symptoms is UNKNOWN, but warning lamps…”

“Backup camera keeps going blank with a blue screen also back up camera stays on for a few seconds while driving then the screen turns blue having to do a soft factory reset to the system. Transmission shifts prematurely or kicks down weird. Shifting from park to drive makes a klunk and clicking sound not smooth or quiet at all.”

“The contact owns a 2019 Ford Fusion. The contact stated that while coming to a stop, the contact heard a loud sound coming from the engine compartment. There was no warning light illuminated. The vehicle was taken to an independent mechanic, where it was diagnosed and determined that the flex plate, torque converter, and front pump had failed and needed to be replaced. The vehicle was not repaired. The manufacturer was made aware of the failure. The failure mileage was approximately 75,000.”

“Occasionally, the vehicle will drive in reverse when started and the shifter knob is turned to Drive (forward). This has occurred at least 5 times and the dealership has not been able to replicate the issue. So in their minds, it is not an issue. On one of those instances we noted that that shifter did not have any mode highlighted even though it was put into Drive. There were no warning lamps illuminated, no system messages. The car simply started to reverse when taking the foot off of the brake. The car had to be turned off and restarted multiple times to get it to go forward. This can be dangerous as one could inadvertently strike an object or person that is behind the vehicle.”

“The contact owns a 2019 Ford Fusion Hybrid. The contact stated that while driving at an undisclosed speed, the contact heard a rattling sound coming from the transmission. There was no warning light illuminated. The vehicle was taken to the dealer, where it was diagnosed that the transmission had failed and needed to be replaced. The vehicle was not repaired. The manufacturer was made aware of the failure and referred the contact to the NHTSA hotline for further assistance. The failure mileage was approximately 105,254.”

“The contact owns a 2019 Ford Fusion. The contact stated that while the vehicle was parked, the vehicle stalled. There were no warning lights illuminated. The contact took the vehicle to an independent mechanic, where it was diagnosed that the flex plate was loose. The vehicle was then towed to a dealer, where it was diagnosed with a cracked flex plate. The vehicle was repaired. The manufacturer was made aware of the failure, and a case was filed. The failure mileage was approximately 56,660.”