Ford Fusion EV power mode malfunction, engine runs instead of switching off at low speeds on Ford Fusion

Some Ford Fusion Hybrid owners report experiencing issues where the engine continues to run instead of switching off at low speeds. This problem often arises suddenly, with some users noting that the high voltage battery can hold a charge but fails to supply adequate power for the electric motor in EV mode. Additionally, owners of Fusion Energi models have mentioned that the low engine use mode activates automatically to maintain proper engine lubrication at sufficient temperatures. It is advised that owners refrain from attempting independent repairs, as Ford is currently investigating the issue and updates are anticipated. To resolve the lack of EV power, many recommend taking the vehicle to a Ford dealer for re-balancing of the high voltage system. Furthermore, some owners have identified potential throttle body issues that could lead to a loss of power, particularly when acceleration cannot be maintained past 40 mph. Replacing the throttle body, which is relatively inexpensive, may help alleviate this problem. It is advisable for affected owners to consult with a Ford dealership or qualified mechanic for proper diagnosis and resolution.