2010 Ford Fusion Hybrid not "Hybriding" properly.
2010 Fusion Hybrid only uses battery when brake is applied. Doesn't work properly even going downhill at slow speed unless the brake is applied lightly. Word has it CarGuru stated it was because the battery was over ten years old and needed to be adjusted back to less then nine years. TRUE? If so, what's the procedure? Ford service has no idea.
Here is the solution for the fix. Read about how to fix it detail in the post I made over there. https://www.fordfusionforum.com/topic/19361-my-instructions-on-restoring-the-hybrid-ev- function-on-the-ford-fusion-hybrid-approaching-the-89-years-mark/