Raymondjram
Well-Known Member
- First Name
- Raymond
- Joined
- Jun 28, 2020
- Threads
- 19
- Messages
- 581
- Reaction score
- 624
- Location
- Bayamon
- Vehicles
- 2014 Ford Fusion Hybrid LE sedan
- Occupation
- Retired Engineer
My 2014 Fusion Hybrid also has both batteries in the trunk, but the 12V unit is accessed by a removable cover on the left side, which is very visible. It was replaced by the dealer at no cost under warranty after one year. The second one is still working today.Amazing.
The batteries on my Super Duty Power Stroke Diesel trucks die every 22-24 months. Both of them. On both of my personal trucks AND all 18 that we have in our fleet at work. Truck runs fine one day, next day they are dead. No warning lights....dead enough for the truck not to start. 10 volts required to activate the IDM or the injectors wont work.
My wife's C-Max Energi 12v battery died a couple weeks ago. Had to use the physical key to unlock the door, pop the hood, connect jumper cables to the terminals under the hood to provide power to pop the lift gate and access the 12v battery which is right next to the HVB. So close in fact that Ford doesnt even publish instructions or tell the owner where the battery is located. The owners manual just says "see your dealer for service".
Luckily I have the service manuals and am EV trained so I feel comfortable working near the HVB to access the 12v battery. Finding a replacement when the dealership was closed was fun....but we have everything here in Phoenix so I was able to locate a new one and get her car working again.
I dont remember ever owning a vehicle where the 12v battery did NOT wear out eventually.
This is why I mentioned about a lithium-ion version for the Mach-E, which may cost more but last longer. I am planning to get four lithium-ion cells and build my own replacement for my Fusion.
I recommend Ford to add a standard battery connector used in some UPS installations instead of two loose wires in the Mach-E for the emergency access when the 12 V battery fails. Then just sell a cable set with the same connector on one end and jumper clamps on the other end.
Sponsored
Last edited: