jake1110

Dang, wish I knew it was as simple as using an ODB2 scanner. I was convinced I'd need a better scanner to do this. Regardless, I was fine with paying just to get the functionality back. I get about 44mpg on my 24 mile round trip work commute. I had to make a 300 mile round trip drive over the weekend and got about 40mpg, which is perfect for me. This is pretty much what i could get back when I first bought the car. I can do even better if I hyper miled a bit with it. I haven't noticed any adverse effects thus far. It feels so much better to drive it now. Given how long the older NiMH Prius batteries seem to go, I'm not too worried about it dying anytime soon. If I noticed a diminished amount of power, I'd consider changing the year setting back in the computer. So far though, it's like the car is new again. I bought my car one year used and since having it, this is the only "problem" I've had with it. It's just been regular maintenance for me, very pleased with it.

For those interested. This post shows exactly how my pwr gauge appeared before getting the battery reset. This one isn't mine, but mine did the exact same thing. http://fordfusionhybridforum.com/topic/12638-wont-run-in-ev-mode-ice-kicks-in-immediately/?p=109015 Glad I found this community, because now I plan on keeping this car quite a bit longer than before.

It can definitely accelerate on pure EV mode up to it’s 47mph limit. Typically, how I drive it is to get it up to speed on gas, then use EV to keep it going steady at that speed. It’s working very well for me again like it used to in the past. Sometimes in stop/go traffic I’ll keep it in EV which is something I couldn’t do up until today. Before I took it in, the EV green line basically sat at the very bottom of the power gauge. Just tapping the accelerator would cause the gas engine to come on. About the only thing I could do on EV was idle and maybe ever so lightly, barely tap the accelerator and it would move in EV. One of the more annoying things was when it was colder out I would hit the interstate in the morning, the engine would warm it. Then, as I got to my exit ramp and as I’m braking, I’d go into EV mode for a short while, but as I was reaching the end of the ramp, the gas engine would turn on briefly, then immediately turn off and it would go back to EV at the stoplight. The engine constantly came on and pushing the accelerator had a delayed reaction. It was MUCH worse back in winter. Today, it’s 90 out and even though the car would be completely warmed up, it still wouldn’t stay in EV other than idle. The actual line item on my bill reads “RESET BATTERY LIFE TO 1 YEAR USING IDS TOOL.” I was billed $125 for this. I’m sure there are cheaper places out there but I’m just glad they got it done correctly and knew what they were doing. Here's a picture of it, it's a bit blurry as it was super bright and i was also trying to get through traffic while taking it.

I just got it back and it worked!!! As others have described, the EV meter now goes up several bars and the car runs on pure electric just as it had before. My MPG immediately increased on my trip back as I was driving in 35/45mph zones to get back to work. The acceleration lag that I was experiencing is also gone, which I suspected was related to the output of the battery My work was done at Charles Gabus Ford in Des Moines, IA. They were aware of the issue when I scheduled the appointment. This has definitely made my day as I actually thought my battery was nearing the end of life. I know it's old, but it's amazing how far my car can travel in EV again. I have 152k miles on it

My car is at the dealer today and I'm quite optimistic about it. When I mentioned the setting 1 year in personality settings, the service manager replied "Oh, the HVB reset." So in my case, the dealership actually knew about it which surprised me because there aren't that many 2010 FFH's around here. I needed to get the Takata airbag recall taken care of, so figured I'd see if they knew of it. Can't wait to get the car back and test out tonight!

This is fantastic news! I suppose I'll have to schedule service and if they can't figure out how to perform this fix, I'll have them contact Fairway Ford. If the local dealer can't/won't do this for me, I may just get really ambitious and take a drive up north...though it might be like a 9 hour haul.

That certainly would make sense as to why all 2010 models are suddenly seeing this issue, while we haven't heard from 2011 or 2012's. It will be interesting to see if the 2011's start to do the same thing. If this is an actual design that was put in place, hopefully someone will share the necessary information to override the setting. I assume it was designed this way to prolong the life of the battery at the expense of performance.

I haven't yet, but received the airbag recall notice last month. Last winter my 12v battery died and I changed it for the first time and it idled a bit weird for a while but that was resolved. I should also note that my car has never sat unused for 30 days. At most, it's went 20 days just once and that was in my garage. Otherwise, it's been continually used. Not sure if I really have any other options, so I'm just dealing with the weak HVB. It's been in the 50's here and I haven't gotten any pure EV driving. When I'm braking coming up to a light, it goes to EV mode, then, right before coming to a complete stop, the engine turns on briefly and finally, once I'm stopped, it goes to EV. It's really bizarre and definitely something that hasn't happened before in my car. Immediately after I take my foot off the brake, it runs the engine.

I too am having issues with all of the above on my 2010 FFH. I just crossed 150k miles last week. The car itself was originally sold in late 2009 so it's nearing 10 years old. My car has reduced acceleration power in EV mode and will only use EV mode when stopped. EV acceleration is near non-existent. I also have the delayed acceleration issue, which I'm sure is directly related to the reduced EV power. I'm in the Midwest and after several warmer than average winters, we had a brutally cold one and the acceleration lag seems exacerbated by the extreme cold. It's unfortunate as I've had zero issues with this car. It's ran so well for me. I think I'm going to hold onto it for another year though and hope the battery doesn't fail. At this point, I'm not really wanting to sink any money into a replacement battery, but would consider it if there was a total failure. That said, this is the end of the line of Fusion's and I think I'm going to look for a PHEV after this with a decent hatch. I've heard the 2020 Escape will have a PHEV variant, so I'm watching closely