Ford Fusion Hybrid Battery Age Sensor

The same thing happened to me in my 2010 Fusion Hybrid with 65k miles on it a 2 months ago! The EV Power indicator gauge doesn't show a bar anymore. It used to show at least 2 green 'bars' and kick into quiet EV mode under 40mph. Now the car constantly idles at a stop, ruining the MPGs [from 38 to about 28 now]. Looks like an easy fix or programming, I wish I could do. ~ LS

Do you have contact info for the dealer and service rep. that did this? I'm aware of several 2010 FFH owners (myself included) that are having the same problem, but our dealers have no idea how tofix it.

I am still working with my dealer - I had to get my FFH after they had it fo 3 days [without giving me a loaner car!] and still no answer. I have it scheduled Wed with a loaner car and I am going to stand my ground and refuse to pay for the diagnostic charge of $180 since I needed my car the last time and they couldn't help me out with one.

I'm dying to know if this really works!

Yes, that fixed it. We had to let the car sit for a few hours, then it reset and worked properly - as if it never happened.

What fixed it? Just let the car sit for a few hours? Mine never resets itself and no EV mode. Am I missing something?

Guru5TQM: Give us an idea where this dealer of yours is. Apparently they're the only one in the country, including the Ford Customer Service (SIC. What a joke they are) that seem to know what they're doing.

I'm with Larry, but ask that you please post the name and phone number of the dealer and the name of the service rep that fixed your hybrid. They might be thre only ones in the country that have actually figured this out.

HI - Yes, the tech finally fixed the prob! He said the Ford Hotline had him run through a ton of codes and tests. After all said and done, the date was 'reset' to an earlier time. I don't know the exact way/how, etc [I would have done myself - if anyone knows, LMK!] So the EV/battery date was tricked into a younger version and all works well. The car is not idling at a stoplight anymore - thank goodness because I'm getting great gas mileage again - 28mpg to 38mpg]. Chat with Brewster Ford in Brewster, NY.

Thanks GuruL5TQM . My Fusion (2010) goes in EV mode at/before stops but as soon as I let the brakes go it will switch to gasoline.As far as battery age goes it might need dealers special software to trick it.I reset the computer by disconnecting the battery but no change.I'm in Ontario Canada and it is still cold outside. Will let you know when it worms up....

Would love to hear more about this if your mechanic ends up giving you the specifics on what he did. I just bought a 2010 at auction, as luck would have it, and find myself stuck with the same issue. Otherwise, I love the car, but my purchase timing is frustrating, to say the least.

It was a bit warmer the other day here in Ontario Canada and the car was a tiny bit better at least it rolled in EV mode. As soon as I touched the gas ...switched to gas. There is some hope for the summer (maybe).

I'm pretty certain every 2010 is facing this issue(I imagine the 2011's will see in a year as well). I've had my 2010 Fusion for 8 years and it went from full battery power available, to a minuscule amount seemingly overnight. I have 150,000 miles on mine and I've found that others with only half the miles are experiencing the same issue, so I believe it's a deliberate programming choice Ford made. If anyone is still actively trying to figure out how to reprogram the computer that controls the battery, please keep us updated!

I have a Fusion 2010 HY. that has the same problem that above, but the car turns off when driving some times, and the dash show the red Stop Safely Now message triangle, so i'am not sure if this it's the samebattery age problem or another one. Do somebody have had experience this too..?

This it's the message and icon thet shows when the car turns off by it self.

The "stop safely now" message is not related to the HVB battery age issue. Quite a few of us on the Ford Fusion Hybrid forums have noted the HVB issue and not a single one had that message. That said, we've had numerous reports that some dealers are able to program the car's computer into thinking it's a new battery. I plan on having this same procedure done on my car. There are no service bulletins for this issue either.

Yes you are right the stop safely now message is fixed after I fixed the easy fill issue the valve was stuck open . Than I disconnected the HV battery and the 12v battery for about 15 minutes that reset the age and the computer at the same time now it is much better drives like before in green mode. Use safety gloves for high voltage up to 1000volt when you disconnect the HV battery.

My dealer refused to do this procedure as it wasn't "ford recommended". Boucher Ford Menomonee Falls Wisconsin. I will try a different dealer in the area.

Programed obsolescence. After my dealer fixed it, they repeatedly asked Ford why they shouldn't do it - the company according to my dealer "Dodged the question"

My dealer did it in Des Moines, IA. They knew exactly what the issue was and reset it to 1 year for the HVB reset. My car drives exactly how it used to now. It easily gets me well over 40mpg in town when it's warm out and can drive in EV mode up to 47mph again. It also got rid of the "acceleration lag" I was experiencing.

Here is the solution to the fix, I posted in this forum over there. You can read the details on how to fix this yourself. Relatively easy to do. https://www.fordfusionforum.com/topic/19361-my-instructions-on-restoring-the-hybrid-ev- function-on-the-ford-fusion-hybrid-approaching-the-89-years-mark/

Trying to do this but have to wait for an admin to approve my forum login on forscan. Laammeee

THANK YOU VERY MUCH ALLEN...Got an ELM adapter, FORScan software. Downloaded the drivers for the adapter. Followed your instructions on restoring the hybrid ev function. I set mine for 5 years (is as long as I've owned the car) Like magic, I have E.V. mode again. And can hypermilage again. I like my car again. Like seeing 40-60 mpg for a few mile trip doing errands. Less impressed with Ford now though. Had thought about HVB replacement or re-balancing. Decided against it because of cost. Nothing wrong with the High Voltage Battery other than how Ford programmed the BECM. Get the word out. Let other FFH owners know about this issue.

I just went to Brewster Ford in Brewster NY and the Service Manager refused to adjust the battery age. They knew exactly what the issue was but refused to do it. Said it was a liability for them to do it. I also tried the solution noted on the Ford comment site. You buy a device that hooks into the electronic port under the driver side dash, then hook it into a laptop computer. To make it work you need to download software. When I went to the website to download the software, my Norton anti-virus blocked the site. Said it was a known site for malware. I stayed away. Unfortunately, I still have the problem that everyone else is having with the 2010 Fusion Hybrid battery. The thing is the Prius uses essentially the same battery technology and they get 250,000 miles out of their batteries. Ford is just being overly cautious. Mostly what we need is someone with a $5,000 fancy scan tool to reset the battery age on the car computer back to year 1. Nickel Metal Hydride batteries are very reliable and safe. I could not fine a single instance of it catching fire, which is Ford's concern.

I did the age reset as Allen with the Forscan and an OBDII it works fine for now I have the old gas saving and EV mode as before. If you live in the GTA I might be able to help you . Contact me tomkun2008@gmail.com

I got it to work. I used an old computer that I was going to throw away so if I got a virus, so what. I did not get a virus. I also used the slightly cheaper OBD connector: FORScan OBD2 Adapter, bbfly VINT-TT55502 ELMconfig ELM327. $18.97 on Amazon. Worked fine. I assume it will take a little driving for the car to retrain itself, but a 23 mile drive on back roads under 45 mph mostly, I got 46 mpg. (I use cruise control a lot) The engine did not automatically kick in after I took my foot of the brake. The lag in the transmission kicking in from a stop is also gone.

Thanks Allen! I just did the forescan OBD2 fix myself, works like a charm!

Is there any way to tell a date on this battery to know if it has ever been replaced?

I just did the FORScan “fix”. It worked at first but then went back to running on the engine. I set the age from 10 to 1. After test I changed it to 2. I am letting it sit overnight and will try again tomorrow. My car is a 2011 with 81,000 miles on it. Battery charged normally and all systems seem to be working correctly. While connected with FORScan I found an error in the ABS system that I need to figure out.

Follow-up. Took car to Ford Dealer today. They upgraded several “modules” that should help the mpg. Upon leaving the dealer my EV mode still does not work. I need to check to see if they changed the battery date. If not I will try that again. Any new information about this problem??

Had to tell my Ford dealer about the battery age change...they reluctantly did it and now my 2010 is running again as a hybrid.

I am not seeing the "Red Stop Safely Now Message Triangle" message, but rather the single/double orange wrench lights have been coming on from time to time. Last night in the dark after a 40 minute drive down the highway, the car started running with less and less power. I was crawling along at 10 mph and the HV power gauge dropped virtually all the way to zero. I plan to take it to my local Ford dealer to get some advice. Hopefully I can talk them into the reset time solution mentioned earlier.

GuruNSV12, it is your throttle body. I replaced mine by myself. it's an easy part to replace, $70 part from the dealer and 1/2 hour. If the dealer replaces it, they will charge you a few hundred I believe.

Allen, I went out the next day and it started up fine. I don't think it is the throttle body.

I also did the Forscan fix put the battery back to 5 yrs.and it drives in EV mode now as it should and changed the throttle body with one from Amazon but still getting the monkey wrench at higher speeds and on hot days only.

Allen, thank you so much for posting the battery age reset instructions. My 2010 Ford Fusion Hybrid with 19,784 miles was doing the same thing everyone else is experiencing. Being a senior citizen I was afraid it would be big bucks to repair the car. I printed out your instructions and took them to the local Ford dealer. The hybrid tech checked my car out and then did your reset, the car works perfectly again. Only $106.96 for the repair. The hybrid tech floats between Ford dealers here in North Georgia and Eastern Tennessee and is very happy to have this fix for his rural customers.

ken10fusionhy, can you name the tech or the dealer? I am in NGA/Chattanooga area and would like to take my 2010 FFH for this repair.

How can we get in touch with this tech? The repair was just made by Brewster Ford this year and now it's running back to the gas engine - NO EV mode!

I printed out Allen's instructions and took my car to Chatsworth Ford 2790 Highway 76 Chatsworth, GA. 30705 Service 706-503-1647 Service advisor is Perry

We were told by a local Ford Dealership that Ford inc does not have a fix but are working on it. I find that hard to believe.

I just did the fix mentioned above...this was my mileage on the way home from work today. The lag is also gone when pulling away from a stop.

I changed the battery age from 8 years to one with no change. But we have not seen mileage below 35. We had the car in the Ford dealer and were told Ford inc knows about the problem and is working on a solution. Does anyone know about the fix that is coming?

Ford posted this on Oct 3. My local Ford dealer reviewed OASIS for updates on the post. None posted by Ford yet, so no further info available. I plan to reset my vehicle age myself because my dealership won't without authorization from Ford. My concern is what may happen down the road because the ICE is actually started by this battery pack.

I changed the battery date from 8 to 1 year with no noticeable change. I too am waiting on Ford to issue a TSB and fix. There has been no issue with starting the ICE. If the EV battery starts the ICE what does the 12 volt battery located under the hood do?

Purchased an OBD, downloaded FORScan, reset battery age to 1 per Allen's instructions, hybrid function restored . Happy camper. Still, wondering what future issues this may cause. Hope to learn Ford's recommendation in their OASIS report release sooner rather than later.

Had the same issue - 2010 Fusion w/148000 miles, lucky to live at the border, I went my mechanic in México and after re-balancing the battery and "apparently" changing the age of the battery, the issue did not resolve, nevertheless, he took the car back again, dismounted the battery, had to clean all the terminals from the cells as there was some sulfate accumulation, then he tried to re-balance the battery with his own scanner, did not take it, after that he used the ford program and the battery came OK and changed the battery to 4 year old (he mentioned that getting it to one could stress the battery as it is 9 years old. So far, after a week, the car has performed perfectly, even better than when I bought it (used, a year ago) - The car takes off on battery alone even on slight inclines and the height of the green battery bar has almost doubled.

I paid around $350 for the whole thing - - So if you live in San Diego I can direct you to this mechanic in Tijuana

Just performed this rest myself. Cost was $25 for the scanner and $10 for a Forscan software license. total time to perform was less than 10 minutes and could probably done is less than 5 minutes after doing the first one. My car is now back to normal EV mode operation. This fix requires no mechanical or special computer skills

I performed the reset on my 2010 Ford Fusion hybrid using a $18 OBD II scanner from Amazon and the Forscan software with free two month trial license. My EV is working perfectly again.

Hi, anyone give me the OBD type and the Forscan website And give the procedure to do that Please contact with me on Abdullah.ah210@gmail.com

https://forscan.org/download.html https://www.amazon.com/gp/product/B07S7W14X9/ref=ppx_yo_dt_b_asin_title_o01_s00? ie=UTF8&psc=1 There other scanners that will work, This is the one i used.

This is the procedure I followed (credit Allen): https://www.fordfusionforum.com/topic/19361-my-instructions-on-restoring-the-hybrid-ev- function-on-the-ford-fusion-hybrid-approaching-the-89-years-mark/

I also followed the instructions to reset the battery age to 1. It worked for me and the car is running in EV mode more than it has in the 2 years since I bought it used. I am concerned about ruining the battery and may change the age to a higher number like 4-6 to protect the battery.

I also followed the instructions to reset the battery age to 1, originally set to 0. It worked and the car is running in EV mode again. What is the OASIS report and where do I find it?

I'm so glad I found this site, I was about to buy a salvage replacement battery. We were noticing lack of hybrid mode about a year ago. Vehicle is 2010 FFH 118k. Car was averaging just 27MPG. Did the fix yesterday with ForScan. Set to 1. Car is now back to normal. If not better. Acceleration lag is gone too. I took this to the dealer over a year ago (Broadway Ford Green Bay, WI) and after 2 days they said HVB needed to be replaced at a cost of $6300! This is a shame Ford has done this and won't clearly state the reason. Anyway thanks to all who have worked to get a solution to this issue.

I too had this issue and was told by my dealership it was probably a wiring issue which would 'probably' result in additional diagnostics time. Oh, and they could get me in for 4 weeks. I was going out of town for the holidays and was tired of how the car was functioning. I already had a bluetooth OBDII reader, so I downloaded the recommended software that I could reset the battery age with. My FFH was actually manufactured in the summer of 2009 and therefore this issue popped up in the late summer/fall of 2018. I ran for two years trying to logically sort out what could be happening - at one point it seemed both the battery and transmission might be failing. So about a week before Christmas I finally started the software and connected to my FFH, navigated to the battery age setting, set it back to 1 year old, turned the key to off, waited for a bit while the car hummed, clicked, and thumped from somewhere in the back, and then took out for about a 20 mile drive (combined city highway) in 35 degree weather. It took about 10 minutes to change the age and my mileage went from around 25 mpg in town to 38 mpg on my initial test drive. I now routinely get high 30's to low 40's around town in the winter again. I have roughly 2500 miles on the car since I updated it wand 207,000 miles on the car. The hybrid mode is working as expected and the transmission is back to normal as well.

I have this issue too. I made an appointment with my dealer, was told that they needed to do a 2 hour diagnostic. They confirmed it was the battery, and since I'm in NY its theoretically under warranty so I wasn't charged. Ford refuses to replace it at this time, so I filed a complaint with the NY AG office. If you're in a CARB state and have a 10 year warranty you should get it documented with your dealer, because this seems like its got class action all over it. I'll post back if I get it resolved because this isn't right. We might need a critical mass to complain to dealers and attorney generals to get this to be made whole. I think if/when the 2011s start getting this it'll help bring more attention

Having already performed the reset and restored the car to a normal functioning EV mode again, I don't see the point in any legal action that would take years to resolve in hopes of gaining pennies on the dollar in terms of time and dollars spent. Personally I am done with Ford and will move on to another brand when the current car does poot out. Good luck with any hope of a Ford solution and eternal thanks to Allen for resolving this issue for us.

ldubya46 - I agree with you for myself - I am not really interested in anything for myself in a class action. My car is working as expected. I just checked my mileage since I reset the battery age and am now getting around 35 mpg - this is temps in the 30's in Michigan with a wife who wants the car warmed up before getting in... I also checked a similar number of refills before the reset and I was getting around 28 mpg. My thought is that there are people who may have paid for a new/refurbished battery or took a bath when they decided to sell or trade-in their car. They have been damaged and should be made whole. However, there may not be enough units sold to start a class - a little under 37,000 units sold. I would just like Ford to acknowledge the problem and offer complimentary age resets.

We are a used car dealer in souther CA and just bought two 2010 and 2011 Ford Fusion Hybrids. Both were averaging 25-28 MPG which was not acceptable to us. After research found this site and we immediately download the Forscan program along with ordering the special ODB II from Amazon. Once we connected to the car computer it took less than 1 minute to reset the age of the battery. The EV works instantly again and already we are getting 40-43MPG. Amazing. Local idiot Ford dealer were clueless of such issue with these 2010-2011 Hybrids. Go figure.

Hello all, First, I'd like to thank everyone who's posted here. I've been having the exact same issues as other writers, so I won't spend time with that aspect of it. I've had my 2011 FFH to the local dealer 3 times now - 2/2019, 10/2019 the problem for me has been getting progressively worse for a year now - on both of these occasions the dealer's service department told me (as others have been) that I'm imagining the problems. Huh - imagine that - I've been driving the car since December 2010 when I bought it new; currently about 124K miles. And they know how my car drives better than I do. Frankly insulting. So I started researching the problem and found this, among many sites, describing the issue and the apparent cure. So on 2/6/2020 I took the car back, "armed" with this and other website references, and asked them to put the "cure" in place. Seemed simple. NOT. They did, however, FINALLY "verify" (and they put it in writing on my invoice) the malfunction. Well, baby steps. So now what I think is the "new" information. The service guy contacted me and told me very simply that they'd contacted Ford, and, wait for it, FORD DIRECTED THEM THAT THEY WERE TO DO NO REPAIR OR WORK WHATSOEVER ON MY CAR!!!! Yes, the manufacturer forbade the dealer to do anything to try to fix it! How messed up is THAT? The dealer did, however, give me some information (whether he was supposed to or not, I suspect he WASN'T) about this. FORD KNOWS ABOUT THIS. SSM 48238, "effective date" 10/3/2019 (four months ago as I write this). I've uploaded a picture of the document I was given. The dealer highlighted the text "Do not attempt repairs at this time. Engineering is investigating, monitor OASIS for updates." Yeah, right - I'm supposed to call the dealer every week and ask them to check OASIS for me. That's great. Thanks for the gumball. So - we have malfunctioning cars (and for me, I feel that it's a SAFETY issue as well - my car's acceleration, particularly on a hill, is now awful - this powertrain wasn't designed to run on gas (mostly). I'm experiencing significant "throttle lag" that forces me to plan even farther ahead if I want to accelerate; if I were in an emergency situation I may not be able to avoid an accident). Drivability is awful. And Ford, the designer and builder of this car, has been "working" on this for AT LEAST four months. There's no indication on this bulletin of when (or if!) they will issue a solution to dealers. So broken car, Ford doesn't know what to do after 4 months of "effort," and they specifically tell dealers DO NOT WORK ON THE CAR. Catch 22! If I want to sell/trade it, my value is significantly damaged. Now, if I do this fix on my own, or find an independent service place that is willing to do it (not being beholden to Ford as a dealer is), first I have to pay for Ford's mess up (actually the least of my concerns) BUT - what I AM concerned about is that if something further occurs "down the road" and this reprogramming step isn't the whole solution, Ford WILL come back and deny any claims - "you did an unauthorized repair." Didn't these people learn ANYTHING from the Pinto debacle??? I've written Ford a letter (probably a waste of time), contacted "Customer Relations" - utterly worthless (oh - phone only, no email; rep: "I am not authorized to 'escalate' this further," and she couldn't even find any reference to the document above even when I gave her the number). I've also notified NHTSA because I DO feel that this is more than just crummy gas mileage. It IS a safety issue. I've also contacted one of our local TV stations in hopes that they'll "tilt the windmill" and get further with Ford. And I'm going to post on as many sites as I can to let people know that Ford does know about this. GuruP56HD has it right - we're getting shafted (I want to use a stronger word but won't) and I just want Ford to come up with a solution. Far too few of these cars were made, and I have no desire to get into a lawsuit that will drag for years, and at best we'd each get a few bucks; the lawyers will get richer. If they don't respond in the next few weeks my plan is to have an independent apply this fix, get it running ok, and then sell/trade it. I know that's just potentially passing the buck, but a dealership trade/buyer is just going to chop it down for parts - little residual at 10 years and 124K miles. Doggone shame - loved the car up to this point. I've bought Fords for the last 40 years. NEVER, EVER again. They all have issues, but they won't get my money again.

Purchased my FFH new in 2010. At 8 years of age, the high voltage battery stopped doing anything like everyone else is reporting. Ford appears to program the high voltage battery computer to do this on purpose. Living in CA, our state gives us 10 years warranty on the battery. My battery warranty is due to expire in several months, and I started becoming concerned about getting my battery replaced under warranty. Ford is VERY reluctant to do this due to the cost. I've been working with an exceptional shop foreman at Gosch Ford in Escondido, CA. Vince is his name. He tried working with the so called "engineers" at Ford. They gave him wrong information. Then 2 days ago, I found this post. Read it very carefully, took notes, and yesterday went back to the Ford Dealer here in town. Vince was thrilled to get all this information too. Previously he had reprogrammed the battery computer to 1 year. For some reason nothing changed. Nothing improved. This car has about 68,000 miles on it. Yesterday he reset the battery computer to 0 years. At that point, EVERYTHING changed. We took the car out for a test drive. EVERYTHING was back to the way it was the day I purchased the car. The complete hybrid electric system is working perfect. The transmission has stopped acting up. All the hesitation is gone when you accelerate from a full stop. The fuel mileage has improved. So to all of you out there having problems, read this entire post above carefully. Take notes. See if you can find someone at your local Ford Dealer in the service department that will assist you with this problem. The problem with the battery is fixable and worth the effort. My Ford Dealer did NOT charge me for the initial testing because they couldn't fix the problem. They did not charge me for any of the attempted fixes. They did not charge me for the fix that finally took care of the problem. This is the BEST car dealer I've ever been to in over 50 years of driving. Good Luck with your repairs.

GuruRSVT6. I understand your frustration and reluctance to try the unauthorized fix but it does solve the issue with the battery. I've done mine and I can love my car again. Will it cause problems down the road? Who knows? The car before the date reset was mediocre at best but it runs as should now. I will take that over the previous status for what ever time it allows.

Hi ldubya46! I actually totally agree with your thoughts. My plan is as follows: I wrote to Ford and tracked the delivery. If I hear absolutely nothing from them in what I think is a reasonable time (I'm thinking about 2 weeks, as I provided phone number and email) then I will go to a local independent shop that I've used several times and ask them to do this fix. Unfortunately my local Ford dealer is running scared (unlike the excellent shop that 1GuruDAL has in CA) and since Ford forbade them to touch the car, I don't have that option. I think that using a "reasonableness" standard for a major corporation's Customer Service to at least get back to me provides me with a modicum of defense should a problem arise in the future. Hopefully the fix will also work for me (and it isn't only part of a problem, e.g. something in the CVT, too). It can't stay as it is. At best I have an unsafe, poorly functioning car. At worst I have an unsafe, poorly functioning car that's lost most of its value if I try to sell it. So I agree, if Ford refuses to acknowledge me or my complaint (why should I be different from anyone else that they're also ignoring!) I plan to take matters in my own hands and try the fix. Agree - who knows what will happen in the future, though for me, that future is likely selling it once it works again. Which is sad, b/c it was a great car for years and my son really liked it. But I won't risk that unknown future on him. Thanks for the support!!

I have a 2011 Lincoln MKZ hybrid, same build as a Ford Focus. I experienced the same problems with EV mode not working. Took it to Grove Ford in Centennial, CO because I called, explained the issue to the service advisor of the HV battery date, and the process to change it and he said sure, they could do it. Turns out they loaded patches for the BECM and PCM modules, which did no good at all. Took it back in, and they researched it further, and Ford told them not to change the HV battery date. (Appears they want me to buy a new HV battery...shame on them!) They charged me for the patches and labor, and when I complained, refunded the cost of one patch, $195. (Shame on them again!) I took my car to local auto repair shop along with the programming instructions, and they reprogrammed the HV batter to 1 year, and EV mode is working great! Also, I first called the local Lincoln dealership service dept, and they wouldn't acknowledge the issue or even talk to me about it. That is why I went to the local Ford dealer, Groove Ford, which I will NEVER go to again!

Count me as one who did the self do fix as posted a bit further up in thread (on Fordfusionhybrid.com), with the interface and software. I reset to 1 year, and YES! It worked perfectly for only the cost of the interface (about $30). It is NOT hard to do. Like others, I feel like I got my car back. Going to trade in in a few months, but it will not be seriously devalued anymore. My recommendation, just get the device, use a laptop and cure your car very fast!

I forgot to mention, my Ford dealer played "clueless", but they knew Ford knew about it, and they knew the fix, but wouldn't mention anything. Most dealer will not touch it. FORD - you permanently lost a customer.

Pulled my hair out for months trying to figure out what I thought was a problem but was unsure. Then I discovered this thread. Reads slow at first but described my problem to a tee. Picked up the connector cable (only online), downloaded Forscan and followed the above embedded instructions. Worked like a charm!

Oops, my posting did not work as I forgot to log-in first. Anyhow, I had the same issue with my Mercury Milan 2010. So I followed Allen's advice, resulting in it now shows the age of EVB=1. After turned off everthing, I put the gear into R to see EV was working!!! However, once I put the gear into D, then no more EV. Am I supposed to wait a few hours or a day to get the effect for the D too? Or should I change the age of the EVB to, say 3-6? I appreciate it if you guys would share your thoughts on this strange situation. Thanks.

I see Árpád said this "Yes you are right the stop safely now message is fixed after I fixed the easy fill issue the valve was stuck open" What is the easy fill issue?

In the owners manual we read that with easy fill system ( no cap gas tank) at the pump we fill the tank only until the pump stops than remove the handle slowly until you hear the valve closes. If the tank is over fills and the valve gets stuck than the ECU will give you the pull over safely signal. so no evaporating gases escape to the environment..

Got it. I got the red triangle 3 times yesterday and wondering what it could be...tank is half full so its not that one.

@Etrain1 was your hybrid battery at a very low charge when this happened? I got the red triangle 3 times yesterday driving through the Nevada desert, and each time the hybrid battery was very low on charge. Did you find a fix?!?

was your hybrid battery at a very low charge when this happened? No and have not found an answer yet but looking into it as it happened again today

Hey everyone, I've read the entire thread and I have a question. I've a 2014 FFH with 88,800 miles. Bought it used in May 2019 with 72k on it. I used to put 28--34 miles/day on it b&f to work and I could get, on low traffic days, about 50mpg to work and 38 or so back home. And I was able to maintain that while driving uber. I was averaging 42 MPG for the better part of my first year. However, once the quarantine hit, the car sat for the better part of 1.5 months. Since then, I've seen a steady decline in MPGs over the past l 1.5 months, from 42 down to 40.3 MPG, with erratic charging. Sometimes I'll come out to the car and the High Voltage Battery is almost out, other times I'll come out and it'll be at 1/2. Sometimes while driving, I can get the charge up to almost full, but most times it hovers at 1/2 or below. That's not how it used to be. Am I witnessing a battery deterioration or will the fixes above work for my 2014? Thanks

What does mean the ready indicator is red on Ford fusion 2020?

I changed the age of the battery in the Battery Electronic Control Module (BECM) to 1 year old last year. The hybrid drive train on my 2010 Ford Fusion has worked perfectly since then.

I had this same problem as the car reached 9 years old the EV only kicked in with the brake pressed all the way down. The dealer I normally service the car at had no idea what I was talking about when I told him what I read on line, but I brought to another Ford dealer across town and they reset the battery age for $35 and I am right back to normal.

This is crazy that Ford has this programming error present. Just ordered the OBD device and downloaded Forscan. Can't wait to get my gas mileage back. Same issues as you all described, 2010 FFH, 108k, EV box is nonexistent and ICE is running all the time. Used to be able to drive in EV mode in town with conservative gas pedal usage under 40 mph with no problem. I also have the lag when accelerating from a full stop. Can't wait to have my car back!

Can someone post Allen's instruction on how to do this? The link that he posted does not work anymore as it just takes me to the home page of the Ford Fusion support forum. Thank you!!! My car has just recently started to have the battery FULLY charged and the EV mode kicking on only as the car is in a COMPLETE stop

@Carnell Here is the link. But cutting and pasting it adds a space you need to delete in between the "? app", delete that space and then enter the link. https://www.fordfusionforum.com/index.php? app=forums&module=forums&controller=topic&id=19361 It should take you straight there. Otherwise, you can just visit the fordfusionforum.com site, and go to ford fusion hybrid section near the bottom of the page. the thread is sticked so it stays at the stop for easy locating.

Just a heads up that I found a local Ford dealer that updated the BECM and PCM according to TSB 20- 2142 which fixed the problem on my 2011 FFH. They performed the service under the emission warranty at no cost.

Just went through this today! Thank you for the great thread, it saved me thousands on my hybrid battery replacement! 2010 Fusion Hybrid, 88k mileage, same symptoms. Found a company called Pro Auto Programming here in Phoenix AZ. Mobile tech came and reset the computer and instantly the system worked fine once again. $185 and well worth it!

My dealer did the update (TSB 20-2142) with no improvement in mileage. I then bought an ELM scanner and ran FORScan. The result showed ALL items in the BECM Module configuration list with error codes (general error for battery age, "incorrect value or not configured" for all other values along with numeric codes). I can't understand how this could be if the update was properly done. Can anyone with more expertise help me to understand this? Regardless, I reset battery age to 1 with no effect. Should I also reset all other items to "Module Configuration"? Another option is to reset the BECM to default then change battery age to one year. However, as I am new to the world of car computers, I don't want to cause more harm.

Will the dealer not replace the HV battery if its still under warranty? Or does the battery have to literally die or catch fire before they do that?

Update : Exactly 1 year ago I found a local Ford dealer that updated the BECM and PCM according to TSB 20- 2142 which fixed the problem on my 2011 FFH. They performed the service under the emission warranty at no cost. However, after 1 year the problem returned. This time I reset the battery age myself and it’s working again. I noticed that the battery age in the BECM module before my update was now set to 11with an invalid note.

If you download fordscan on your laptop, plug in your car you can reset your battery life and the car will start hybriding correctly again. My 2010 was doing this same thing and we reset the battery life worked great back to 35mpg 210000 miles