Jump to content

Custom Search



Welcome to Ford Fusion Energi Forum


Sign In  Log in with Facebook

Create Account
Welcome to the Ford Fusion Energi Forum. You must register to create topics or post in our community, but don't worry this is a simple free process that requires minimal information for you to signup. Be apart of the Ford Fusion Energi Forum by signing in or creating an account.
  • Start new topics and reply to others
  • Subscribe to topics and forums to get email updates
  • Get your own profile page and make new friends
  • Send personal messages to other members
  • Create a photo album, post images and more. . .
Click here to create an account now
 
Guest Message by DevFuse

Love your Fusion Energi? Register it in the official authorized Ford Energi Registry here.


Photo
* * * * * 1 votes

12 Volt battery just died on my 2017 Energi Platinum.


  • Please log in to reply
73 replies to this topic

#61 OFFLINE   murphy

murphy

    Energi Member

  • Moderators
  • PipPip
  • 2,095 posts
  • Region:U.S. Northeast
  • LocationPennsylvania
  • Current Vehicle:2013 Fusion Energi Titanium
  • My Fusion's Year:2013

Posted 21 February 2019 - 01:16 PM

That is a problem with almost any car that is computer controlled which means that it is never off.  I solved the problem on my 2013 by replacing the factory supplied wet cell battery with an AGM battery.  The only way I have found to prevent the problem is to connect a smart 12 volt battery charger to the jumper terminals under the hood when it will be parked for a long time.


  • ptjones likes this








Lose this advertisement by becoming a member. Click here to create a free account.


#62 OFFLINE   bockegg

bockegg

    New Member

  • Fusion Energi Member
  • 8 posts
  • Region:U.S. Northeast
  • Locationhuntingdon
  • Current Vehicle:2014 Ford Fusion Energi Luxury
  • My Fusion's Year:2014

Posted 21 February 2019 - 06:34 PM

That is a problem with almost any car that is computer controlled which means that it is never off.  I solved the problem on my 2013 by replacing the factory supplied wet cell battery with an AGM battery.  The only way I have found to prevent the problem is to connect a smart 12 volt battery charger to the jumper terminals under the hood when it will be parked for a long time.

Thanks for the update. This is exactly why I will be selling the car.



#63 OFFLINE   bockegg

bockegg

    New Member

  • Fusion Energi Member
  • 8 posts
  • Region:U.S. Northeast
  • Locationhuntingdon
  • Current Vehicle:2014 Ford Fusion Energi Luxury
  • My Fusion's Year:2014

Posted 21 February 2019 - 07:16 PM

There are lots (technical term) of microprocessors in an Energi.  They run all of the time.  In a weeks time of non use the 12 volt battery will be discharged.  When mine will be sitting for a long time I connect a battery charger to the 12 volt battery, using the under hood terminals, to keep it charged.  I replaced the wet cell lead acid battery in my Energi with an AGM battery in late 2013.  An AGM battery maintains its voltage to a much lower discharge level than a wet cell battery does.  In spite of that I need to keep an eye on it. 

 

I have a 12 volt 7 AH gel cell battery in my glove compartment along with some home made 12 gauge jumper cables in the event the battery goes flat.  So far I haven't needed to use it.  I check its charge level every couple of months.

The Energi is not an inexpensive car. My friend has a Tesla that he can park at an airport for a week without a problem. Another friend has a plug in Prius that can be left at the airport for a week without this problem.



#64 OFFLINE   bockegg

bockegg

    New Member

  • Fusion Energi Member
  • 8 posts
  • Region:U.S. Northeast
  • Locationhuntingdon
  • Current Vehicle:2014 Ford Fusion Energi Luxury
  • My Fusion's Year:2014

Posted 21 February 2019 - 07:27 PM

Got my 2017 Energi back. 

 

The 12volt battery tested fine.

 

The service manager told me that it was likely my driving style that caused the 12volt to go dead. I had been conducting much of my driving to work each day in EVNow only mode to ensure as little ICE usage as possible and manually switching between EVNow and EVLater when appropriate (known city driving and highway) so as to use the HVB where it works best: city driving. The manager noted that rarely driving in Auto means that the car is expending the 12volt battery to start the ICE and managing the electronics prior to HVB take-over and is never able to fully recharge it via the alternator thus causing my failure. He noted that plugging the car in to charge the EVB never charges the 12volt battery. 

 

Thus, he said that it is best to just always drive in Auto and don't bother switching modes - let the car figure things out on its own and it'll start the ICE (when in Auto mode) if the 12volt is needing to be charged by the alternator. 

It is sad that he blamed it on you, especially because he doesn't even know that our Energi cars don't have alternators. That was the biggest pile of bull I ever heard. This is a total flaw in the engineering of the vehicle.



#65 OFFLINE   Paul Creed III

Paul Creed III

    New Member

  • Fusion Energi Member
  • 40 posts
  • Region:U.S. Great Lakes
  • LocationOhio
  • Current Vehicle:2017 Ford Fusion Energi Titanium
  • My Fusion's Year:2017

Posted 22 February 2019 - 06:16 AM

 

Got my 2017 Energi back. 

 

The 12volt battery tested fine.

 

The service manager told me that it was likely my driving style that caused the 12volt to go dead. I had been conducting much of my driving to work each day in EVNow only mode to ensure as little ICE usage as possible and manually switching between EVNow and EVLater when appropriate (known city driving and highway) so as to use the HVB where it works best: city driving. The manager noted that rarely driving in Auto means that the car is expending the 12volt battery to start the ICE and managing the electronics prior to HVB take-over and is never able to fully recharge it via the alternator thus causing my failure. He noted that plugging the car in to charge the EVB never charges the 12volt battery. 

 

Thus, he said that it is best to just always drive in Auto and don't bother switching modes - let the car figure things out on its own and it'll start the ICE (when in Auto mode) if the 12volt is needing to be charged by the alternator. 

It is sad that he blamed it on you, especially because he doesn't even know that our Energi cars don't have alternators. That was the biggest pile of bull I ever heard. This is a total flaw in the engineering of the vehicle.

 

 

In the year+ since the 12volt battery issue was finally resolved (resolved by replacing the defective-from-the-factory 12volt battery and several rounds of software updates), I have had no further 12volt battery issues even though my driving style has remained largely unchanged. 


  • ptjones likes this

#66 OFFLINE   bockegg

bockegg

    New Member

  • Fusion Energi Member
  • 8 posts
  • Region:U.S. Northeast
  • Locationhuntingdon
  • Current Vehicle:2014 Ford Fusion Energi Luxury
  • My Fusion's Year:2014

Posted 22 February 2019 - 08:54 PM

In the year+ since the 12volt battery issue was finally resolved (resolved by replacing the defective-from-the-factory 12volt battery and several rounds of software updates), I have had no further 12volt battery issues even though my driving style has remained largely unchanged. 

Thank you for the update. I will have to get on my dealership to run some software updates since I just had the battery replaced not that long ago.



#67 OFFLINE   bockegg

bockegg

    New Member

  • Fusion Energi Member
  • 8 posts
  • Region:U.S. Northeast
  • Locationhuntingdon
  • Current Vehicle:2014 Ford Fusion Energi Luxury
  • My Fusion's Year:2014

Posted 22 February 2019 - 08:55 PM

Thank you for the update. I will have to get on my dealership to run some software updates since I just had the battery replaced not that long ago.

I am curious if you have let the car sit without plugging it in for 10 days?



#68 OFFLINE   4cylinder

4cylinder

    New Member

  • Fusion Energi Member
  • 167 posts
  • Region:U.S. Great Lakes
  • LocationMetro Detroit
  • Current Vehicle:2017 Energi Titanium
  • My Fusion's Year:2017

Posted 25 February 2019 - 09:05 AM

FWIW I left my car plugged in inside my garage for 3 weeks during a Michigan winter (I do not have a smart battery maintainer) and it started right back up when I got back. The 12V is more resilient than I expected. My garage is not a fancy heated type, but it does provide a reasonable amount of insulation (at least a 10C difference between inside and outside) which probably helps.

 

I would not expect to see the same result if I'd left the car in, say, airport long-term parking (or even on my driveway), where it would be directly exposed to harsh cold.

 

Nevertheless, I have a portable jumper in my center console storage just in case the worst happens. It stays plugged into my 12V port all the time (I used ForScan to make the 12V shut off instantly when the car is off, so it doesn't cause issues) so it always will have a charge if I ever need it.


Edited by 4cylinder, 25 February 2019 - 09:06 AM.


#69 OFFLINE   Red

Red

    New Member

  • Fusion Energi Member
  • 3 posts
  • Region:Decline
  • LocationIowa
  • Current Vehicle:Ford Fusion Energi
  • My Fusion's Year:2017

Posted 12 March 2019 - 05:45 PM

Hi all - new guy here.  I just bought a "manufacturer buy-back" a.k.a. lemon 2017 Ford Fusion Energi Titanium.  the original owner put about 5900 miles on it over the course of a year or so, and (from the service records that I saw) started having the dead 12V battery issue.  Apparently the dealer couldn't resolve the issue, so Ford bought the car back.  They ran some firmware updates, replaced the 12V battery, changed the oil and put it back up for sale.

 

So, I'm on week one with the car now, like it a lot, but am being very attentive to the 12V system for now.

 

I bought an OBDlink MX+ on a whim this weekend, and started messing with it last night in the garage....where I noticed something that struck me funny.  I do not remember the parameter name (can probably re-check it if anyone cares)...it was something like 12V battery voltage.   Anyway, sitting in the car, with the ignition on but not started (blinking green light on ignition button), I noticed the reading for the 12V battery was bouncing right about 15V.  This seems quite high for a charge voltage.  Upon turning the ignition off, the car responded as I expected, the voltage dropped into the low 13s and was creeping lower for the few seconds I watched it.

 

My Point...do you suppose there is some correlation between the HV to 12V DC-DC running at 15V, and the battery failures that have occurred (both with my car before I owned it and others)?

 

Looking for ideas to further vet out this theory...let me know if you have any ideas!



#70 OFFLINE   murphy

murphy

    Energi Member

  • Moderators
  • PipPip
  • 2,095 posts
  • Region:U.S. Northeast
  • LocationPennsylvania
  • Current Vehicle:2013 Fusion Energi Titanium
  • My Fusion's Year:2013

Posted 13 March 2019 - 01:43 AM

Use a high quality volt meter to measure the voltage at the battery terminals.  The maximum charging voltage should be around 14.4 volts.

 

Check the wires in the trunk just in front of the battery.  You will have to look through the battery access door.  There were reports of the wires rubbing on a sheet metal edge that caused battery drain problems.  I encased mine in foam rubber to keep them away from the metal edge.  Mine is a 2013.  I would hope that this had been fixed in a 2017.

 

If you drive the car every day you shouldn't have a problem.  If you drive the car once a week you will have 12 volt battery problems.  There are many always on microprocessors in the car that put a constant load on the 12 volt battery.



#71 OFFLINE   jj2me

jj2me

    New Member

  • Fusion Energi Member
  • 134 posts
  • Region:U.S. Northeast
  • LocationNew Jersey
  • Current Vehicle:2017 Fusion Energi Titanium
  • My Fusion's Year:2017

Posted 13 March 2019 - 09:16 AM

Was your car on? I just got different readings on my 2017 FFE Titanium using one of those cheap voltmeter displays you plug into the cigarette lighter socket:
Car on, transmission in Park: 15V
Car off: 12.5V

Edited by jj2me, 13 March 2019 - 09:45 AM.


#72 OFFLINE   Red

Red

    New Member

  • Fusion Energi Member
  • 3 posts
  • Region:Decline
  • LocationIowa
  • Current Vehicle:Ford Fusion Energi
  • My Fusion's Year:2017

Posted 13 March 2019 - 07:01 PM

If you drive the car every day you shouldn't have a problem.  If you drive the car once a week you will have 12 volt battery problems. 

 

This tidbit of info is why I felt little hesitation in buying the car. 

Given the mileage (5900 miles) over the period that the original owner has the car (bought late 2016, sold back to Ford in late 2018), plus the suspect problem batteries from the factory, I figured the "wounds" were self inflicted, and there was probably little to nothing wrong with the car (especially after the original battery was replaced last month). 

 

I will be sure to get a multimeter and check the voltage at the battery terminals under the same conditions....15V just struck me funny, especially with the car not fully "ON".  Will report back hopefully this weekend if time permits.

 

Big thanks to the info on this forum.  Hell, I just bought a 2 year old car for less than 1/2 price new, with only 5900 miles on the odometer.  I'm satisfied and fingers crossed will be for many miles!   Lol, never thought I'd have a Ford for a daily driver!



#73 OFFLINE   4cylinder

4cylinder

    New Member

  • Fusion Energi Member
  • 167 posts
  • Region:U.S. Great Lakes
  • LocationMetro Detroit
  • Current Vehicle:2017 Energi Titanium
  • My Fusion's Year:2017

Posted 14 March 2019 - 10:01 AM

Was your car on? I just got different readings on my 2017 FFE Titanium using one of those cheap voltmeter displays you plug into the cigarette lighter socket:
Car on, transmission in Park: 15V
Car off: 12.5V

 

I have an aftermarket heads-up display that is powered from the OBD port. When the car first starts while in Park, the HUD always shows the battery voltage briefly for a sanity check before switching to show my speed. It's always 15-15.4V when I start it up.



#74 OFFLINE   murphy

murphy

    Energi Member

  • Moderators
  • PipPip
  • 2,095 posts
  • Region:U.S. Northeast
  • LocationPennsylvania
  • Current Vehicle:2013 Fusion Energi Titanium
  • My Fusion's Year:2013

Posted 14 March 2019 - 10:35 AM

When the car is turned on the DC to DC converter starts charging the 12 volt battery from the HVB,  It's the same function an alternator provides in a standard car.  The Energi does not have an alternator.










0 user(s) are reading this topic

0 members, 0 guests, 0 anonymous users

Privacy Policy Terms of Service ·