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Guest Message by DevFuse

Get you C-MAX Energi Registered in the official Ford Authorized Registry. More here.


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Lessons learned from a dead 12 volt battery


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30 replies to this topic

#21 OFFLINE   honemch

honemch

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  • Region:U.S. Pacific Coast
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  • Current Vehicle:2013 C-Max Energi

Posted 06 May 2013 - 10:26 AM

Found this one... http://fordcmaxenerg...2-dayscar-dies/

 

I think there is another somewhere

 

This is the other I was thinking of... http://fordcmaxenerg...ealer#entry7022

 

but after reading it again, I don't think that one pertains to you.









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#22 OFFLINE   chryssa

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Posted 06 May 2013 - 10:56 AM

@Honemch, thanks for the speedy reply!  The second link might not apply to me, but it does give more food for thought.  Plus, Shorttack shows how important it is to keep detailed records of all system anomalies.  



#23 OFFLINE   67gtcougar

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Posted 06 May 2013 - 10:56 AM

Whew, y'all are scaring me!  I'm getting impatient and not-so-thrilled with my salesman - placed an order March 27 and have yet to see an order confirmation, DORA or VIN.  On the other hand maybe the longer I wait the more glitches will be worked out.

 

@Honemch - do you remember where you read about the bad circuit board?

I still love the car.  I was lucky when my order stalled back in February, since I was able to purchase the exact car from a lot in Oregon.  We love not having to hastle with gas stations very often.  Around town we only use about 3 gallons/month.  Hopefully all the bad publicity doesn't make the CMax as rare as the Ford Edsel. 



#24 OFFLINE   stevenlit

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Posted 28 May 2013 - 08:30 PM

I just returned from a five day trip. We towed our Energi behind the moho. Going, we had no problems. The high voltage battery was fully chared. I assume the 12 volt was too. We stopped overnight. The Energi is a great toad by the way. Coming back we did the 381 mile trip in one shot, with just brief stretch breaks. I was running in hybrid mode the last day and didn't charge it over night. When we got home after about 8 hours travel, I had to put a charger on the battery for 15-20 minutes in order to move it to the garage to plug it in. Manual sez stop every 6 hours, run the engine for 5 minutes, etc. Heck, I haven't figured out how to start the gas engine yet. I'd appreciate any knowledge you all can provide me.

#25 OFFLINE   honemch

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Posted 28 May 2013 - 08:57 PM

I just returned from a five day trip. We towed our Energi behind the moho. Going, we had no problems. The high voltage battery was fully chared. I assume the 12 volt was too. We stopped overnight. The Energi is a great toad by the way. Coming back we did the 381 mile trip in one shot, with just brief stretch breaks. I was running in hybrid mode the last day and didn't charge it over night. When we got home after about 8 hours travel, I had to put a charger on the battery for 15-20 minutes in order to move it to the garage to plug it in. Manual sez stop every 6 hours, run the engine for 5 minutes, etc. Heck, I haven't figured out how to start the gas engine yet. I'd appreciate any knowledge you all can provide me.


With the car "on" and in park, push on the gas pedal.

#26 OFFLINE   macmic6

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Posted 31 August 2013 - 09:26 PM

I have gone out to my car numerous times and found it dead. I or DH call Ford roadside, who brings out the battery that allows us to charge the car. Car goes to dealer and they can't find the problem. Car comes home and works fine for days or weeks then does it again. Well last week was the last straw. It happened twice in two days. I told them to keep it until it is fixed. They think they have found the problem. The ignition switch was sticking and draining the battery. I hope this fixes it because otherwise Ford will be giving me a new car under the Lemon Law. I just can't trust this car to be running when I need it. I have to have a car that starts every day. I have read all the postings on stuff that is causing it., 



#27 OFFLINE   altabrig

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Posted 27 May 2017 - 07:31 AM

This dead thread sure illustrates that the early builds have had the battery issues from the get go. SHOULD BE a recall or at least a FORD COVERED TCU FLASH TSB when this common failure occurs.

#28 OFFLINE   OhioEnergi1

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Posted 14 September 2017 - 07:07 PM

Well, it's been 4 years with my CMaxEnergi and I am again having dead battery problems. Sync and audio died, then a few days later I had 2 days of dead battery over the next few days. Got it to not die til I could get it to the dealer by running it on hybrid mode. The dealer fixed Sync, found some sort of small current drain on the battery and said it was good to go, after I paid a deductible on my extended warranty. Now tonight it is once again dead. Maybe it's just time for a new 12v battery, but isn't that the kind of thing they could have figured out when it was there before?

#29 OFFLINE   Perry Knopp

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Posted 15 September 2017 - 03:19 AM

Well, it's been 4 years with my CMaxEnergi and I am again having dead battery problems. Sync and audio died, then a few days later I had 2 days of dead battery over the next few days. Got it to not die til I could get it to the dealer by running it on hybrid mode. The dealer fixed Sync, found some sort of small current drain on the battery and said it was good to go, after I paid a deductible on my extended warranty. Now tonight it is once again dead. Maybe it's just time for a new 12v battery, but isn't that the kind of thing they could have figured out when it was there before?

 

 Just for the heck of it, pull fuse 79, put it back and see what happens.



#30 OFFLINE   Shorttack

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Posted 15 September 2017 - 03:26 PM

Well, it's been 4 years with my CMaxEnergi and I am again having dead battery problems. Sync and audio died, then a few days later I had 2 days of dead battery over the next few days. Got it to not die til I could get it to the dealer by running it on hybrid mode. The dealer fixed Sync, found some sort of small current drain on the battery and said it was good to go, after I paid a deductible on my extended warranty. Now tonight it is once again dead. Maybe it's just time for a new 12v battery, but isn't that the kind of thing they could have figured out when it was there before?


Same symptoms happened to my 2013 Energi this week. Charged the 12-volt battery overnight and took the car to the dealer. They ran a load test and a top-off charge. Battery declared OK and good to go.

The battery died after a month of mostly -- 80% hybrid battery use -- followed by a two-week vacation while the hybrid was on charge. I think the 12-volt gradually discharged due to the constant small electronic loads on it.

In the future, I'll charge the 12-volt before a vacation or leave it on trickle charge.

#31 OFFLINE   rbort

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Posted 15 September 2017 - 07:40 PM

To prevent a dead 12v battery while on vacation, I jump my 12v Cmax battery to a 12v marine deep cycle battery.  Leave the jumper cables on the whole time I'm gone, this way my 12v battery is alot "bigger" in capacity and can survive 1 month unattended with no incident.

 

-=>Raja.










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