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2017 Fusion Energi Dead Battery Issues - FFH

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All the Ford Fusion hybrids are made in Hermasillo. All have had OEM 12 vdc battery problems from the 2010s delivered in early 2009 onward. The cars sit after manufacture and the batteries go dead and are then permanently damaged. There may also have been some quality control issues on the OEM batteries also. Replacing the battery usually solves the problem.

 

There is some conjecture ( me ) that their mode of use contributes to the problem. Non hybrid batteries are subject to loads of several hundred amps briefly when starting the ICE. The alternator than charges it briefly at close to the maximum alternator rating. These time periods are a second or two but they have the effect of briefly stirring up the liquid electrolyte. A weak battery in this instance is noted by the slower cranking speed and is an early warning symptom. In a hybrid, the 12 vdc battery does not crank the ICE. That is done by the HVB and one of the very large AC motors in the transmission. The initial load on a hybrid 12 v is usually only a few dozen amps at most instead of hundeds and the DC to DC converter starts charging the 12 v from the HVB as soon as the car is turned on whether the ICE starts or not. I feel this lets the electrolyte get stratified which can further degrade a battery already damaged by a complete discharge before delivery. There is no early warning of a marginal battery. All this coupled with relatively high "off" loads has created the problems. New replacement batteries from Ford dealers seem to have far fewer problems.

Edited by lolder

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There are several battery drain service messages:

 

SSM 46128 - 2017 MKZ/Fusion - Battery Drain - Built On Or Before 6/3/2016
Some 2017 MKZ and Fusion vehicles equipped with memory seats and built on or before 6/3/2016 may exhibit a discharged battery or a battery drain condition. Before performing normal diagnostics, reprogram the driver door module (DDM) to thelatest calibration using the Integrated Diagnostic System (IDS) version 102.02 or higher. Make sure you are connected to the internet when entering module programming to obtain the latest updates. Calibration files may also be obtained at www.motorcraftservice.com. Use causal part 14B291 and applicable labor operations from Section 10 of the service labor time standards (SLTS)manual.
APPLICABLE VEHICLES
2017 CAR: C7 FUSION
2017 CAR: C9 MKZ (CD533)
SSM 46368 - 2016 C-MAX Energi/Focus Electric/2016-2017 Fusion Energi - Battery Low State OfCharge And/Or Intermittent Battery Draw - Built On Or Before 10-Jul-2016
Some 2016 C-MAX Energi/Focus Electric and 2016-2017 Fusion Energi vehicles built on or before 10-Jul-2016, may exhibit a 12-volt and/or high voltage battery with a low state of charge and/or an intermittent battery draw. Reprogram the telematics control unit (TCU) to the latest level using IDS release 104.01 or higher. Make sure you are connected to the internet when entering module programming to obtain the latest updates. Calibration files may also be obtained at www.motorcraftservice.com. For claiming, use causal part 14G229 and applicable labor operations in section 10 of the service labor time standards (SLTS) manual.
APPLICABLE VEHICLES
2016 CAR: DH C346 FOCUS FNA
2016 - 2017 CAR: C7 FUSION
2016 CAR: CG C344N HEV
SSM 46433 - 2017 Fusion/MKZ - Battery Discharge - With Or Without Repetitive Cycling Compact Disc (CD) Ejecting Noise - Built On Or Before 23-Dec-2016
Some 2017 Fusion and MKZ vehicles built on or before 23-Dec-2016 may exhibit a discharged battery. A repetitive cycling noise similar to a CD ejecting noise may also be present. If excessive battery drain is present and eliminated with theradio battery power fuse removed, reprogram the audio control module (ACM) to the latest calibration using the Integrated Diagnostic System (IDS) release 104.03 or higher. Make sure you are connected to the internet when entering module programming to obtain the latest updates. Calibration files may also be obtained at www.motorcraftservice.com. For claiming, use causal part 18C869 and applicablelabor operations in section 10 of the SLTS manual.
APPLICABLE VEHICLES
2017 CAR: C7 FUSION
2017 CAR: C9 MKZ (CD533)
Tell your dealer you have battery drain issues, give them this list and get your dealer to reflash all the modules first. Make sure their IDS programmer is higher than version 105 before programming. Once you get it home, disconnect the 12 volt battery for 10 minutes, then reconnect it. This will allow a fresh boot of all the modules. Try this first before doing anything else.
Also, here is some battery information maybe worth reading: G0000133.pdf
Edited by billford

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The 2010-12s had lots of 12 vdc problems and are completely different cars. The way that all the hybrids use the 12 vdc is similar and they are all lead-acid wet cells.

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Is it working OK now? Replacing the battery is reasonable. OEM batteries in Ford hybrids have been notoriously bad. That and sometimes a software update usually fixes it. Give it some time.

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16 hours ago, Madmax234 said:

Hi there my 2019 ford fusion titanium hybrid has been in service over two weeks for the same issue deep sleep mode something is the drawing the battery an draining it, not cause of driving either

 

DId you have the wifi enabled in your car for automatic updates?

 

If yes, then I have heard of these doing a automatic sync update after the car turns off and sits for a while. Its supposed to time out after 30 minutes, but if something goes wrong, it will cause a battery drain. 

 

I would suggest to turn the automatic updates off and disable the wifi first, then see what happens. 

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