psu86 Posted February 3, 2017 at 04:57 AM Report Share Posted February 3, 2017 at 04:57 AM 2013 FFE with 71K miles. Just started to get a nasty sulfur/rotten egg smell when I go in to garage to get car in the morning. I've read on several Ford owner boards that this may be a sign to replace the battery. Tonight I checked on the car and can hear a 'hissing' sound from the battery inside the left side of trunk. Won't be charging it tonight. Have others experienced this and if so, what was your solution?Thanks. Quote Link to comment Share on other sites More sharing options...
rbort Posted February 3, 2017 at 05:06 PM Report Share Posted February 3, 2017 at 05:06 PM In a way that's awesome as you'll end up with a warranty replacement battery pack. -=>Raja. Quote Link to comment Share on other sites More sharing options...
dlb92 Posted February 4, 2017 at 04:14 AM Report Share Posted February 4, 2017 at 04:14 AM That smell is hydrogen sulfide and it killed an entire family here on the highway in Florida. Quote Link to comment Share on other sites More sharing options...
murphy Posted February 4, 2017 at 11:05 AM Report Share Posted February 4, 2017 at 11:05 AM The 12 volt battery is vented underneath the car assuming the vent hose and the plug in the second vent are still intact. JHolter 1 Quote Link to comment Share on other sites More sharing options...
dlb92 Posted February 4, 2017 at 02:53 PM Report Share Posted February 4, 2017 at 02:53 PM Hopefully, he is ok. That stuff is extremely toxic. Quote Link to comment Share on other sites More sharing options...
bwheetley Posted February 11, 2017 at 06:02 PM Report Share Posted February 11, 2017 at 06:02 PM That should just be the 12v battery that needs replacing. After 71k miles, it's probably time. Quote Link to comment Share on other sites More sharing options...
apm Posted June 9, 2017 at 03:28 AM Report Share Posted June 9, 2017 at 03:28 AM I'm having the same issue with my 2013 Energi... A couple of days ago my wife started complaining about a rotten egg smell in the garage. I check and I didn't smell it at the time, but tonight I felt the smell inside the house. I checked the 12v battery and it was very hot but I didn't see any liquids around it. Is it a bad 12v battery? Should I replace it? My car has 53K miles so it is not under warranty. Thanks for your help on this one. Regards,Alex Quote Link to comment Share on other sites More sharing options...
murphy Posted June 9, 2017 at 09:35 AM Report Share Posted June 9, 2017 at 09:35 AM The battery is vented underneath the car. Look on the ground directly below the battery for evidence. It should not be hot. That sounds like one of the cells has shorted out. Replace it. Quote Link to comment Share on other sites More sharing options...
apm Posted June 9, 2017 at 12:51 PM Report Share Posted June 9, 2017 at 12:51 PM Is there a specific procedure for replacing the battery that would prevent me from changing it myself? Quote Link to comment Share on other sites More sharing options...
murphy Posted June 9, 2017 at 01:36 PM Report Share Posted June 9, 2017 at 01:36 PM Is there a specific procedure for replacing the battery that would prevent me from changing it myself?No. The engine control will need to relearn its operating parameters just like it did when it was new. It can be avoided by connecting another battery to the jump terminals under the hood but that means you are working "hot". If the positive battery cable touches ground that can be disastrous. If you are not experienced working "hot" I wouldn't try it. The battery does not come out through the access panel opening. The fiber panels must be disconnected and moved out of the way first. jj2me 1 Quote Link to comment Share on other sites More sharing options...
apm Posted June 12, 2017 at 02:44 PM Report Share Posted June 12, 2017 at 02:44 PM Thanks for the response... I decided to take it to the dealer because I could not find the battery anywhere. It turns out that the 390 battery is not longer manufactured. The parts department at the dealer siad that it had been replaced by the 590 battery, however that battery is a about an inch too big for the plate under the battery in the car. The mechanic tried to put the 590 in the car but of course he could not. They looked again in the system and found a 475 battery which was the correct fit. I think I paid more than I should have ($129 for the battery plus $50 for the install). In case anyone needs it, this is the new battery BXT99RT4A (470 CCA) Regards,Alex Quote Link to comment Share on other sites More sharing options...
murphy Posted June 12, 2017 at 06:20 PM Report Share Posted June 12, 2017 at 06:20 PM The 590 battery is used in the standard Fusion. The 390 was used in the Energi and the Hybrid. I never found it anywhere but at a Ford dealer. Quote Link to comment Share on other sites More sharing options...
meyersnole Posted August 12, 2017 at 04:52 PM Report Share Posted August 12, 2017 at 04:52 PM The 590 battery is used in the standard Fusion. The 390 was used in the Energi and the Hybrid. I never found it anywhere but at a Ford dealer. I replaced my battery at AutoZone with this battery. http://www.autozone.com/ignition-tune-up-and-routine-maintenance/battery/duralast-battery/755656_695251_0 Not because I thought this battery was better than the OEM part, but because mine failed and the parts store was much closer to me. This was a correct fit for the car, but it was still problematic to get into the car. Another advantage of the parts store is that they did not charge me to install the battery. Just FYI, there is a battery management system on the car and the car has to rest (left undisturbed) for 8 hours with the new battery to marry itself to the new battery -- unless you have an OBII tool to go in and perform a reset (something that Ford would do for you, but AutoZone wont). One night in the garage and the system will reset itself, not that you would know one way or the other with out the tool. Quote Link to comment Share on other sites More sharing options...
jpma Posted September 23, 2019 at 09:15 PM Report Share Posted September 23, 2019 at 09:15 PM Hi, I’m having the same or similar issue, but my service rep actually does not acknowledge the problem nor the smell. He showed me that the vehicle has no related issues on the system and said that it would show up there if any of the Ford Fusion Energi sold across the world (or North America). I’m at a loss for words, and I don’t know how to bring up an evidence of smell. It’s an unpleasant smell that I don’t want me or my wife to live with. Can anyone share more specific details and how you were able to resolve it? Thanks so much in advance. Quote Link to comment Share on other sites More sharing options...
murphy Posted September 23, 2019 at 11:31 PM Report Share Posted September 23, 2019 at 11:31 PM There are two vents on the battery. The one toward the front of the car is plugged with a plastic plug. The one toward the rear of the car has a hose connected to it. The other end of the hose is underneath the car. The smell is the same as rotten eggs (sulpher). The other smell possibility is a musty / moldy odor coming from the air conditioner. You need to know which one you have to determine the plan of attack. Quote Link to comment Share on other sites More sharing options...
ablockalypse Posted February 12, 2020 at 08:25 PM Report Share Posted February 12, 2020 at 08:25 PM Did replacing the battery take care of the smell? I have the smell now but have not been able to track it down. Thanks! Quote Link to comment Share on other sites More sharing options...
apm Posted July 22, 2020 at 07:38 PM Report Share Posted July 22, 2020 at 07:38 PM On 2/12/2020 at 3:25 PM, ablockalypse said: Did replacing the battery take care of the smell? I have the smell now but have not been able to track it down. Thanks! Yes, the battery was the problem for sure. Actually that battery I bought in June 2017 had a 3 year warranty. It failed again in May 2020, so I got a totally free replacement. First time I was ever glad that I used the dealer for a battery. Quote Link to comment Share on other sites More sharing options...
davidubl33@gmail.com Posted August 9, 2020 at 02:47 AM Report Share Posted August 9, 2020 at 02:47 AM Asking for advice: experienced rotten egg acid smell when my 2016 FFE with 74,100 is plugged in and the smell goes away when not plugged in. How much to replace battery? does this make smell go away? Can you do this with no dealer experience? any overall info helps. Quote Link to comment Share on other sites More sharing options...
murphy Posted August 9, 2020 at 11:27 AM Report Share Posted August 9, 2020 at 11:27 AM The rotten egg smell is coming from the 12 volt battery. There is no sulfur in a Li-Ion battery. I don't know your skill set but I have replaced the 12 volt battery in my car at least twice. The fiber shroud has to be removed, it can't be done through the access panel. Quote Link to comment Share on other sites More sharing options...
apm Posted August 11, 2020 at 08:24 PM Report Share Posted August 11, 2020 at 08:24 PM On 8/8/2020 at 10:47 PM, davidubl33@gmail.com said: Asking for advice: experienced rotten egg acid smell when my 2016 FFE with 74,100 is plugged in and the smell goes away when not plugged in. How much to replace battery? does this make smell go away? Can you do this with no dealer experience? any overall info helps. I believe that the big battery charges the 12v battery when the car is plugged in, and that's why you get the smell. I had the same situation a few years back with the original 12v battery that came with the car. The one I replaced earlier this year did not have a smell, but the car would not turn on at all. Quote Link to comment Share on other sites More sharing options...
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