CoolDude Posted November 4, 2018 at 03:31 PM Report Share Posted November 4, 2018 at 03:31 PM Hello, Love my fusion but yesterday it left me hanging. Left the car parked for a few hours (about 2, maybe 1.5hrs). Tried to start it, nothing. Interestingly, a warning asking if it was plugged in showed up. I said no. Anyways...now it wont start. I turned the key, everything goes as normal. Except the question shows up, I have no power steering and it wont start. Tried to jumpstart it, but nothing. I am 6hinking maybe the battery is dead? I cant find anything online to give me a hint. Quote Link to comment Share on other sites More sharing options...
murphy Posted November 4, 2018 at 04:49 PM Report Share Posted November 4, 2018 at 04:49 PM What is the 12 volt battery voltage. Measure it at the terminals under the hood or at the battery itself in the trunk. The voltage has to be high enough to pull in the contactors that connect the HVB to the car. Unless a cell in the battery has shorted out charging the battery should revive the car. Quote Link to comment Share on other sites More sharing options...
bdginmo Posted November 6, 2018 at 02:15 AM Report Share Posted November 6, 2018 at 02:15 AM Agreed. Definitely get a new 12v battery. You're probably approaching 4 years of life on it so it's time to change it out anyway. I usually preemptively change the 12v battery at the 4 year mark on all my vehicles to avoid getting stranded. Quote Link to comment Share on other sites More sharing options...
CoolDude Posted November 6, 2018 at 02:25 AM Author Report Share Posted November 6, 2018 at 02:25 AM I do plan on doing that...now, I bought it used in May last year and, per agreement, it should have had a new battery. I tried to start it yesterday and it miraculously started as normal and I even used for work today. I will still reach out to the dealership since it is still under warranty. Also, how critical is jumping battery on these new hybrid and electric cars? I hear we shouldn't do it as the electronics could fry critical components. Quote Link to comment Share on other sites More sharing options...
murphy Posted November 6, 2018 at 10:45 AM Report Share Posted November 6, 2018 at 10:45 AM Do you drive it every day? I'm retired and mine can sit for a week without being used. I replaced the wet cell lead acid battery with an AGM battery 6 months after I bought the car in 2013. There are a lot of microprocessors in the car that are always on. I hook up a smart battery charger that knows how to charge an AGM battery when the car has been sitting unused for a while. Use the terminals under the hood to avoid any chance of a spark setting off hydrogen that may have accumulated above the battery. That shouldn't happen since the battery is vented underneath the car but Murphy's Law always applies. Quote Link to comment Share on other sites More sharing options...
CoolDude Posted November 6, 2018 at 02:34 PM Author Report Share Posted November 6, 2018 at 02:34 PM Hello, thanks for your commentary. I do drive daily. Except that, when it did not start (on Saturday evening), I had left parked for a week due to a business trip. It started normally on Friday night and multiple times on Saturday throughout the day, except in the early evening when it wouldn't start. Good to know about this layer of potential hydrogen build up above battery. Thanks again! Quote Link to comment Share on other sites More sharing options...
RickEnergi Posted November 6, 2018 at 03:38 PM Report Share Posted November 6, 2018 at 03:38 PM Look at the battery. It will have a date on it. Quote Link to comment Share on other sites More sharing options...
CoolDude Posted November 6, 2018 at 05:09 PM Author Report Share Posted November 6, 2018 at 05:09 PM Yes! I didnt think of that. Thanks! Quote Link to comment Share on other sites More sharing options...
bockegg Posted February 21, 2019 at 09:34 PM Report Share Posted February 21, 2019 at 09:34 PM Mine does the same thing if it sits for a week. Very inconvenient. Quote Link to comment Share on other sites More sharing options...
4cylinder Posted February 25, 2019 at 05:31 PM Report Share Posted February 25, 2019 at 05:31 PM Mine does the same thing if it sits for a week. Very inconvenient. Do you park yours outdoors? I left my car in the garage (plugged in) for 3 weeks during Xmas 2018 and it started right back up when I returned. It still has the same 12V battery it had since its original Oct 2016 build date (I am the second owner). New cars these days have too many electronics and the standard lead acid battery used in most cars hasn't advanced much in decades. Outdoor parking during the winter only exacerbates the drain. Quote Link to comment Share on other sites More sharing options...
jsamp Posted February 26, 2019 at 08:34 PM Report Share Posted February 26, 2019 at 08:34 PM (edited) Do you park yours outdoors? I left my car in the garage (plugged in) for 3 weeks during Xmas 2018 and it started right back up when I returned. It still has the same 12V battery it had since its original Oct 2016 build date (I am the second owner). New cars these days have too many electronics and the standard lead acid battery used in most cars hasn't advanced much in decades. Outdoor parking during the winter only exacerbates the drain. I would think it's better for the car to just put a trickle charger on the 12V than leave it plugged in to your EVSE for 3 weeks. 3 weeks at 100% can't be good for the battery. Edited February 26, 2019 at 08:34 PM by jsamp 4cylinder 1 Quote Link to comment Share on other sites More sharing options...
cbuckie Posted December 20, 2019 at 02:06 AM Report Share Posted December 20, 2019 at 02:06 AM Had the same issue with mine. It was the 12 volt battery in the trunk. Its needed to control certain relays to start the car. Also it will ask you if car is still plugged in even when unhooked. Changed it out and all is good now. Quote Link to comment Share on other sites More sharing options...
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