Fixes for the “System Off to Save Battery” Message. If seeing your Ford say, “System off to save battery” isn’t the best sight for you and you are looking for ways to fix the issue, here are some simple fixes you can try to perform this task without much hassle. Fix #1: Replace the Battery B. If no key fob is available you can disconnect the battery again, turn the ignition key to the on position and reconnect the battery. This usually doesn't allow the alarm to set and allows the car to start. C. Remove the aftermarket alarm system. This is usually the long term fix i recommend if the fob isn't available. When I turn my 2016 F150 off, the lights below the Ford Sync Screen stay on (volume, tun, media, all the AC lights. When I open the door to look at it, I get a message on the screen that says "System … It's low on juice. If you haven't driven your car recently, it might just need to charge. But given the age, more than likely you need to replace the 12v battery. This is different from the hybrid battery. It's just a regular car battery like you'd have in a standard ICE vehicle. Trunk, back left, there's a panel you can open to get to it. I still had the OG battery but it was just about 3 years old. Checking the voltage numbers it seemed to be going bad (hence the message that I have not seen in the 3 years I have owned the car). Got a new battery since this one was on its last legs but for whatever reason I still get this message even after 2 weeks of getting the new battery . I think it's a design flaw with the charging system. Mine hasn't gotten any worse over the course of a few months, and if I drive more than normal one week, it starts acting right again for a few days. Pay attention to the reverse beeping. I've noticed that when its not low enough to show the battery saver screen, the sound comes from the After replacing the battery, the truck continued to go into Battery Save mode showing this message on the stereo as soon as the key is turned off: The truck will not allow you to listen to the radio after you turn the key off (before you open the door). When the truck was doing this i used a battery tester, and it is testing well into the good Periodic "battery saver" message on start up. After buying a used 2016 MKC last summer the vehicle is giving a system shutdown to save battery before startup. I think this issue is due to just a few short 10 minute trips over the last month due to the stay home covid19 virus. Ok, you still change the battery the same way, but if your 2011 or newer F150 has this or something similar on the negative battery cable then you have what Ford calls a Battery Monitoring System (BMS).Starting in 2011, Ford started putting this on the trucks. It monitors the state of charge of the battery and can power systems (displays, htd Automotive Mechanic. 40 years of experience. As you probably know, the battery saver mode will come on when there is a problem in the charging system. If the charging system isn’t working, with a new battery you can drive the car for several hours and a couple of dozen re-starts before the voltage gets low enough to cause a problem.

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