The 12V battery on my 2015 FFE just gave out. I received the text message about a low battery, and my car was also completely dead; couldn't even open the door without using the blade key. I would hook up my 12V jumper battery and everything came back alive. I noticed that the 12V battery had to have some sort of charge before my car would begin charging from either my L2 EVSE or L1 EVSE.Pearl wrote:I've had my CPO 2013 FFE for 17 months now. Never a lick of a problem with it. I had been having some annoying "Key Not Found" messages when trying to start the car for a few weeks. I assumed it was a nearly 5 year old Key Fob battery dying. It happened in both key fobs. I put off changing the coin cell batteries in both fobs. Yesterday, for the first time, I get a text message that the 12V battery is low, and please plug in the vehicle. I get out to the car about a half hour later, and it is totally dead, no dome lights, not instrument cluster, nothing. The battery voltage is about 6.5V, I plug it in to L1 EVSE. This morning, still dead, battery voltage dipped to under 5 volts.
I went over to a Ford Dealer, and bought a new battery (BXT-67R). Easily changed out the battery in about ten minutes. Everything is back on.
My build date is October 2012, so this seems reasonable for the original 12V battery to last nearly 5 years.
This was by far the easiest battery swap I have done in my entire life. No corroded terminals, no non-budging bolts, it wasn't snowing, or raining, or 10 degrees out. I'm quite happy with how it worked out.
The only part that puzzles me, is the very late "low battery" warning. It really didn't give me sufficient time to replace the battery before it had a fatal error.
In hindsight, I thing the inability to communicate with both key fobs aver the past few weeks should have been my warning that the battery was dying.
Yes, but it never got back past 7 Volts or so. Totally dead. It was nearly 5 years old, so it's not unusual.triangles wrote:Did you try to recharge and test the battery before replacing it?
Ditto. My Motorcraft gave up at just over two years. However, I've noticed that with a lot of batteries from various manufacturers. Both of my Nissans ('12 Armada, '00 Maxima) need new batteries every three years, like clockwork. That is true whether the battery is from Nissan, from WalMart, from Costco, or anything else. But, the battery in my 65 Buick lasted almost 10 years. I'm wondering if the constant drain caused by newer cars is the real cause of batteries not lasting as long as they used to.Carbuff wrote:I have found that the motorcraft 12v batteries are junk. They die mysteriously within 3 years or so. Not covered on a ice vehicle. Ive had 3 die like this on new ford vehicles, relatives have had similar experiences. My new to me 2013 ffe has a brand new motorcraft 12v in it. If it had been up to me I would have replaced it with an aftermarket battery, but the dealer uses motorcraft , so be it. If I end up with any issues related to the 12v battery I will not hesitate to replace it with one from advance auto.