Or the LVBs are 2+ years old and the “end of the battery is nigh.”OMG , now 4 in 200,000, the end of the world is nigh
Have you had this checked out by ford? I just took my car in for service and to also have them check why i'm getting the 12V battery fault, since Its been a while that i've been getting them. They have no clue why it's happening and they said the codes don't show up for them.
There are 2 messages.
Make sure to leave your ph# so when people ignore the “your battery is getting old and/or low on charge” messages they can call you for a ride when their car is stuck on the side of the road.There are 2 messages.
There’s the INFORMATIONAL message that the system is shutting down to conserve energy which means just that.
I advise you let nobody have you believe it means anything more sinister than that.
Too many incorrectly read all sorts into that message.
With respect to the other plug in to charge 12V battery message, this has been found by others to present in error.
You have it from your Ford dealer there is no fault.
The car has a perfectly good 12V battery management system.
You will do no better.
Your level of use is actually irrelevant.
All you need to do is park the vehicle with transmission in Park position with park brake applied and locked when you leave it as part of the deal.
And maintain HV battery above 15%.
At that, whether you are plugged in on charge or not, if your 12V battery reaches as low as 40% which is NOT 4.8V but is nearer 12V (because the full voltage of an AGM “12V” battery is 14+Volts and 0% is not 0V) your car will wait 48hrs before turning on the DC/DC 12V charger and start to charge your “12V” battery.
When/if 12V battery reaches 30% SoC (state oif charge, charging starts straight away.
Therefore, there’s no reason you should worry.
My advice is do not let anybody frighten you into messing about with manually charging or “reconditioning” your 12V battery which should only really be done if you are a battery expert because you can do more harm to an AGM battery than good and your battery just does not require all this I’ll-advised attention!
Don't worry and let it spoil your enjoyment of your wonderful ‘Stang.
Batteries will fail.
It’s a fact of life.
You won’t stop that happening or slow the process down.
The AGM is sealed and does not perform and lose electrolyte like the old traditional wet lead-acid batteries did.
I would just deal with its failure when/if it happens, and it may never happen.
Enjoy your ‘Stang, don’t let this subject matter spoil your life
I have not read all 9 pages of this thread, so forgive me if this has already been mentioned.Make sure to leave your ph# so when people ignore the “your battery is getting old and/or low on charge” messages they can call you for a ride when their car is stuck on the side of the road.
The truth lies somewhere between your “don’t worry about it” and “you should panic.”
Which, by the way, no one is saying to panic. Just to pay attention, monitor and adjust if necessary (charge or replace).
It’s a 12v battery. If you live somewhere warm, it‘s not lasting much more than 2-3 years.
Some very interesting discussions there. The BMS procedure seems like a total troll (stand on one foot and spin in a circle
) but sure enough the battery light flashed 3x. We will see if it helps.
yep, never had it before. 6.1 and now we get that message. I wish ford would quit the dammed updates already. car was perfect then they jacked with havac and it uses more power than driving the dammed car
Slight variation on a theme.Here's another AGM chart:
Numbers are a little off, I wonder which is correct?
