So a charging system Failure message popped up along with the radio/sync system going to battery saver mode. Battery saver kicks on when I turn the car off but leave the radio on. The charging system error pops up with the ignition in the "run" position. Car starts and runs fine with no other symptoms.

I had the same thing a month ago but ended up thinking it was the battery since I had an original 2013 motorcraft. I replaced it with the heavy duty (850 CCA) I think motorcraft and the message went away. Now it popped up again today so I'm pretty sure it isn't the battery...I don't really have anything that should drain the battery when the car is off since my accessories are all on/off with key so to speak. Could the alternator be going or some other module? No CEL and no Codes I can see...at a loss.

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Did you retrain the pcm on the new battery?  Try the 30 min neg batt cable disconnect and/or kam reset.  Not sure if Forscan will allow you to reset the BMS directly.

Alternators do sometimes fail on these cars, but it could be wiring from the alt to the batt, or a damaged current sensor also.

Quote from: SHOdded on December 23, 2017, 07:32:10 PM
Did you retrain the pcm on the new battery?  Try the 30 min neg batt cable disconnect and/or kam reset.  Not sure if Forscan will allow you to reset the BMS directly.

Alternators do sometimes fail on these cars, but it could be wiring from the alt to the batt, or a damaged current sensor also.

I did a KAM reset about two weeks ago when I started tuning with Brad but will try again. Thanks for the advice.

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The (BCM) has a tendency to act wonky especially below 40 deg!
How many volts are you seeing during engineering mode ? Z
I'm hoping its not an issue with the modules not going to sleep!

https://www.ecoboostperformanceforum.com/index.php/topic,6955.0.html

Quote from: ZSHO on December 23, 2017, 08:15:18 PM
The (BCM) has a tendency to act wonky especially below 40 deg!
How many volts are you seeing during engineering mode ? Z
I'm hoping its not an issue with the modules not going to sleep!

https://www.ecoboostperformanceforum.com/index.php/topic,6955.0.html

Forgot about engineering mode! 11.7 volts...

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Had the same message come up about 2 weeks before i had a dead battery.

Get a multimeter and check the voltage of the battery with the car off.  A good battery will read about 12.7 volts.  If the battery is good, turn the car on and check the alternator.  It should be charging at about 14 volts.

Quote from: pmezo33 on December 23, 2017, 08:34:07 PM
Had the same message come up about 2 weeks before i had a dead battery.

Get a multimeter and check the voltage of the battery with the car off.  A good battery will read about 12.7 volts.  If the battery is good, turn the car on and check the alternator.  It should be charging at about 14 volts.

Well mine is at 11.7 which seems low.

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Quote from: ecoboostsho on December 23, 2017, 08:35:52 PM

Quote from: pmezo33 on December 23, 2017, 08:34:07 PM
Had the same message come up about 2 weeks before i had a dead battery.

Get a multimeter and check the voltage of the battery with the car off.  A good battery will read about 12.7 volts.  If the battery is good, turn the car on and check the alternator.  It should be charging at about 14 volts.

Well mine is at 11.7 which seems low.

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Your alternator or your battery is 11.7 volts?

Quote from: pmezo33 on December 23, 2017, 08:37:31 PM

Quote from: ecoboostsho on December 23, 2017, 08:35:52 PM

Quote from: pmezo33 on December 23, 2017, 08:34:07 PM
Had the same message come up about 2 weeks before i had a dead battery.

Get a multimeter and check the voltage of the battery with the car off.  A good battery will read about 12.7 volts.  If the battery is good, turn the car on and check the alternator.  It should be charging at about 14 volts.

Well mine is at 11.7 which seems low.

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Your alternator or your battery is 11.7 volts?

Battery. I get 14.5 with car running.

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Quote from: ecoboostsho on December 23, 2017, 08:38:10 PM

Quote from: pmezo33 on December 23, 2017, 08:37:31 PM

Quote from: ecoboostsho on December 23, 2017, 08:35:52 PM

Quote from: pmezo33 on December 23, 2017, 08:34:07 PM
Had the same message come up about 2 weeks before i had a dead battery.

Get a multimeter and check the voltage of the battery with the car off.  A good battery will read about 12.7 volts.  If the battery is good, turn the car on and check the alternator.  It should be charging at about 14 volts.

Well mine is at 11.7 which seems low.

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Your alternator or your battery is 11.7 volts?

Battery. I get 14.5 with car running.

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You've got a dead battery.  14.5 volts is a little high for an alternator, but it's probably having to work extra hard trying to charge a battery that won't charge.

I think anything below 11.8 volts will set the (BMS) management on!
Frequent and short trips will certainly take a toll on the Battery IMO.
If so take s long cruise and check to see if the voltage improves. Z

Quote from: pmezo33 on December 23, 2017, 08:39:54 PM

Quote from: ecoboostsho on December 23, 2017, 08:38:10 PM

Quote from: pmezo33 on December 23, 2017, 08:37:31 PM

Quote from: ecoboostsho on December 23, 2017, 08:35:52 PM

Quote from: pmezo33 on December 23, 2017, 08:34:07 PM
Had the same message come up about 2 weeks before i had a dead battery.

Get a multimeter and check the voltage of the battery with the car off.  A good battery will read about 12.7 volts.  If the battery is good, turn the car on and check the alternator.  It should be charging at about 14 volts.

Well mine is at 11.7 which seems low.

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Your alternator or your battery is 11.7 volts?

Battery. I get 14.5 with car running.

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You've got a dead battery.  14.5 volts is a little high for an alternator, but it's probably having to work extra hard trying to charge a battery that won't charge.

Well it's about a month old so that would be weird. I wonder if I've got some parasitic current someplace...or I'll be up for warranty on the battery I guess

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Quote from: ecoboostsho on December 23, 2017, 08:41:41 PM

Quote from: pmezo33 on December 23, 2017, 08:39:54 PM

Quote from: ecoboostsho on December 23, 2017, 08:38:10 PM

Quote from: pmezo33 on December 23, 2017, 08:37:31 PM

Quote from: ecoboostsho on December 23, 2017, 08:35:52 PM

Quote from: pmezo33 on December 23, 2017, 08:34:07 PM
Had the same message come up about 2 weeks before i had a dead battery.

Get a multimeter and check the voltage of the battery with the car off.  A good battery will read about 12.7 volts.  If the battery is good, turn the car on and check the alternator.  It should be charging at about 14 volts.

Well mine is at 11.7 which seems low.

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Your alternator or your battery is 11.7 volts?

Battery. I get 14.5 with car running.

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You've got a dead battery.  14.5 volts is a little high for an alternator, but it's probably having to work extra hard trying to charge a battery that won't charge.

Well it's about a month old so that would be weird. I wonder if I've got some parasitic current someplace...or I'll be up for warranty on the battery I guess

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I'll shut down the accessories and go for a hour drive tomorrow and see what happens. Thanks for all the help guys!

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Quote from: ecoboostsho on December 23, 2017, 08:41:41 PM
Well it's about a month old so that would be weird. I wonder if I've got some parasitic current someplace...or I'll be up for warranty on the battery I guess

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Probably just got a dud.  It's not common, but it does happen.  Bring it back to the place you got it from and let them test the battery under load.  They'll warranty it.

If you think you have a parasitic draw, pull the battery from the car, try to charge it, put it back in, and do a parasitic draw test with a multimeter. 

Quote from: pmezo33 on December 23, 2017, 08:46:45 PM

Quote from: ecoboostsho on December 23, 2017, 08:41:41 PM
Well it's about a month old so that would be weird. I wonder if I've got some parasitic current someplace...or I'll be up for warranty on the battery I guess

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Probably just got a dud.  It's not common, but it does happen.  Bring it back to the place you got it from and let them test the battery under load.  They'll warranty it.

If you think you have a parasitic draw, pull the battery from the car, try to charge it, put it back in, and do a parasitic draw test with a multimeter.

Cool. I can do that. I've got a charger and a multimeter. Thanks for the help;

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