Strange issues

[sajohnson]

I bought a tester at Harbor Freight and tested it Monday Temp Outside was 49 degrees Battery State Of Health was 100% and State Of Charge was 65%.Now onto the Battery in my Mustang before i charged it for a little while Sunday and Monday it was at like 33% State Of Health and 33% State of Charge. I didn't check it before i started the Mustang but it whipped the 466 BBF over fine and it started but the State of Health was still 33% but State Of Charge was 100% and it came up Replace Battery. I took the Battery to Auto Zone same thing State Of Health 33% but State Of Charge was 100%. They didn't have a New Battery Like i took out in stock and neither did 2 other Stores and the Hub.

Nice! I'd be tempted to drive that more often than the BS.

It may be a good thing the battery was N/A.

Generally speaking, those inexpensive electronic battery testers have been inaccurate/unreliable -- based on reviews and forum posts I've read. The ones that get good reviews are very expensive -- from several hundred dollars to >$1,000. Midtronics is one popular brand.

You might consider getting a second opinion and comparing your tester to the one the shop or store uses.

 

[BLUEOVALRACER]

Nice! I'd be tempted to drive that more often than the BS.

It may be a good thing the battery was N/A.

Generally speaking, those inexpensive electronic battery testers have been inaccurate/unreliable -- based on reviews and forum posts I've read. The ones that get good reviews are very expensive -- from several hundred dollars to >$1,000. Midtronics is one popular brand.

You might consider getting a second opinion and comparing your tester to the one the shop or store uses.

The one i bought at Harbor Freight and the one the guy at Auto Zone used both came up replace Battery .I bought a New Battery for the Mustang at Wal Mart Ever Start Maxx 59. The Duralast Gold was over 6 years old had a 12/18 Sticker on it. Not driving the Mustang with salt on the roads.

 

[BLUEOVALRACER]

What’s your next step?

I checked the Bronco Sport battery again on Monday State Of Health was 100% and SOC was up to 65%.

 

[baybronco]

Had the vehicle completely just shut off on me. I was parked just putting in directions in parking lot and went to accelerate and the car jumped a little then the light flickered on and off till the whole car shut off and the dash lit up like a Christmas tree. Went to restart it and it stared back up no issue. Then the next day driving the dash goes dark and battery light comes on while driving. Fortunately it didn’t shut the car hold vehicle down and I could keep driving till I got home. Had the battery tested and it was bad. 3 years old didn’t seem too out of the ordinary. Then after then new battery the next week same thing with the dash and radio all shut off and battery light came back on. Took it to test the battery and it read fine. Just had the transmission fluid flushed and now my transmission fluid pressure sensor is not working and my check engine light is on. Won’t going reverse and makes an awful pose in drive. Throws code P0841 now.

I have the same issue after my transmission fluid drain and fill! Did anything come of it?

 

[Tom_Polishboy]

2021 BS BL. Back history. Car came with an EFB battery. Battery was replaced under warranty on 11-1-2023 with an AGM Motorcraft battery, manufacturer date of 9-2023. I looked at the battery today and it says made in China.

I did get the recall letter but not sure if it will apply to the second battery.

Now to my problem. Over the last couple of months the start/stop function stopped working. That's what happened the 1st time and the battery was replaced.

Over the last 10 days or so I keep getting the message, System off to save battery on the center screen. Today I charged the battery to 100% and 12.8 volts. Drove about 20 miles and back home. I shut it off, let it go to sleep, and turned the ignition on and the message was back.

This was 4 hours later. Battery voltage was at 12.2 volts. With an AGM battery 12.2 volts is about 60% S.O.C. So, 4 hours later it went from 100% to 60%.

Alternator is charging at 14.6 volts. I disconnected the + battery cable for 5 minutes and reconnected it. This seemed to clear the message on the center screen. I'll check it again tomorrow to see if it returns. I'm guessing another battery going bad. So with the recall we'll see if it will be replaced a 2nd time on their dime. If not, I'll buy something else besides what Ford has to offer, Costco or maybe Sam's.

Another issue but I'm not sure if it's related. The passenger door touch sensor will not lock or unlock any doors. Drivers side works fine. I can lock or unlock the doors with the passenger side inside buttons, just not the outside. This started about a week ago.

Appreciate any input.

Hi, what was your final root cause and solution? It looks like I have a similar issue.

 

[wireman]

Did the TSB for the BCM charging problem. Bought a new battery on my dime.

I sold the 2021 BL last week. In a 2025 BL now.

 

[Tom_Polishboy]

Did the TSB for the BCM charging problem. Bought a new battery on my dime.

I sold the 2021 BL last week. In a 2025 BL now.

I appreciate quick response.

Perhaps you noted or remember TSB number ?

 

[wireman]

I appreciate quick response.

Perhaps you noted or remember TSB number ?

25S26 BCM & PCM recalibration.

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