Original owner of 22 lariat need help please

[rugedraw]

It's been over a year, but...as I recall one of the SOCs that appeared on the Ford web site was not the LV battery soc but was the HV soc and there was some forum confusion about that and how to find the 12v battery soc or if it was even displayed.

OTA's depend on the state of the LVB to install. The algorithm takes into account, SoC, capcaity, voltage, temperature, BMS data quality, estimated install time and if the calculation is below spec, the update will not attempt to install.

The case below is from an ICE F150 who upgraded his 12v to an H8 to allow for a higher capacity. SoC and capacity are high, but the BMS data quality is questionable, so the OTA is failing.

Mach Lee did a great write up about these things in the Mach E forum here:

https://www.macheforum.com/site/threads/how-to-get-failed-otas-to-install.29749/

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[chl]

OTA's depend on the state of the LVB to install. The algorithm takes into account, SoC, capcaity, voltage, temperature, BMS data quality, estimated install time and if the calculation is below spec, the update will not attempt to install.

The case below is from an ICE F150 who upgraded his 12v to an H8 to allow for a higher capacity. SoC and capacity are high, but the BMS data quality is questionable, so the OTA is failing.

Mach Lee did a great write up about these things in the Mach E forum here:

https://www.macheforum.com/site/threads/how-to-get-failed-otas-to-install.29749/

Yes, I am aware of that - I had the issue a few months after I bought my truck. The thing I was getting at was I never found a Ford web site area that displayed the SOC of the 12V battery, and some folks thought there was one there somewhere - it does display the SOC of the HV battery however.

But nonetheless, thanks, that was a good write up of the issue and multiple ways to solve it when it is the LV battery that is the problem.

I used the long charge method back in the summer of 2024 when I had the update not installing due to the 12v battery SOC below 85% issue -after they explained what the obtuse error message meant, the drive method was what Ford Customer service suggested, but even after driving around for 1 hour, no go.

I keep my 12v on a trickle charger/maintainer in AGM mode(NOCO Genius1) when not using it or charging the HV - I put a small hole in the plastic next to the charge port hinge and ran a fused wire to the battery with an SAE plug at one end for the charger (hooked to the negative downstream of the BMS).

I needed a 5ft version of this for where I put the SAE end.

Added that write up to my collection.

 

[rugedraw]

@chl Ford's PTS/OASIS website is where it shows you the 12v SoC.

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