"Electrical System Drain. Service Required." DIY Fixes?

[lister coggs]

Been seeing a lot of 12V battery issues on the various forums lately.
After seeing a few, I put my truck on a trickle charger (NOCO GENIUS1 in AGM mode) to avoid the hassle I hope.
So far so good.

If the dealership quotes a lot of money to fix this, I might just go this route as well until the next software update. Not my ideal solution for such an expensive / fairly new vehicle, but I guess it is what it is.

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[lister coggs]

PS: the ABC method for the HV Battery (Always Be Charging - to 80%) is a good idea for any 12V battery except put it on an AGM charger and keep it topped off to 100%.

Just a reminder, connect the negative down stream of the BMS (or the BMS will not know you topped off the battery) as in the post copied below.

This is awesome, thanks for sharing.

In my case I was disconnecting the battery entirely from the vehicle to charge it. Then reconnecting to the vehicle and resetting the BMS.

I assume my case would have still been fine since I was resetting the BMS every time I recharged the battery?