I am also curious how the trucks are being used. OP has towed about 1/2 of the miles, which may put additional stress on the battery modules compared to someone who doesn't and I'm wondering if there are higher failure rates on folks that tow more regularly with or without Max Tow option.
I don't tow often and it's just my utility trailer when I do, rarely charge away from home, charging at 48a at home (up from 24a for the first 30 months)... battery fault at 42k miles, 39 months.
Almost zero towing and the bed is used for mulch, gravel, camping equipment, and e-bikes. Mine is a dog transporter for most of the time.
