I went round and round trying to help out a gentleman and his symptom was like your's. Down on the buss / breaker (left front frame near batteries) there was a strap, that probably the dealer installed that essentially bypassed the BCO.
Let me see if I can find the picture. I couldn't find the original clean pic, but look at the wire I am pointing to with RED arrows... it is a strap that negates the BCO. If you have one REMOVE it.
I bet the dealer did it to power up the unit when they didn't know the BCO was operated. Just a hunch.
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