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the good new is that this electrical draw that was 'unique' to my MDX- I'll share more about this particular problem soon, but in summary there was an aftermarket DEI module connected to the rear fuse box of my 2009 MDX that was causing a constant 8-10 AMP draw (with car off and armed) on the battery!!! this is likely a remnant of a VIPER remote start unit that I had installed when this was new about 10 years ago (and de-activated about 5 years ago)!....*DoH*....(this was a mistake that definitely came back to bite me a decade later!).....fortunately '09 MDX is starting perfectly fine now :29: