I have been battling a battery drain issue for a while now. If the jeep sits for more than a day, the battery is too low to start. I have been replacing batteries under warranty, for a couple years so I haven't worried about it. I am finally tired of replacing them though. I am going to get a platinum this spring but I want to fix the drain first. After digging into posts from a more than a year ago I found the F21 flash for the BCM. I thought all of the TSB's had been done, but I am going to run the vin again to be sure. I figure I will get the BCM reflashed anyway, but I wonder what else will get flashed in the process. I have a pre f-37 ecu, and I want it to stay that way, what are my odds?
Any advice? Has anyone had drain issues besides the bcm? I have nothing else connected like phone chargers, inverters, gps etc. Where is the BCM? I thought I would put a meter on the battery and disconnect the bcm to see if the drain went away.
And yes JL, I have tried the healing power of laughter.
