I think I have found the cause of the current drain that was killing my battery in my 2017 Outback. I performed a draw test at the battery negative terminal, with the following results: The current draw would drop to approximately 25ma after just 3-5 minutes, but if I watched it for a short while the amp draw would bounce up to as high as 3.0 amps, and then cycle back down to the previous 25ma level. It would do this repeatedly. I began to pull fuses from the underhood fuse box one by one, until pulling the DCM (#9) fuse caused the fluctuations to stop completely. Leaving that fuse pulled, I road-tested the car which appears to me to have all systems functioning. A little on-line research taught me that that fuse only powers the Starlink module, and that the car will work just fine without it, unless you require Starlink to function (I don’t).
l have not experienced any more low battery symptoms since I did this.
l have not experienced any more low battery symptoms since I did this.
