Update: Getting the electronic sequence to get EPB to maintenance mode just doesn’t work mine for some reason. But I was still able to change the rear brake pads following method used by Audi/VW with EPB shown all over YouTube. Basically follow the method I used above to disable automatic EPB to prevent activation while working on it. Then, unbolted the EPB from the caliper. Manually rewind the EPB, compress the piston back with a caliper tool. Don’t use c-clamp. Change pads. Very easy, works well. Zero error codes.