Sorry to hear you are still struggling with this, but I thought this link might be a good resource for you if you are concerned with current drain: https://www.disco4.com/forum/topic119574.html.

 

So, after several more MIL issues related to EPB, CANbus and fueling, I decided to try an experiment, I disconnected the console EPB harness, the EPB harness at the actuator and the DTML pump. I sprayed them thoroughly with electronics cleaner and put them back together. I've since over the last 4 weeks had no further DTCs related to the EPB, though replacing the alternator, at least for some time, also appeared to eliminate errors. Additionally another issue seems, at least mostly, to have been resolved with regards to too low idle RPM.