I think this is a canbus issue (load/draw with the CAN awake is roughly what you’re seeing) and that you need to monitor the CAN to track down what’s chatting and keeping the bus awake. That this is happening with two different clusters suggests that it’s NOT likely the cluster. Comms will go through the central gateway and the CGWs are known to be the source of a lot of problems though I don’t think that it’s the CGW but rather something needing to communicate with the cluster- I’d scrutinize every module that talks to the cluster, disconnect one at a time and see if the CAN activity drops.
Yes, I’ve hunted this down and solved it since I posted the video. An off-brand optical converter was keeping the MOST optical loop awake, and hence the CAN bus. I proved the hypothesis by replacing the adapter with a optical bypass, and the car quickly stopped using power after shutdown. I picked up an proper XTRONS adapter, installed it, and all is well. I’ll post more content on this.
I think this is a canbus issue (load/draw with the CAN awake is roughly what you’re seeing) and that you need to monitor the CAN to track down what’s chatting and keeping the bus awake. That this is happening with two different clusters suggests that it’s NOT likely the cluster. Comms will go through the central gateway and the CGWs are known to be the source of a lot of problems though I don’t think that it’s the CGW but rather something needing to communicate with the cluster- I’d scrutinize every module that talks to the cluster, disconnect one at a time and see if the CAN activity drops.
According to this https://mbworld.org/forums/attachments/e-class-w211-20/w211-control-module-communications-networks-595148/networking-1--313979d1438702025 the Steering Control Module, EIS, Upper Control Module and Audio Gateway Module are all suspects. The AGWs are notorious for causing issues: if you have NAV I’d look there- I have yanked the NAV units out of both of my w211s (and installed fiber optic loops to keep the MOST ring intact).
Yes, I’ve hunted this down and solved it since I posted the video. An off-brand optical converter was keeping the MOST optical loop awake, and hence the CAN bus. I proved the hypothesis by replacing the adapter with a optical bypass, and the car quickly stopped using power after shutdown. I picked up an proper XTRONS adapter, installed it, and all is well. I’ll post more content on this.