So a tuner and long time map switch partner asked us if we could reverse the CAN messages and modify the message bytes on his EGS52 gearbox on W203 Mercedes
Of course! some testing and we had a working solution with all necessary mods
Here’s a video showing the Winter Mode and D+- buttons being used to switch modes on the TCU:
Check out the tuner, some great mods for mapswitch and TCU reversing here: https://www.facebook.com/Mercedesuniqueperformance/