Nobody said it was complicated, but its easy to **** it up with the method ill advised, people are quick to say jobs take 5 minutes, but in reality, taking screen dumps of current module coding, stripping it out, removing, refitting gateway, recoding new, road testing car, checking for errors, then refitting trims etc, DOES NOT TAKE 5 minutes, thats where the time goes when doing it properly, especially when working on other peoples cars, where there is no space for errors.
AF module is for start/stop & regen braking.