Hi! I havent found any canbus decoder for Toyota Avensis t27 2012.
There are one that seems to be mentioned on this forum, Raise G-RZ-FT52 but Avensis is not listed as a supported model, and it seems like that decoder has some other issues when asking chatgpt or just seeing reviews. Then there are some general decoder that maybe can be programmed to work? Not sure, and its a more expensive option.