This CL thread has a good tutorial on adding MTS module behind glovebox.
Multi Terrain Select MTS install on 2017 GX 460 Luxury - ClubLexus - Lexus Forum Discussion
GX - 2nd Gen (2010-2023) - Multi Terrain Select MTS install on 2017 GX 460 Luxury - Thank you to all in the DAC vs CC forum for all the post and information on installing the multi terrain select module. I purchased the 859A1-60040 from lexuspartsnow.com it fits the 2017 GX 460 luxury with...www.clublexus.com
Yes! That would be perfect to add to the original first post. I couldn't find anything like this