Well, you own an exceptionally complex car which still retains the form factor of a limousine. All the hardware for these features has to go somewhere and that usually means the space around the engine. There is not a lot the engineers can do to improve things. They are struggling to find usable space.
I suppose Toyota / Lexus is black magic, then?
I went to visit the shop while they were working on it. Wow, I do a bit of car work, but if I ever had my car in so many pieces I would never have gotten in back together again.
Thank god for extended warranties. I’ve never made out on a warranty so well, but one thing is for sure, I will never own that car out of warranty.