Mine has been in and out of local dealer, noticed that the side bolster was cracking and asked them to sort it.
Did their best and they had to battle with Lexus, eventually replacedthe bottom half of the seat.... Not impressed as the side bolster is on the top half... Oh well another 2 months waiting on the top part...
Bottom line is they will replace it but it costs circa £1300 so the dealer needs to get authorisation from Lexus. Take photo's pass them to the dealer so they in turn can forward them onto lexus. You will need to wait a bit for authorisation then for the part to get shipped from Japan..
Hopefully your car will come back in one piece, not all scratched and have to go to the bodyshop.... About to go off on a rant so will stop now!!!