Great write up teK - I think I will have to perform this on my two rear passenger doors. I wouldn't have thought that these things would stuff up after only 5 years!
As I was looking for info on this, I spotted a Lexus site were they do a similar repair - all I goto say is I'm glad we don't have to do wat they have to, see the link below if you are interested:
http://www.clublexus.com/forums/gs-second-generation/289839-door-lock-acutuators-diy.html
thanx again
Simon