In my experience, Lexus and Porsche approach warranty work in very different ways. Lexus bends WAY over backwards to handle customer issues of any kind.
Porsche is a bit more Germanic about warranty work in general and will nick you for things that you would think would be covered under warranty.
Gereralizations I know but that is my experience to date.
BTW-doesn't make Porsche bad, they are just not Lexus (who is?) in this regard.