this is NOT a service item and Lexus would probably never consider it needs sorting out EVER ......... just that experience shows it sometimes happens and when it does it's 'orribly expensive and often, for the Ls430, just simply Terminal
just put it in your diary for 12 years and 120k miles time I guess
Family besides, you might well still have your fabulous Ls460 then
Malc
I'm assuming the ' cooler ' is the same as sorting out the radiator issue ?