One problem related to radiator has been reported for the 2006 Lexus GS300. The most recently reported issues are listed below.
Tl- the contact owns a 2006 Lexus Gs300. The contact stated that while driving at approximately 30 mph the vehicle stalled. The vehicle started and was driven to the dealer. The dealer diagnosed that the coolant from the radiator could not get to the engine and overheated the vehicle which blew a head gasket. The manufacturer was notified of the failure. The failure mileage was 97,000. Rwk.