Lexus GS350 owners have reported 1 problem related to engine rattling and whining sounds (under the engine and engine cooling category). The most recently reported issues are listed below.
Brief engine knock/rattle noise at cold startup per TSB its a minor problem. That is not the case. This is a camshaft gear assembly defect , safety related and Lexus is not fixing this problem when they know its there.
See
all problems of the 2008 Lexus GS350
🔎.