Should I be alarmed if the Variable Valve Timing Intelligence has to be replaced on a 2003 Lexus GS 300 with 5,800 miles. After being totally trampled at the service department of the Volvo dealership where I purchased my prior automobile ('98 S70 Lemon), I vowed to be better informed this time. Please help, the car should be ready tomorrow (they have had it for five days now).