refer to Cold Start Engine Noise.
My 2008 GFM Lexus IS350 has been having the same problem as described in this thread for the past few months. I decided to take the car in on July 10th. When I described the problem to the service advisor, he said it might have something to do with the cam shaft and that I will need to leave the car at the dealership for a few days. I picked the car up on July 15th and have been driving the car the past serveral hours, with serveral start ups, and have yet to encounter the problem...only time will tell if the problem will reoccur.
The following is a snip-it of my invoice:
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A instant rattle engine sound right after cold start or sit for while
Cause:
08 Engine - 08
2382WF
213050-31162 A0 Gear Assy, Camshaft(N/C)
490430-16012 A0 Gasket(N/C)
290430-16016 A0 Gasket(N/C)
111328-31030 A0 Gasket, Timing Chain(N/C)
411159-0P010 A0 Gasket, Camshaft Bea(N/C)
290430-A0001 A0 Gasket(N/C)
123915-46011 A0 Insulator, Fuel Pump(N/C)
111214-31020 A0 Gasket, Cylinder Hea(N/C)
111213-31040 A0 Gasket, Cylinder Hea(N/C)
117176-31060A1 Gasket, Air Surge Ta(N/C)
Parts: 0.00Labor: 0.00Other: 0.00Total Line A: 0.00
26241 Intake
camshaft gears oil leak down. Replaced bank 1 and 2 with improved camshaft gears per TSIB#L-SB-0156-08. Repair completed.
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If anyone else has this same TSIB done and the problem reoccured, please let me know. Thanks and good luck to all.
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