2006 Lexus RX 330 Ignition start-up noise when car hot

2006 LEXUS RX 330
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JIBDLL
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Noises problem
2006 Lexus RX 330 6 cyl Automatic 28,000 miles

I have been to the dealer several times with this problem and they cannot find anythign wrong. When my car has been sitting in the hot sun and I start it up, it makes a squealing noise. The noise goes away after 5 seconds. I notice it is only when I turn on the ignition. I live in South Florida and my car is parked in the hot sun almost everyday. This has been going on for about 1 year.
Sep 6, 2010 at 1:35 PM
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DOCFIXIT
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Hi
Possibly be serpintine belt squeal open hood have assiatent start squeal come from belt area? has belt been changed?
Let me know
Sep 6, 2010 at 1:44 PM
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JIBDLL
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Dealer said they checked allt eh belts. Is serpentine belt somethign they would typically check?
Sep 6, 2010 at 5:34 PM
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JIBDLL
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Only makes a squeal sound when car has been sitting in hot sun.
Sep 6, 2010 at 5:36 PM
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DOCFIXIT
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Belt is a visual check and replaced on milage or time. That is why I wanted you to open hood when setting hot and listen for source of noise
Sep 7, 2010 at 12:23 PM