RX - 4th Gen (2016-2022) Discussion topics related to the 2016 and up RX350 and RX450h models

2019 RX350L noise when starting

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Old 06-25-24, 05:34 PM
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RobinHood
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Question 2019 RX350L noise when starting

Hi, I'm new to this club. I have a 2019 RX350L and now it's about 40k kms. Recently, almost every time I start the engine especially when the car is cold , the noise will come from front-right side. Anyone know what the problem it might be?
The noise only happens at starting and very short, it won't make any noise during driving.
I have attached the video.
Thanks!

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IMG_5273.MOV (17.21 MB, 9 views)

Last edited by RobinHood; 06-25-24 at 10:27 PM.
Old 06-25-24, 06:53 PM
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Volley
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Sounds like the belt tensioner. Try removing the belt and see if the noise goes away - don't drive it, just start it and run it a few seconds. I think you can buy just the pulley if that is the problem.

Last edited by Volley; 06-25-24 at 08:18 PM.
Old 06-26-24, 04:11 PM
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RobinHood
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Thanks.
I listened carefully. It's more like from the AC fan or blower, or the cabin filter.
Old 06-26-24, 05:36 PM
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Volley
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Does it not happen if you start the car with the HVAC system off?
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