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Weird tapping noise from underneath car

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Old Nov 8, 2025 | 08:45 AM
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Default Weird tapping noise from underneath car

I’ve been hearing this tapping noise (similar to when your catalytic converter cooling off) when the car is driving and stopped.



Sounds very similar to this, but not as bad.

https://m.youtube.com/watch?v=6f7TSaYFkJw

edit: new video here.

https://imgur.com/KhUElGe


I lifted the car, turned the engine on and sourced the sound near the transmission. Also found when giving gas there’s a squeal noise (video below).

https://imgur.com/a/ixzc3il


Anyone know what it maybe?

Last edited by BChoCRNA; Nov 9, 2025 at 10:38 AM.
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Old Nov 8, 2025 | 12:18 PM
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https://www.clublexus.com/forums/is-...ing-sound.html

Lou
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Old Nov 8, 2025 | 08:29 PM
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Originally Posted by flowrider
The ticking noise is totally different from my tapping noise when I press the pedal.

I made a new video here.

https://imgur.com/KhUElGe
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Old Nov 8, 2025 | 10:57 PM
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are you referring to the noise in your video that sounds like someone softly tapping their finger on a bongo drum?

didnt you just get the new tsb done? coincidence?
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Old Nov 9, 2025 | 07:19 AM
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Your tapping sound is different from mine. My click or tap is very sporadic from the left front. Sounds like a catalytic converter cooling, but it will be a single click or two. When I exit my garage, it does it, and when I turn left, it does it sometimes, but it's not rotational, so it is very, very hard to troubleshoot and find. My sound is external, yours sounds internal. Could be a failed cat.
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Old Nov 9, 2025 | 07:28 AM
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Originally Posted by BChoCRNA
I’ve been hearing this tapping noise (similar to when your catalytic converter cooling off) when the car is driving and stopped.



Sounds very similar to this, but not as bad.

https://m.youtube.com/watch?v=6f7TSaYFkJw



I lifted the car, turned the engine on and sourced the sound near the transmission. Also found when giving gas there’s a squeal noise (video below).

https://imgur.com/a/ixzc3il



Anyone know what it maybe?
While tapping seems normal based on videos linked as well as my own ear, that squal is interesting, I never picked up on it, but maybe I have to be outside the car.
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Old Nov 10, 2025 | 06:54 AM
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OP - that is an interesting sound. I must admit I never heard such a noise before and not quite sure what could be causing it. Keep us posted if you take it to the dealer for investigation
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Old Dec 10, 2025 | 06:15 PM
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I have a metallic sound coming from the center of my car as well but its not as random as your clips. Mine sounds like something rotating and rubbing, it is in even pulses. Wondering if I can wait until the next service in Feb, if its going to need trans work at 11k mils and 1 year of age, the warranty should cover it anyway......

Last edited by Muinarc; Dec 10, 2025 at 06:18 PM.
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