S-Class (W223) 2021 to Present

Another noise behind dashboard thread

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Old Jun 21, 2026 | 01:59 PM
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Another noise behind dashboard thread

OK - I tend to be good at tracking down squeaks/noises but this one is beating me. I've searched and read every thread I could find on this, and don't think I've seen a good solution and/or my exact problem. On my 2025 S580e with 7k miles, I have a ticking sound that I've isolated to the passenger side dashboard, about a foot or so from the A-pillar, near the windshield. Absolutely not coming from overhead panels, center screen, various LED light strips, center speaker, air vents, A-pillar.

This sounds like a slowly-clicking Geiger counter. The noise only happens when moving (forward or reverse, slow or fast, smooth or rough road). I mean I can be going 1mph and hear it. Not patterned. Same volume always. Happens when in electric-only mode, or using the motor. Happens with HVAC on or off. Happens when radio on or off. Happens when MBUX screen is turned on or off. Cannot recreate the sound with any pressing, etc on any part of the dashboard or in the glove compartment.

I got under the hood and removed plastic panels, couldn't recreate the sound. Felt tape on these panels, on wire looms, etc. Pulled out cabin air filter and couldn't recreate the sound. Sprayed some silicone in various areas anyways.

Still no change. Of course I'm still under warranty so next step is take it to the dealer - but it is pretty inconvenient for me to do so and I like to DIY if possible. Ideas???
Attached Files
File Type: wav
S580e ticking.wav (104.8 KB, 11 views)
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Old Jun 21, 2026 | 02:40 PM
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Hmmm... Keep us posted if you ever find a solution. It's not uncommon at all. My brother is trying to track a few, but he gave up for how many he has to track. However, I think the one you are describing is related to a large main-dashboard bolt attached to the body of the car that we tried to once track.
Also please get your dealer involve. I feel that it's really helpful for dealers to report these issues to corporate because of how often, frequent, these similar complaints for almost every side of the car nowadays between numerous users. That will help them to tackle these issues in the upcoming generation.

Last edited by S_W222; Jun 21, 2026 at 02:43 PM.
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Old Jun 21, 2026 | 09:11 PM
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You said pressing doesn't recreate the sound, I assume it also doesn't stop it? Where all did you spray silicone? A foot down from the A pillar or a foot across the dash from the A Pillar?
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Old Jun 21, 2026 | 09:14 PM
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Apologies - unable to recreate or stop the sound by pressing anywhere in the inside of the car.

silicone sprayed in engine bay on various parts near the firewall.
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Old Jun 21, 2026 | 09:39 PM
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And you hear it at any speed moving?
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Old Yesterday | 07:56 AM
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Any speed, 1mph in driveway or highway. And the intensity, volume, frequency doesn’t change. But must be rolling. Forward and reverse. Also cannot reproduce the sound by bouncing around in the car
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Old Yesterday | 10:04 AM
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What is the cadence of the tick? 1 second, 2, 3, etc?
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Old Yesterday | 10:07 AM
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Irregular cadence. I attached a sound file but maybe it isn’t working?
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Old Yesterday | 10:30 AM
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Originally Posted by epnfrn
Any speed, 1mph in driveway or highway. And the intensity, volume, frequency doesn’t change. But must be rolling. Forward and reverse. Also cannot reproduce the sound by bouncing around in the car
Sounds like chassis related connection between the dash and the body of the vehicle as I suspected. I hope this is not the case though. We had the same one and my brother and I think it's one of the bolts that holds the dash against the body of the car with metal to plastic contact. We couldn't address it no matter what, and the intensity weather/temp dependent. Very frustrating. Of course dealer says "works as designed and couldn't duplicate"... well of course as designed!!
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Old Yesterday | 10:53 AM
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Does it sound exactly the same and are you able to recreate it in the exact same conditions as in the dead of winter when it's very cold outside and in the dead of summer when it's hot outside?
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Old Yesterday | 11:19 AM
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Have only had the car for a couple
months so can’t comment on the extremes. But there has not been noticeable difference on hot or cold days.
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Old Yesterday | 01:21 PM
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With a cabin so quiet, noise issues like this must be so frustrating.
The way you describe the noise though, it sounds like it's not a physical part to part rubbing but rather some sort of module or actuation noise.
Let us know what you find out. Good luck with the repair.

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Old Yesterday | 04:22 PM
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Yeah I was able to download and listen to the sound, it sounds like a vibrating sound to me, but you would expect that would change based on transmission gear etc.

'fraid you're going to have to take it to the dealer for that one...
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