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Cold start noise near differential underneath car.

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Old Jan 29, 2025 | 11:00 PM
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2020 Mercedes Benz E350 4Matic (prev drove 2009 w211 4matic for 11 years)
Cold start noise near differential underneath car.

When parked and on a cold start early morning, I hear a sputtering noise underneath the car in front of or near differential on a w213 2020 e350 4Matic. Any idea what it maybe? Attached video with sound.
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File Type: mov
IMG_9792.mov (10.84 MB, 44 views)

Last edited by Oracularman; Jan 30, 2025 at 12:27 AM.
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Old Jan 30, 2025 | 04:43 PM
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Originally Posted by Oracularman
When parked and on a cold start early morning, I hear a sputtering noise underneath the car in front of or near differential on a w213 2020 e350 4Matic. Any idea what it maybe? Attached video with sound.
That is indeed very strange.
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Old Apr 11, 2025 | 05:02 PM
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OP, did you ever figure it out, that is strange noise
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Old May 28, 2025 | 11:52 AM
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2020 Mercedes Benz E350 4Matic (prev drove 2009 w211 4matic for 11 years)
Originally Posted by W205C43PFL
OP, did you ever figure it out, that is strange noise
it’s condensation related. Only happened on cold mornings during winter months. Nothing heard till date since the weather warmed up.
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Old May 28, 2025 | 01:14 PM
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Originally Posted by Oracularman
it’s condensation related. Only happened on cold mornings during winter months. Nothing heard till date since the weather warmed up.
Interesting, thanks for the update.
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Old May 28, 2025 | 08:50 PM
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You might have something loose underneath which cause the rattle before it settles.
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Old May 28, 2025 | 10:06 PM
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Originally Posted by Cosworth2000
You might have something loose underneath which cause the rattle before it settles.
Time to get a pair of chassis ears out and listen for it then.
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