W211 whining cabin sound - Page 2

May 4, 2026 | 01:40 AM

#26

dnikolov-211

Junior Member

Joined: Jun 2025

Posts: 22

Likes: 0

W211 E500 4Matic

Quote:

Originally Posted by gogydm

You are describing the exact behavior my car is exhibiting.

Hey, wondering if you were able to replace the compressor since you last posted?

May 4, 2026 | 03:55 PM

#27

gogydm

Member

Joined: May 2012

Posts: 110

Likes: 24

From: Orange County, CA

08 E350

Quote:

Originally Posted by dnikolov-211

Hey, wondering if you were able to replace the compressor since you last posted?

Yes, I did, but haven't refilled the system with refrigerant yet. While under the car I saw a leak that I need to address this week.

May 5, 2026 | 01:09 PM

#28

dnikolov-211

Junior Member

Joined: Jun 2025

Posts: 22

Likes: 0

W211 E500 4Matic

Quote:

Originally Posted by gogydm

Yes, I did, but haven't refilled the system with refrigerant yet. While under the car I saw a leak that I need to address this week.

Good luck! Please keep me posted.

May 12, 2026 | 03:45 PM

#29

gogydm

Member

Joined: May 2012

Posts: 110

Likes: 24

From: Orange County, CA

08 E350

Quote:

Originally Posted by dnikolov-211

Good luck! Please keep me posted.

Everything is back in and fully functioning. No more noise, A/C compressor was the culprit of the noise you are describing. Happy to discuss things further if needed, feel free to shoot me a PM.

May 15, 2026 | 07:01 AM

#30

dnikolov-211

Junior Member

Joined: Jun 2025

Posts: 22

Likes: 0

W211 E500 4Matic

Quote:

Originally Posted by gogydm

Everything is back in and fully functioning. No more noise, A/C compressor was the culprit of the noise you are describing. Happy to discuss things further if needed, feel free to shoot me a PM.

Hey mate, that's great news. I have just ordered a new DENSO unit and very much looking forward to getting rid of that annoying whine. Thanks for your update!

May 15, 2026 | 10:58 AM

#31

gogydm

Member

Joined: May 2012

Posts: 110

Likes: 24

From: Orange County, CA

08 E350

Quote:

Originally Posted by dnikolov-211

Hey mate, that's great news. I have just ordered a new DENSO unit and very much looking forward to getting rid of that annoying whine. Thanks for your update!

Excellent! Keep us posted!

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