Humming Sound
Thread Starter
Newbie
Joined: Jun 2021
Posts: 9
Likes: 1
'20 C43
Humming Sound
Took my car (20 C43) out for. spin today, and when I got home there was this humming sound (sounded like electrical interference in a speaker) that could be heard from the front drivers side. I thought at first that I was hearing things, but the wife said something about it as well. I parked the car still able to hear the hum, turned it off, and turned it back on and the hum was gone. Any ideas on what it maybe?
Help!
Help!
Super Member
Joined: Oct 2017
Posts: 882
Likes: 110
2021 M550i
Is this what you are experiencing? post is relatively new as well
https://mbworld.org/forums/c450-c43-...ea-20-c43.html
https://mbworld.org/forums/c450-c43-...ea-20-c43.html
MBWorld God!
Joined: Dec 2019
Posts: 32,536
Likes: 6,358
Unfortunately, our cars makes lots of noises, most are normal, some are rather interesting and still may be normal but without a video it is really hard to help you. If you couldn't record it and it is intermittent I am afraid the dealership wouldn't be able to help you if they can't duplicate it either. Can you tell us more details, for example, is the sound louder in the rear or is it clearly from the engine bay? Is your climate control on? Is your car warm when the sound occurs, is it dry or wet outside, what is the temperature like outside, what speeds was the sound the most apparent, what drive mode were you in, etc.
Edit: As the previous post suggested, can you please check the video and tell us if the sound is similar to that?
Edit: As the previous post suggested, can you please check the video and tell us if the sound is similar to that?
MBWorld Fanatic!
Joined: Feb 2008
Posts: 2,829
Likes: 95
'20 GLC300 SUV
Originally Posted by W205C43PFL;[url=tel:8358326
8358326[/url]]Unfortunately, our cars makes lots of noises, most are normal, some are rather interesting and still may be normal but without a video it is really hard to help you. If you couldn't record it and it is intermittent I am afraid the dealership wouldn't be able to help you if they can't duplicate it either. Can you tell us more details, for example, is the sound louder in the rear or is it clearly from the engine bay? Is your climate control on? Is your car warm when the sound occurs, is it dry or wet outside, what is the temperature like outside, what speeds was the sound the most apparent, what drive mode were you in, etc.
Edit: As the previous post suggested, can you please check the video and tell us if the sound is similar to that?
Edit: As the previous post suggested, can you please check the video and tell us if the sound is similar to that?
Thread Starter
Newbie
Joined: Jun 2021
Posts: 9
Likes: 1
'20 C43
Hey Guys,
Thanks for the comments, been a busy week and I really haven't driven the car since posting. I did check the clip out from the other thread and its definitely not that sound.
I was able to capture it today, seems like it was intermittent. We came home after a 20 min drive, pulled on the driveway and I was able to hear it. It is definitely coming from the front, and it definitely louder when I lifted the hood up to grab video. We went for an even longer drive (60 miles) after I heard the hum on the driveway, pulled up, the wife and kiddo got out and there was no noise. As soon as they cleared the front of the car, it started up again. It sounds like its from the radar, but then again, first time I have owned a car with radar guided cruise so, I could be wrong.
https://imgur.com/a/zS8A2UV
Thanks for the comments, been a busy week and I really haven't driven the car since posting. I did check the clip out from the other thread and its definitely not that sound.
I was able to capture it today, seems like it was intermittent. We came home after a 20 min drive, pulled on the driveway and I was able to hear it. It is definitely coming from the front, and it definitely louder when I lifted the hood up to grab video. We went for an even longer drive (60 miles) after I heard the hum on the driveway, pulled up, the wife and kiddo got out and there was no noise. As soon as they cleared the front of the car, it started up again. It sounds like its from the radar, but then again, first time I have owned a car with radar guided cruise so, I could be wrong.
https://imgur.com/a/zS8A2UV
MBWorld God!
Joined: Dec 2019
Posts: 32,536
Likes: 6,358
Hey Guys,
Thanks for the comments, been a busy week and I really haven't driven the car since posting. I did check the clip out from the other thread and its definitely not that sound.
I was able to capture it today, seems like it was intermittent. We came home after a 20 min drive, pulled on the driveway and I was able to hear it. It is definitely coming from the front, and it definitely louder when I lifted the hood up to grab video. We went for an even longer drive (60 miles) after I heard the hum on the driveway, pulled up, the wife and kiddo got out and there was no noise. As soon as they cleared the front of the car, it started up again. It sounds like its from the radar, but then again, first time I have owned a car with radar guided cruise so, I could be wrong.
https://imgur.com/a/zS8A2UV
Thanks for the comments, been a busy week and I really haven't driven the car since posting. I did check the clip out from the other thread and its definitely not that sound.
I was able to capture it today, seems like it was intermittent. We came home after a 20 min drive, pulled on the driveway and I was able to hear it. It is definitely coming from the front, and it definitely louder when I lifted the hood up to grab video. We went for an even longer drive (60 miles) after I heard the hum on the driveway, pulled up, the wife and kiddo got out and there was no noise. As soon as they cleared the front of the car, it started up again. It sounds like its from the radar, but then again, first time I have owned a car with radar guided cruise so, I could be wrong.
https://imgur.com/a/zS8A2UV
https://mbworld.org/forums/c450-c43-...ing-sound.html
Unfortunately, the status of the issue was never updated by the original poster of the thread.
Last edited by W205C43PFL; Jun 18, 2021 at 11:03 PM.
Trending Topics
MBWorld God!
Joined: Dec 2019
Posts: 32,536
Likes: 6,358
Last edited by W205C43PFL; Jun 18, 2021 at 11:08 PM.
MB World Stories
The Best of Mercedes & AMG
6 Mercedes Models That Did NOT Age Well (But Are Somehow Still Cool)
Verdad Gallardo
Manual Mercedes? 6 Times Sindelfingen Let Drivers Have All The Fun
Verdad Gallardo
Mercedes SLR McLaren 722 S Is Extremely Rare Example Modified by McLaren
Verdad Gallardo
8 Classic Boxy Mercedes Designs That Have Aged Like Fine Wine
Verdad Gallardo
Flawlessly Restored Mercedes 190E Evo II Heads to Auction
Verdad Gallardo
Electric Mercedes C-Class Unveiled: 11 Things You Need to Know
Verdad Gallardo
Mercedes EQS Gets A Major Update: Everything You Need to Know
Verdad Gallardo
5 Underrated Mercedes-Benz Models That Don't Get the Love They Deserve
Verdad Gallardo
Mercedes 300D Has Pushed Well Past 1 Million Miles and It Ain't Stopping
Verdad Gallardo
Thread Starter
Newbie
Joined: Jun 2021
Posts: 9
Likes: 1
'20 C43
Sorry that it ended up that way, hopefully someone else on the forum that might know what it is charms in. Otherwise, please let us know what the dealership tells you the problem is once it is fixed. It will be helpful for others who might experience the problem in the future.
MBWorld God!
Joined: Dec 2019
Posts: 32,536
Likes: 6,358
Last edited by W205C43PFL; Jun 23, 2021 at 11:44 AM.
Thread Starter
Newbie
Joined: Jun 2021
Posts: 9
Likes: 1
'20 C43
Alrighty....
Just picked up the car, and well it appears that they have fixed it. We will see.
I played the audio I posted to the lead tech, and let him know where I was hearing the sound once I popped the hood. Lead tech took the car for a road test, and was able to confirm the same sound I was hearing. They were able to pinpoint the issue to the Boost Pressure Transducer (010-153-13-28). I was told it is an air pressure sensor for the turbo. Dealer replaced the sensor, and performed another road test where they confirmed that the sound was no longer being produced.
I was stuck in a drive thru for a while and I didn't hear it, and so Im hopeful, but only time will tell.
Just picked up the car, and well it appears that they have fixed it. We will see.
I played the audio I posted to the lead tech, and let him know where I was hearing the sound once I popped the hood. Lead tech took the car for a road test, and was able to confirm the same sound I was hearing. They were able to pinpoint the issue to the Boost Pressure Transducer (010-153-13-28). I was told it is an air pressure sensor for the turbo. Dealer replaced the sensor, and performed another road test where they confirmed that the sound was no longer being produced.
I was stuck in a drive thru for a while and I didn't hear it, and so Im hopeful, but only time will tell.
MBWorld God!
Joined: Dec 2019
Posts: 32,536
Likes: 6,358
Alrighty....
Just picked up the car, and well it appears that they have fixed it. We will see.
I played the audio I posted to the lead tech, and let him know where I was hearing the sound once I popped the hood. Lead tech took the car for a road test, and was able to confirm the same sound I was hearing. They were able to pinpoint the issue to the Boost Pressure Transducer (010-153-13-28). I was told it is an air pressure sensor for the turbo. Dealer replaced the sensor, and performed another road test where they confirmed that the sound was no longer being produced.
I was stuck in a drive thru for a while and I didn't hear it, and so Im hopeful, but only time will tell.
Just picked up the car, and well it appears that they have fixed it. We will see.
I played the audio I posted to the lead tech, and let him know where I was hearing the sound once I popped the hood. Lead tech took the car for a road test, and was able to confirm the same sound I was hearing. They were able to pinpoint the issue to the Boost Pressure Transducer (010-153-13-28). I was told it is an air pressure sensor for the turbo. Dealer replaced the sensor, and performed another road test where they confirmed that the sound was no longer being produced.
I was stuck in a drive thru for a while and I didn't hear it, and so Im hopeful, but only time will tell.
Thank you for your update on this thread and letting us know the results of the diagnostics and the repair (incl. part number) that was necessary to fix the issue. Although the issue is uncommon, I am sure your post will be helpful for anyone else that happens to have this exact same problem in the future.
Enjoy your car!
Newbie
Joined: Oct 2023
Posts: 1
Likes: 0
GLE43 Coupe AMG
Hey thanks for this post. According to your video my 19” GLE43 AMG is doing the same Humming noise. It’s at the dealership now. They said it was a valve and were surprised that the Check engine light did not go on because of this. Also my heat pump needed to be replaced as the heat was blowing on one side and cold on the passengers. But I’m not sure exactly what the part that’s being replaced is called but I will update it on here when I retrieve my vehicle on Tuesday. Hopefully yours is corrected and still going well.
