(CVT?) buzzing sound

Thread Tools
 
Search this Thread
 
Rate Thread
 
Old Oct 10, 2023 | 03:30 AM
  #1  
Manny76's Avatar
Thread Starter
Newbie
 
Joined: Oct 2023
Posts: 5
Likes: 0
B Class B200 W246
(CVT?) buzzing sound

Hello
when I soft pedal or slow down, usually in gear 1/2/3, I hear a buzzing faint noise coming from the front. It goes away at higher speeds.
if it rains, it is so faint that it’s difficult to hear. If happens only if I soft press the gas, very gently, and for a fraction of a second.
Sounds like a metallic spring in the seat, but it is not, it’s some sort of an electric sound.

Attached a recording, where I over do it.

any idea what it might be? Am taking the car to the MB dealership to get it checked out.
Attached Files
Reply
Old Oct 10, 2023 | 07:35 PM
  #2  
Hey Hoser's Avatar
Junior Member
10 Year Member
Liked
Loved
Community Favorite
 
Joined: Jan 2014
Posts: 55
Likes: 9
From: Mississauga, Ontario, Canada
2013 W246 B250 Sport, 2018 CR-V Touring
What year, model, motor size, transmission type and country? Also how many miles or kilometres?
Reply
Old Oct 11, 2023 | 04:09 AM
  #3  
Manny76's Avatar
Thread Starter
Newbie
 
Joined: Oct 2023
Posts: 5
Likes: 0
B Class B200 W246
Originally Posted by Hey Hoser
What year, model, motor size, transmission type and country? Also how many miles or kilometres?
Hello
it’s from 2017, 1.6 petrol, B200, automatic, UK, done around 57k km
Thanks
Reply
Old Oct 11, 2023 | 10:17 PM
  #4  
Hey Hoser's Avatar
Junior Member
10 Year Member
Liked
Loved
Community Favorite
 
Joined: Jan 2014
Posts: 55
Likes: 9
From: Mississauga, Ontario, Canada
2013 W246 B250 Sport, 2018 CR-V Touring
I listened to recording 5 times, sorry but no idea what that is

maybe a good independent MB mechanic could figure that out, for less than MB dealer

Possibly is your car showing any scan codes?
Reply
Old Oct 17, 2023 | 06:04 AM
  #5  
Manny76's Avatar
Thread Starter
Newbie
 
Joined: Oct 2023
Posts: 5
Likes: 0
B Class B200 W246
Originally Posted by Hey Hoser
I listened to recording 5 times, sorry but no idea what that is

maybe a good independent MB mechanic could figure that out, for less than MB dealer

Possibly is your car showing any scan codes?
Do you mean if the dashboard is showing any error codes? Nope
Reply
Old Oct 17, 2023 | 06:58 PM
  #6  
Hey Hoser's Avatar
Junior Member
10 Year Member
Liked
Loved
Community Favorite
 
Joined: Jan 2014
Posts: 55
Likes: 9
From: Mississauga, Ontario, Canada
2013 W246 B250 Sport, 2018 CR-V Touring
No, I meant codes on a scanner plugged into the OBDII port under the dash of your car
Reply
Old Nov 12, 2023 | 08:56 PM
  #7  
W205C43PFL's Avatar
MBWorld God!
 
Joined: Dec 2019
Posts: 32,665
Likes: 6,417
OP, did you ever figure out what codes were stored?
Reply
Old Feb 6, 2024 | 02:38 AM
  #8  
Manny76's Avatar
Thread Starter
Newbie
 
Joined: Oct 2023
Posts: 5
Likes: 0
B Class B200 W246
Originally Posted by Hey Hoser
No, I meant codes on a scanner plugged into the OBDII port under the dash of your car
Sorry for the late reply, I don’t have any scanner at home, is this something the MB dealer does regularly? It’s due for a service in a few weeks, I was thinking to combine the two things.
Reply
MB World Stories

The Best of Mercedes & AMG

story-0

7 Craziest Things AMG Gas Ever Built

 Verdad Gallardo
story-1

New Electric Mercedes-AMG GT 4-Door Coupe Unveiled: 10 Things You Need to Know

 Verdad Gallardo
story-2

6 Mercedes Models That Did NOT Age Well (But Are Somehow Still Cool)

 Verdad Gallardo
story-3

Manual Mercedes? 6 Times Sindelfingen Let Drivers Have All The Fun

 Verdad Gallardo
story-4

Mercedes SLR McLaren 722 S Is Extremely Rare Example Modified by McLaren

 Verdad Gallardo
story-5

8 Classic Boxy Mercedes Designs That Have Aged Like Fine Wine

 Verdad Gallardo
story-6

Flawlessly Restored Mercedes 190E Evo II Heads to Auction

 Verdad Gallardo
story-7

Electric Mercedes C-Class Unveiled: 11 Things You Need to Know

 Verdad Gallardo
story-8

Mercedes EQS Gets A Major Update: Everything You Need to Know

 Verdad Gallardo
story-9

5 Underrated Mercedes-Benz Models That Don't Get the Love They Deserve

 Verdad Gallardo
Old Feb 6, 2024 | 02:41 AM
  #9  
Manny76's Avatar
Thread Starter
Newbie
 
Joined: Oct 2023
Posts: 5
Likes: 0
B Class B200 W246
Originally Posted by W205C43PFL
OP, did you ever figure out what codes were stored?
Hello, nope, we’ve decided to wait and combine with the next service which is due in a few weeks, I sent the recording to the MB dealer but they said that they need to replicate the noise themselves first to be able to take a look.

I noticed that when the car is cold, for the first 30”-60”, there is no noise. It starts after 30-60”.
Reply
Old Mar 20, 2024 | 02:10 PM
  #10  
W205C43PFL's Avatar
MBWorld God!
 
Joined: Dec 2019
Posts: 32,665
Likes: 6,417
Originally Posted by Manny76
Hello, nope, we’ve decided to wait and combine with the next service which is due in a few weeks, I sent the recording to the MB dealer but they said that they need to replicate the noise themselves first to be able to take a look.

I noticed that when the car is cold, for the first 30”-60”, there is no noise. It starts after 30-60”.
Did they ever get back to you?
Reply
Old Nov 23, 2024 | 05:21 PM
  #11  
IvanMBDuv's Avatar
Newbie
 
Joined: Nov 2024
Posts: 13
Likes: 0
W205 220d bluetech
Originally Posted by Manny76
Hello, nope, we’ve decided to wait and combine with the next service which is due in a few weeks, I sent the recording to the MB dealer but they said that they need to replicate the noise themselves first to be able to take a look.

I noticed that when the car is cold, for the first 30”-60”, there is no noise. It starts after 30-60”.
did you ever find out what was with car, i have the same problem!
Reply

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 


You have already rated this thread Rating: Thread Rating: 0 votes,  average.


All times are GMT -4. The time now is 01:57 PM.

story-0
7 Craziest Things AMG Gas Ever Built

Slideshow: Sometimes AMG builds fast sedans. Other times, it builds twin-turbo V12 land missiles and six-wheeled off-road monsters.

By Verdad Gallardo | 2026-05-26 17:59:58


VIEW MORE
story-1
New Electric Mercedes-AMG GT 4-Door Coupe Unveiled: 10 Things You Need to Know

Slideshow: Mercedes-AMG's new electric GT 4-Door Coupe trades combustion for software, synthetic noise, and more than 1,100 horsepower.

By Verdad Gallardo | 2026-05-20 20:08:15


VIEW MORE
story-2
6 Mercedes Models That Did NOT Age Well (But Are Somehow Still Cool)

Slideshow: Not every Mercedes design becomes timeless, some feel stuck in the era they came from.

By Verdad Gallardo | 2026-05-12 18:09:07


VIEW MORE
story-3
Manual Mercedes? 6 Times Sindelfingen Let Drivers Have All The Fun

Slideshow: Yes, Mercedes built manual cars, and some of them are far more interesting than you'd expect.

By Verdad Gallardo | 2026-05-02 12:36:58


VIEW MORE
story-4
Mercedes SLR McLaren 722 S Is Extremely Rare Example Modified by McLaren

Slideshow: A one-of-one U.S.-spec Mercedes-Benz SLR McLaren Roadster became even rarer after a factory-backed transformation at McLaren's headquarters.

By Verdad Gallardo | 2026-04-29 11:19:28


VIEW MORE
story-5
8 Classic Boxy Mercedes Designs That Have Aged Like Fine Wine

Slideshow: Before curves took over, Mercedes mastered the art of the straight line, and some of those shapes still look right today.

By Verdad Gallardo | 2026-04-25 12:05:49


VIEW MORE
story-6
Flawlessly Restored Mercedes 190E Evo II Heads to Auction

Slideshow: The 190E Evolution II shows how a homologation necessity became a six-figure collector icon.

By Verdad Gallardo | 2026-04-22 17:53:47


VIEW MORE
story-7
Electric Mercedes C-Class Unveiled: 11 Things You Need to Know

Slideshow: Mercedes is turning one of its core nameplates electric, and the details show just how serious this shift is.

By Verdad Gallardo | 2026-04-21 13:58:06


VIEW MORE
story-8
Mercedes EQS Gets A Major Update: Everything You Need to Know

Slideshow: Faster charging, longer range, and a controversial steer-by-wire system define the latest evolution of Mercedes-Benz EQS.

By Verdad Gallardo | 2026-04-15 10:35:34


VIEW MORE
story-9
5 Underrated Mercedes-Benz Models That Don't Get the Love They Deserve

Slideshow: These overlooked Mercedes-Benz models never got the spotlight, but they quietly delivered more than most remember.

By Verdad Gallardo | 2026-04-13 19:35:45


VIEW MORE