S63 AMG, S63 AMG 4Matic, S65 AMG (W222, V222) 2014 -2021

Belt Noise, screaching on high RPM - not continuous

Thread Tools
 
Search this Thread
 
Rate Thread
 
Old Jun 11, 2023 | 03:50 PM
  #1  
daxguy's Avatar
Thread Starter
Newbie
 
Joined: May 2023
Posts: 12
Likes: 0
Mercedes Benz S63 4Matic
Belt Noise, screaching on high RPM - not continuous

Hi Everyone, i have a new issue, my belt seems to slip, only when the AC is onn, i revv the car, if i gradually revv, no belt screaching, but if i immediately push the throttle the belt makes the screaching sound. If I drive hard, and change gears on high RPM with AC onn, it does the same, i will try to share a video as well for better understanding. Now i went to many mechanics, what they said at first go was to change the belt tensioner and belt. I immediately got that done but the issue did not fix. I went to many others, and they said after tensioners, they tested the pulleys, all seemed fine. But now i went to an authroized dealer, he said this is happening due to AC compressor. The pully of the AC compressor gets stuck when i immediately throttle. They said, the ac compressor needs to be changed, along with the condenser, along with cleaning the pipes as it is necessary to change the condenser along with the AC compressor. All together this formulates to be a big bill!! The AC works perfect, the problem happens only when i hit the throttle immediately and the gear shift, if sqeeqs and shifts, but what happens is that the belt slips, and its risky on high RPMs. to keep having this squeeqs. it can wear and tear the belt quick.

Any suggestion is appreciated. I am currently not convinced it is the AC compressor, and secondly why condenser needs to be changed along with it. The cooling is perfect.

Any help?? i will try to attach a video soon as well.

Reply
Old Jun 11, 2023 | 05:36 PM
  #2  
sambam2006's Avatar
Member
15 Year Member
 
Joined: Dec 2009
Posts: 126
Likes: 8
GLC Coupe, S63L W222
I have a similar issue, sounds like the belt on mine as well but I haven't had it diagnosed, it comes and goes.
I'm looking to get belt and tensioner and changed soon. Will update.
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 05:00 AM.

story-0
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-1
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-2
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-3
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-4
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-5
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-6
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-7
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
story-8
Mercedes 300D Has Pushed Well Past 1 Million Miles and It Ain't Stopping

Slideshow: A well-used 1991 Mercedes-Benz 300D with more than one million miles is now looking for a new owner, and it still appears ready for more.

By Verdad Gallardo | 2026-04-10 10:05:15


VIEW MORE
story-9
10 Most Reliable Mercedes-Benz Models You Can Buy Used

Slideshow: From bulletproof sedans to surprisingly tough SUVs, these Mercedes models proved that the three-pointed star can go the distance.

By Verdad Gallardo | 2026-04-08 09:55:49


VIEW MORE