Front Differential
Thread Starter
Junior Member
Joined: Feb 2019
Posts: 71
Likes: 4
From: Indiana
2009 C63 AMG
Front Differential
Looking good for a little help here. I took the GLS550 to the shop for what I thought was a wheel bearing. After diagnosing the issue they said the noise was coming from my differential and that they do not do this service. The noise is almost like a road whine.
Questions:
Without much further diagnosis, Is it worth changing the fluid to see if the issue resolves itself?
If I do the fluid change, what is the part number for the drain plugs?
Is the fluid change as simple as
Unscrewing the top plug
Unscrewing the bottom plug
Draining and refilling
Questions:
Without much further diagnosis, Is it worth changing the fluid to see if the issue resolves itself?
If I do the fluid change, what is the part number for the drain plugs?
Is the fluid change as simple as
Unscrewing the top plug
Unscrewing the bottom plug
Draining and refilling
MBWorld Fanatic!
Joined: Jun 2021
Posts: 1,967
Likes: 534
From: New Hampsha
'17 GLS450, '14 GLK250, Grandpa's Roadster
Out Of Control!!
Joined: Sep 2018
Posts: 14,714
Likes: 4,606
From: unbegrenzt
2017 GLE350 4MATIC
Looking good for a little help here. I took the GLS550 to the shop for what I thought was a wheel bearing. After diagnosing the issue they said the noise was coming from my differential and that they do not do this service. The noise is almost like a road whine.
Questions:
Without much further diagnosis, Is it worth changing the fluid to see if the issue resolves itself?
If I do the fluid change, what is the part number for the drain plugs?
Is the fluid change as simple as
Unscrewing the top plug
Unscrewing the bottom plug
Draining and refilling
Questions:
Without much further diagnosis, Is it worth changing the fluid to see if the issue resolves itself?
If I do the fluid change, what is the part number for the drain plugs?
Is the fluid change as simple as
Unscrewing the top plug
Unscrewing the bottom plug
Draining and refilling
It's an easy procedure.
Remove fill plug
Remove drain plug
Capture old fluid
Install new drain plug, p/n A1643310056, torque 35Nm
Fill new fluid using Motive tool or equivalent
Install new fill plug, p/n A1643310056, torque 35Nm
DIY and WIS: https://mbworld.org/forums/gle-class...ml#post8345443
Last edited by chassis; Mar 29, 2025 at 02:18 PM.
Thread Starter
Junior Member
Joined: Feb 2019
Posts: 71
Likes: 4
From: Indiana
2009 C63 AMG
MBWorld Fanatic!
Joined: Jun 2021
Posts: 1,967
Likes: 534
From: New Hampsha
'17 GLS450, '14 GLK250, Grandpa's Roadster
Thread Starter
Junior Member
Joined: Feb 2019
Posts: 71
Likes: 4
From: Indiana
2009 C63 AMG
I did get the car into another shop this past week. I dropped it off at 8am and got a text that they needed me back at the shop at noon. When I came back, the owner/lead tech said he has never seen an issue like this. He said that my front and rear diff's were shot. He had me listen with his stethoscope so that I could hear the grinding. 2 remanufactured diff's with 4yr warranty is going to cost roughly $8500.
I have had the car in the garage trying to figure out next steps. I am half temped to try the replacement myself, but I can't seem to find any good tutorials.
Trending Topics
MBWorld God!
Joined: Dec 2019
Posts: 33,367
Likes: 6,619
It almost feels like you are driving on a rough road with road noise, like a drone sound on the interior. You can also feel it in the pedal.
I did get the car into another shop this past week. I dropped it off at 8am and got a text that they needed me back at the shop at noon. When I came back, the owner/lead tech said he has never seen an issue like this. He said that my front and rear diff's were shot. He had me listen with his stethoscope so that I could hear the grinding. 2 remanufactured diff's with 4yr warranty is going to cost roughly $8500.
I have had the car in the garage trying to figure out next steps. I am half temped to try the replacement myself, but I can't seem to find any good tutorials.
I did get the car into another shop this past week. I dropped it off at 8am and got a text that they needed me back at the shop at noon. When I came back, the owner/lead tech said he has never seen an issue like this. He said that my front and rear diff's were shot. He had me listen with his stethoscope so that I could hear the grinding. 2 remanufactured diff's with 4yr warranty is going to cost roughly $8500.
I have had the car in the garage trying to figure out next steps. I am half temped to try the replacement myself, but I can't seem to find any good tutorials.
MB World Stories
The Best of Mercedes & AMG
8 Oddball Mercedes Ideas That Actually Made it to Production
Verdad Gallardo
Dubai Tuner Gives the Mercedes G-Class An Entirely New Look
Verdad Gallardo
Six Gift Ideas Your AMG Loving Dad or Grad Will Cherish
7 Craziest Things AMG Gas Ever Built
Verdad Gallardo
New Electric Mercedes-AMG GT 4-Door Coupe Unveiled: 10 Things You Need to Know
Verdad Gallardo
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
MBWorld Fanatic!
Joined: Jun 2021
Posts: 3,220
Likes: 1,404
From: Fleriduh
W212 E63S Wagon - GSL580 - E63 - E350 - C300
Thing to know....we had a TOTAL service done on ours. After the service the diff rear seal is leaking a drip (here and there, so the story goes). The fix? Easy, the part...under $5.00....the "Special Tool" required to press in the gasket was like $300 and the labor is way outta hand.
Thankfully my shop/mechanic are also friends......the commenters about changing the fluid first? I agree with them 100%. It is a cheap and easy experiment.
Thankfully my shop/mechanic are also friends......the commenters about changing the fluid first? I agree with them 100%. It is a cheap and easy experiment.
Thread Starter
Junior Member
Joined: Feb 2019
Posts: 71
Likes: 4
From: Indiana
2009 C63 AMG
Thing to know....we had a TOTAL service done on ours. After the service the diff rear seal is leaking a drip (here and there, so the story goes). The fix? Easy, the part...under $5.00....the "Special Tool" required to press in the gasket was like $300 and the labor is way outta hand.
the funny thing is, is that I have 0 leaks. From the exterior, everything looks good.
Last edited by Pwhitty; Apr 21, 2025 at 09:29 AM.
MBWorld God!
Joined: Dec 2019
Posts: 33,367
Likes: 6,619
Thread Starter
Junior Member
Joined: Feb 2019
Posts: 71
Likes: 4
From: Indiana
2009 C63 AMG
MBWorld God!
Joined: Dec 2019
Posts: 33,367
Likes: 6,619
