Whining/bearing sound from the rear. X166, GL350
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Newbie
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X166
Whining/bearing sound from the rear. X166, GL350
Hi, need some advice.
My GL is marking bearing noise from the rear end at 40 km/h. Its increasing and at 55km/h i can hear whining sound. At 60km/h it disapears and comes again from around 80-100 but with much lower noise.
Noise appears only when accelerating. If i release the pedal sound stops immediatelly. All the oils in transmission are changed. Any suggestions?
Mulleage 150k km.
https://youtu.be/1EcDJA4agDw
My GL is marking bearing noise from the rear end at 40 km/h. Its increasing and at 55km/h i can hear whining sound. At 60km/h it disapears and comes again from around 80-100 but with much lower noise.
Noise appears only when accelerating. If i release the pedal sound stops immediatelly. All the oils in transmission are changed. Any suggestions?
Mulleage 150k km.
https://youtu.be/1EcDJA4agDw
Out Of Control!!
Joined: Sep 2018
Posts: 14,666
Likes: 4,568
From: unbegrenzt
2017 GLE350 4MATIC
Something is not right in the driveline: propshaft, differential or halfshafts.
Whining means high speed, which means either differential or propshaft.
Is there any vibration noted? If you swerve relatively aggressively at highway speed (carefully with no one around you), does the noise change on one side or the other?
Could be bearings or gears in the differential.
Whining means high speed, which means either differential or propshaft.
Is there any vibration noted? If you swerve relatively aggressively at highway speed (carefully with no one around you), does the noise change on one side or the other?
Could be bearings or gears in the differential.
Thread Starter
Newbie
Joined: Jan 2022
Posts: 3
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X166
Something is not right in the driveline: propshaft, differential or halfshafts.
Whining means high speed, which means either differential or propshaft.
Is there any vibration noted? If you swerve relatively aggressively at highway speed (carefully with no one around you), does the noise change on one side or the other?
Could be bearings or gears in the differential.
Whining means high speed, which means either differential or propshaft.
Is there any vibration noted? If you swerve relatively aggressively at highway speed (carefully with no one around you), does the noise change on one side or the other?
Could be bearings or gears in the differential.
thanks for reply. I have some very slight vibration sometimes on ~100-120 km/h. i thought it's wheels disbalance, but i can feel this slight vibration only some times. so wheels shouldnt be the case.
If I swerve - there is no change in that noise. on the highway this sound is really hart to notice so actually no chance to check if it's changing between the sides.
Bearings of gears shouldn't be as the same noise is while driving on any gear. main indicatior is speed.
Main problem is that it's very hard to diagnose such thing, but it's really annoyng and i dont know how much I can trust this car on long road trips.
Out Of Control!!
Joined: Sep 2018
Posts: 14,666
Likes: 4,568
From: unbegrenzt
2017 GLE350 4MATIC
Hi,
thanks for reply. I have some very slight vibration sometimes on ~100-120 km/h. i thought it's wheels disbalance, but i can feel this slight vibration only some times. so wheels shouldnt be the case.
If I swerve - there is no change in that noise. on the highway this sound is really hart to notice so actually no chance to check if it's changing between the sides.
Bearings of gears shouldn't be as the same noise is while driving on any gear. main indicatior is speed.
Main problem is that it's very hard to diagnose such thing, but it's really annoyng and i dont know how much I can trust this car on long road trips.
thanks for reply. I have some very slight vibration sometimes on ~100-120 km/h. i thought it's wheels disbalance, but i can feel this slight vibration only some times. so wheels shouldnt be the case.
If I swerve - there is no change in that noise. on the highway this sound is really hart to notice so actually no chance to check if it's changing between the sides.
Bearings of gears shouldn't be as the same noise is while driving on any gear. main indicatior is speed.
Main problem is that it's very hard to diagnose such thing, but it's really annoyng and i dont know how much I can trust this car on long road trips.
Tip in/tip out noise as you indicate means torque related. No side to side noise as you indicated means not the wheel bearings or halfshafts.
Out Of Control!!
Joined: Sep 2018
Posts: 14,666
Likes: 4,568
From: unbegrenzt
2017 GLE350 4MATIC
You said there is a vibration. This is likely propshaft related. Differential bearing and gear noise is high frequency audible, not a vibration.
It could be propshaft flex coupling, center bearing or u-joint.
It could be propshaft flex coupling, center bearing or u-joint.
Thread Starter
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X166
Just got the diagnose from one of the repair centers. It's the transfer case making sound. They checked this one on the hydraulic car lift. There is DYNO mode on Mercedes, which allows to check such cases.
My question would be if anyone could help with precise part number of the transfer case for the X166 190kW GL350 without off road package.
My question would be if anyone could help with precise part number of the transfer case for the X166 190kW GL350 without off road package.
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Newbie
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2017 GLS450, 2003 G500
Just got the diagnose from one of the repair centers. It's the transfer case making sound. They checked this one on the hydraulic car lift. There is DYNO mode on Mercedes, which allows to check such cases.
My question would be if anyone could help with precise part number of the transfer case for the X166 190kW GL350 without off road package.
My question would be if anyone could help with precise part number of the transfer case for the X166 190kW GL350 without off road package.
It's not the turbo wastegate loose as when the car is not in gear, revving the engine does not produce the same sound.
Driving me crazy!
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Newbie
Joined: Jun 2024
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2017 GLS450, 2003 G500
Did you ever get this fixed or find out what the part/problem was? My 2017 GLS 450 is doing the same thing. Slight/Soft grinding sound, only under acceleration at lower RPMs - doesn't matter which gear.
It's not the turbo wastegate loose as when the car is not in gear, revving the engine does not produce the same sound.
Driving me crazy!
It's not the turbo wastegate loose as when the car is not in gear, revving the engine does not produce the same sound.
Driving me crazy!
Member
Joined: Oct 2011
Posts: 105
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From: SC
2015 GL350, 2013 GL350, 2002 ML320, 1983 E300TD-D
I had to do both the transfer case chain & rear wheel bearings. Both were pretty easy jobs. Transfer case chain & most all bearings can be done without removing the case. I just changed the chain about 100k miles ago, no bearings. Cobra transmission in FL has a complete rebuild kit for it.
Super Member
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From: NE OHIO
1998 SL500,2011 GL550,2009 ML350,past 1995 E320 Cabrio ,2005 ML500,2006 ML500,1996 SL500,1972 280SEL
MBWorld Fanatic!
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From: In my garage
E55, GLS450, GL63, GLE350
Junior Member
Joined: Mar 2013
Posts: 69
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From: SE Pennsylvania
07 C280 4matic, 2014 GL450, 91 VW Vanagon
2014 GL 450 - 137K miles, I also have a whine. Had a rear wheel bearing replaced a couple months ago. This is a more a high pitched/higher speed whine. Repair shop suspects pinion bearing. Does this sound plausable? Transfer case chain????? General thoughts please.
Bob C
Bob C
Member
Joined: May 2010
Posts: 89
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2003 E320 4matic wagon
2014 GL 450 - 137K miles, I also have a whine. Had a rear wheel bearing replaced a couple months ago. This is a more a high pitched/higher speed whine. Repair shop suspects pinion bearing. Does this sound plausable? Transfer case chain????? General thoughts please.
Bob C
Bob C
Service sheet for torque specs and any special tools needed? Thanks.
Super Member
Joined: Jul 2016
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From: NE OHIO
1998 SL500,2011 GL550,2009 ML350,past 1995 E320 Cabrio ,2005 ML500,2006 ML500,1996 SL500,1972 280SEL
wheel bearings
https://mbworld.org/forums/m-class-w164/636264-wheel-bearing-w164.html
Last edited by vesiadog; Aug 3, 2024 at 12:02 PM.
Newbie
Joined: Jun 2020
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GL350 bluetec
I am following this thread as I have a 2020 GLE350 and cannot figure out where the rattle is originating. Seems like the rear drivers side. I took it to a mechanic and he thought is was a shock even though it is not leaking .I really don't want to replace it if that's not the problem. I have checked the spare tire area. The rattle is only when I am driving under 30 MPH. Can this be something inside of the car or is it suspension. I too have the full glass roof. Help!
