02 ML500 - major whining noise w/road speed
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Newbie
Joined: Jun 2011
Posts: 5
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From: Indiana
2005 ML500
02 ML500 - major whining noise w/road speed
My ML has recently started making a whining noise at speeds > ~20 mph. Noise has gotten louder over the last couple days. Doesn't do it when stopped and revving motor or turning so seems to be tranny or maybe driveshaft related. No issues shifting. Mileage is right at 125,000 and have had no major service issues.
Any ideas on how to diagnose the issue? Are there any tests I can do to correctly identify and (hopefully) undertake a DIY effort. I'm a bit reluctant to just change the tranny fluid or replace the diff bearing in hopes that it addresses.
Thanks in advance.
Any ideas on how to diagnose the issue? Are there any tests I can do to correctly identify and (hopefully) undertake a DIY effort. I'm a bit reluctant to just change the tranny fluid or replace the diff bearing in hopes that it addresses.
Thanks in advance.
Last edited by boljr01; Feb 28, 2014 at 04:33 PM. Reason: typo
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Joined: Mar 2015
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From: NEW JERSEY
W203 C32 AMG...W221 S63...SOLD...W212 E63 CURRENT
Originally Posted by junlab
mine does the same thing but whinning sound goes away when stopped and even when revving. it gets more noticeable with speed.
front differential issues?
front differential issues?
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Thread Starter
Newbie
Joined: Jun 2011
Posts: 5
Likes: 0
From: Indiana
2005 ML500
My ML has recently started making a whining noise at speeds > ~20 mph. Noise has gotten louder over the last couple days. Doesn't do it when stopped and revving motor or turning so seems to be tranny or maybe driveshaft related. No issues shifting. Mileage is right at 125,000 and have had no major service issues.
Any ideas on how to diagnose the issue? Are there any tests I can do to correctly identify and (hopefully) undertake a DIY effort. I'm a bit reluctant to just change the tranny fluid or replace the diff bearing in hopes that it addresses.
Thanks in advance.
Any ideas on how to diagnose the issue? Are there any tests I can do to correctly identify and (hopefully) undertake a DIY effort. I'm a bit reluctant to just change the tranny fluid or replace the diff bearing in hopes that it addresses.
Thanks in advance.
Edit: Circling back to confirm my issue was the center driveshaft bearing. There's a DIY thread for it which is good.
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