Loud groan from steering when turning left, reservoir is full.
Thread Starter
MBWorld Fanatic!
Joined: Oct 2011
Posts: 1,212
Likes: 5
From: Chicago
03 E55 AMG, 06 Harley Road King Custom 06 Ram 2500 Cummins, 97 Firebird Race Car, 88 Cutlass Supreme
Loud groan from steering when turning left, reservoir is full.
I had this happen once or twice a couple months back but it seems to be happening more often the last couple weeks. When I turn left, and only left just off center I get a groaning like sound for the first 1/4 turn of the wheel or so. Never turning right. The reservoir is full and I can't see anything obviously wrong when peeking around. Seems to happen after being parked or stopped and running for a while. Just hit 60K miles.
Is there anything common this may be? Hoping to pinpoint it and get it fixed before it develops into a real problem.
Is there anything common this may be? Hoping to pinpoint it and get it fixed before it develops into a real problem.
Last edited by BBBSS; Aug 15, 2013 at 12:34 AM.
MBWorld Fanatic!
Joined: Dec 2006
Posts: 1,124
Likes: 32
From: Florida-Germany-New York
2004 E55,1969 300SEL6.3,2011 ML350 BlueTec Diesel,2005 ML400 CDI
Try replacing the fluid. I replace PS fluid every 20K miles along with the transmission fluid. The stuff does break down over time.
MBWorld Fanatic!
Joined: Jan 2009
Posts: 3,182
Likes: 15
From: Northern VA
W211
i had that problem during the winter and the fluid was dark honey. When it should be a greenish/clear color. replaced the black reservoir that included filter and all is well. Had 65k on it when getting the noise.
MBWorld Fanatic!
Joined: Dec 2006
Posts: 1,124
Likes: 32
From: Florida-Germany-New York
2004 E55,1969 300SEL6.3,2011 ML350 BlueTec Diesel,2005 ML400 CDI
MBWorld Fanatic!
Joined: May 2007
Posts: 6,403
Likes: 140
From: Clearwater Beach, Florida
2016 Cls63s AMG
replace the reservoir too.... i did it for a maintenance reason, because they have filters inside to that aren't replaceable and have to replace the whole reservoir
Trending Topics
MB World Stories
The Best of Mercedes & AMG
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
Flawlessly Restored Mercedes 190E Evo II Heads to Auction
Verdad Gallardo
Electric Mercedes C-Class Unveiled: 11 Things You Need to Know
Verdad Gallardo
Mercedes EQS Gets A Major Update: Everything You Need to Know
Verdad Gallardo
5 Underrated Mercedes-Benz Models That Don't Get the Love They Deserve
Verdad Gallardo
Mercedes 300D Has Pushed Well Past 1 Million Miles and It Ain't Stopping
Verdad Gallardo
10 Most Reliable Mercedes-Benz Models You Can Buy Used
Verdad Gallardo
MBWorld Fanatic!
Joined: May 2007
Posts: 6,403
Likes: 140
From: Clearwater Beach, Florida
2016 Cls63s AMG
Super Member
Joined: Jan 2007
Posts: 852
Likes: 3
From: Sleepy Hollow, IL
65 Chevelle Wagon w/ C5 frame, 08 ML63, 04 S600, 04 E55,(sold) 00 ML55,(sold) 98 C43-55K Swap
FYI the original ps fluid was yellow in color but MB "updated" the fluid to the pentosin chf11s to reduce noise (green color). The filter may be clogged as well. I would flush the system as best as possible with chf11s and replace the resivour as well.
Thread Starter
MBWorld Fanatic!
Joined: Oct 2011
Posts: 1,212
Likes: 5
From: Chicago
03 E55 AMG, 06 Harley Road King Custom 06 Ram 2500 Cummins, 97 Firebird Race Car, 88 Cutlass Supreme
I'll be picking up a new reservoir and fluid. Probably gonna look around to see if I can find the fluid online cheaper. Is the Pentosin backwards compatible with the old stuff? Being an 03 I'm guessing I have the old stuff.
