S-Class (W221) 2007-2013: S 320 CDI, S 350, S 450, S 500, S 550, S 420 CDI, S 600

Power steering malfunction

Thread Tools
 
Search this Thread
 
Rate Thread
 
Old Feb 28, 2021 | 05:56 PM
  #1  
Cuzzo's Avatar
Thread Starter
Junior Member
 
Joined: Nov 2020
Posts: 68
Likes: 6
W221 S class 550
Power steering malfunction

2011 Mercedes s550 4matic

Power steering malfunction see owners manuel is on the dash...what is this about? Anyone I checked the steering reservoir it dry on the dip stick. I filled it up..the steering malfunction went away for a few seconds and came back.....the steering is still hard to turn.



Last edited by Cuzzo; Feb 28, 2021 at 07:43 PM.
Reply
Old Mar 1, 2021 | 08:35 AM
  #2  
konigstiger's Avatar
Out Of Control!!
 
Joined: Jul 2003
Posts: 15,901
Likes: 4,634
From: North Scottsdale, AZ
'71 Pinto
Clear code if it returns steering angle sensor “may” need replacement.


Reply
Old Mar 1, 2021 | 10:36 AM
  #3  
BOTUS's Avatar
MBWorld Fanatic!
10 Year Member
Community Builder
Community Influencer
Liked
 
Joined: Aug 2014
Posts: 5,351
Likes: 1,690
S500
u need to understand the fluid loss...

I guess its ABC car, these need regular servicing with fluid and filter changes or the dampers wear our (with the debris causing seal damage), if its ABC the power steering and the ABC share the same reservoir and I think pump
Reply
Old Mar 1, 2021 | 10:45 AM
  #4  
konigstiger's Avatar
Out Of Control!!
 
Joined: Jul 2003
Posts: 15,901
Likes: 4,634
From: North Scottsdale, AZ
'71 Pinto
Not ABC per VIN.
Reply
Old Mar 3, 2021 | 02:49 AM
  #5  
The Thomas J's Avatar
Super Member
10 Year Member
Photogenic
Liked
Community Favorite
 
Joined: Jun 2013
Posts: 805
Likes: 77
From: Staten Island, NY
2010 MB S550, 2017 MB SLC 300
It sounds like the system needs to be bled. Clear the code and then clock the steering wheel from left to right, lock to lock. Check the fluid and add as needed, repeat.
Reply
Old Apr 20, 2021 | 08:38 PM
  #6  
KOOKIEMUNCER's Avatar
Junior Member
 
Joined: Aug 2019
Posts: 35
Likes: 20
W221 sclas
When this happened it was electric power steering pump gone bad also check the fuse
Reply
Old Apr 20, 2021 | 11:50 PM
  #7  
The Thomas J's Avatar
Super Member
10 Year Member
Photogenic
Liked
Community Favorite
 
Joined: Jun 2013
Posts: 805
Likes: 77
From: Staten Island, NY
2010 MB S550, 2017 MB SLC 300
The PS is electric? Not Hydraulic?
Reply
Old Apr 21, 2021 | 05:17 AM
  #8  
KOOKIEMUNCER's Avatar
Junior Member
 
Joined: Aug 2019
Posts: 35
Likes: 20
W221 sclas
Its combination of both. You should be able to hear the pump motor working when you turning the wheel. It felt harder then usual then just went bad out of nowhere while doing 80 mph on the highway
hopefully its a fuse in your case because that pump costs 2.5k
Reply
MB World Stories

The Best of Mercedes & AMG

story-0

New Mercedes-AMG SUVs Arrive With NEW V8 Engine: 12 Things You Need to Know

 Verdad Gallardo
story-1

8 Oddball Mercedes Ideas That Actually Made it to Production

 Verdad Gallardo
story-2

Dubai Tuner Gives the Mercedes G-Class An Entirely New Look

 Verdad Gallardo
story-3

Six Gift Ideas Your AMG Loving Dad or Grad Will Cherish

 
story-4

7 Craziest Things AMG Gas Ever Built

 Verdad Gallardo
story-5

New Electric Mercedes-AMG GT 4-Door Coupe Unveiled: 10 Things You Need to Know

 Verdad Gallardo
story-6

6 Mercedes Models That Did NOT Age Well (But Are Somehow Still Cool)

 Verdad Gallardo
story-7

Manual Mercedes? 6 Times Sindelfingen Let Drivers Have All The Fun

 Verdad Gallardo
story-8

Mercedes SLR McLaren 722 S Is Extremely Rare Example Modified by McLaren

 Verdad Gallardo
story-9

8 Classic Boxy Mercedes Designs That Have Aged Like Fine Wine

 Verdad Gallardo

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 01:57 PM.

story-0
New Mercedes-AMG SUVs Arrive With NEW V8 Engine: 12 Things You Need to Know

Slideshow: Mercedes-AMG's updated GLE 63 S and GLS 63 bring a new-generation V8, subtle design revisions, and familiar supercar-rivaling performance figures.

By Verdad Gallardo | 2026-06-17 12:52:51


VIEW MORE
story-1
8 Oddball Mercedes Ideas That Actually Made it to Production

Slideshow: Mercedes has never been afraid to experiment, and some of its strangest ideas turned out to be surprisingly successful.

By Verdad Gallardo | 2026-06-10 17:43:40


VIEW MORE
story-2
Dubai Tuner Gives the Mercedes G-Class An Entirely New Look

Sideshow: A Middle Eastern tuner has transformed the Mercedes-AMG G 63 into an open-top special, replacing nearly every exterior panel in the process.

By Verdad Gallardo | 2026-06-10 15:29:50


VIEW MORE
story-3
Six Gift Ideas Your AMG Loving Dad or Grad Will Cherish

Slideshow: Six gift ideas your AMG loving dad or grad will cherish.

By | 2026-06-03 17:26:18


VIEW MORE
story-4
7 Craziest Things AMG Gas Ever Built

Slideshow: Sometimes AMG builds fast sedans. Other times, it builds twin-turbo V12 land missiles and six-wheeled off-road monsters.

By Verdad Gallardo | 2026-05-26 17:59:58


VIEW MORE
story-5
New Electric Mercedes-AMG GT 4-Door Coupe Unveiled: 10 Things You Need to Know

Slideshow: Mercedes-AMG's new electric GT 4-Door Coupe trades combustion for software, synthetic noise, and more than 1,100 horsepower.

By Verdad Gallardo | 2026-05-20 20:08:15


VIEW MORE
story-6
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-7
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-8
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-9
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