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

ABC Flush Tool

Thread Tools
 
Search this Thread
 
Rate Thread
 
Old Mar 20, 2016 | 01:50 PM
  #1  
Wonders's Avatar
Thread Starter
Junior Member
 
Joined: Dec 2013
Posts: 60
Likes: 0
W221 S600
ABC Flush Tool

AGA Mercedes Benz ABC Flush Tool



Hi guys, has anyone on here used this tool, want to flush my ABC but mercedes tell me there is no scheduled service for my system, does an 07 S600 have an ABC filter like shown.
Reply
Old Mar 20, 2016 | 11:03 PM
  #2  
Mike5215's Avatar
MBWorld Fanatic!
 
Joined: May 2008
Posts: 7,653
Likes: 560
2016 C300
The ultimate ABC flush tool:

Reply
Old Mar 21, 2016 | 07:59 AM
  #3  
Wonders's Avatar
Thread Starter
Junior Member
 
Joined: Dec 2013
Posts: 60
Likes: 0
W221 S600
Stupid!
Reply
Old Mar 21, 2016 | 08:33 AM
  #4  
Mike5215's Avatar
MBWorld Fanatic!
 
Joined: May 2008
Posts: 7,653
Likes: 560
2016 C300
Well yeah, you'd still need to fill in the make and model part with a Sharpie. Otherwise the sign makes no sense.
Reply
Old Mar 21, 2016 | 09:40 AM
  #5  
alx's Avatar
alx
MBWorld Fanatic!
20 Year Member
Liked
Loved
Community Favorite
 
Joined: Dec 2004
Posts: 4,268
Likes: 253
You don't need a tool. Unhook the reservoir return hose and put it into a bucket. Top off reservoir and start rodeo. Top off reservoir as needed. Make sure you really keep at it as if you run empty you can damage tandem pump. Run until clear fluid comes out of return hose. About 8-10 quarts of Pentosin.

Edit- or follow Mike's advice. 100% results guaranteed

Last edited by alx; Mar 21, 2016 at 09:43 AM.
Reply
Old Mar 21, 2016 | 11:00 AM
  #6  
Wonders's Avatar
Thread Starter
Junior Member
 
Joined: Dec 2013
Posts: 60
Likes: 0
W221 S600
Thanks, does an 07 S600 have an ABC filter and does this process flush power steering as well.
Reply
Old Mar 21, 2016 | 11:05 AM
  #7  
bha's Avatar
bha
Senior Member
15 Year Member
 
Joined: Aug 2009
Posts: 427
Likes: 57
13 GL350, 14 SL550
I did it the way ALX mentioned. Very easy.

Keep the fluid full and don't let it run dry. If you uncap all of the bottles and have them ready, you can do it with one person. You need to pour relatively quickly, but you can definitely do it by yourself if you are prepared.

I went to home depot and got a 5gal bucket + a lid. Plus a 10ft of clear vinyl tubing.

Put the vinyl tubing on the return line and wire tie it tightly so it doesn't come off. Drop the other end in the HD bucket and do the flush.

Then put the lid on the HD bucket and drop the fluid off wherever they accept motor oil for recycling.
Reply
Old Mar 21, 2016 | 11:31 AM
  #8  
Wonders's Avatar
Thread Starter
Junior Member
 
Joined: Dec 2013
Posts: 60
Likes: 0
W221 S600
Thanks bha,


was there a filter and did steering fluid get flushed at same time
Reply
MB World Stories

The Best of Mercedes & AMG

story-0

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

 Verdad Gallardo
story-1

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

 Verdad Gallardo
story-2

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

 Verdad Gallardo
story-3

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

 Verdad Gallardo
story-4

8 Classic Boxy Mercedes Designs That Have Aged Like Fine Wine

 Verdad Gallardo
story-5

Flawlessly Restored Mercedes 190E Evo II Heads to Auction

 Verdad Gallardo
story-6

Electric Mercedes C-Class Unveiled: 11 Things You Need to Know

 Verdad Gallardo
story-7

Mercedes EQS Gets A Major Update: Everything You Need to Know

 Verdad Gallardo
story-8

5 Underrated Mercedes-Benz Models That Don't Get the Love They Deserve

 Verdad Gallardo
story-9

Mercedes 300D Has Pushed Well Past 1 Million Miles and It Ain't Stopping

 Verdad Gallardo
Old Mar 21, 2016 | 11:38 AM
  #9  
bha's Avatar
bha
Senior Member
15 Year Member
 
Joined: Aug 2009
Posts: 427
Likes: 57
13 GL350, 14 SL550
Yes, there is a filter. When you pop off the ABC reservoir lid, the filter is attached to the underside of it. You will see what I mean when you pop the lid off.

Pull hard on the filter and it comes off. Then push the new one on and you're done.

I flushed the system with the existing filter because I didn't want to contaminate the new filter with old fluid.

Get the latest part # for the filter, because a few years ago (5-7 years?) they updated the filter and it has smaller holes to trap more gunk. The new part # is much better. Most places probably don't have the old filter any more, but be careful if you buy from eBay or places like that. Any dealer or online parts store (ECS Tuning, FCP Euro, AutohausAZ) will for sure only have the new filter.

Steering uses the same pump, but it has a separate reservoir. You'll have to flush that separately.

One way to do it (that I use) is whenever I'm under the hood I suck out the reservoir of fluid and pour in new fluid. If you do it 2x/yr when you do oil changes, you end up replacing the fluid completely every 12-18 months which is perfectly fine. You can of course go through more work to do it the "right" way which is to disconnect the return line and flush. I find it much easier to just swap fluid every time and having year-old PS fluid is fine with me as nobody flushes it every year anyhow.
Reply
Old Mar 21, 2016 | 11:48 AM
  #10  
Wonders's Avatar
Thread Starter
Junior Member
 
Joined: Dec 2013
Posts: 60
Likes: 0
W221 S600
that's great, thanks.


wonder why Mercedes say theres no service for ABC fluid when there clearly is, my steering fluid has gone brown, not green like suspension fluid so want to flush complete system, no problems with it but steering fluid shouldn't be brown should it.
Reply
Old Mar 21, 2016 | 12:09 PM
  #11  
alx's Avatar
alx
MBWorld Fanatic!
20 Year Member
Liked
Loved
Community Favorite
 
Joined: Dec 2004
Posts: 4,268
Likes: 253
Abc needs to be flushed every 35-50k miles. Contrary to what mb states it is not filled for life and if you don't flush it on a regular basis the valve blocks will gunk up and the tandem pump will quit.
Reply
Old Mar 21, 2016 | 01:57 PM
  #12  
FCPEuro's Avatar
Former Vendor of MBWorld
 
Joined: Dec 2014
Posts: 1,142
Likes: 154
Mercedes
Gents,

The filter is located here if it helps:

https://www.fcpeuro.com/products/mer...ter-0031846101




--Kyle
Reply
Old Mar 22, 2016 | 10:31 AM
  #13  
mercedesbenzs55's Avatar
MBWorld Fanatic!
 
Joined: Dec 2015
Posts: 1,381
Likes: 32
Acura TL 2008 - Acura MDX 2012
Lightbulb

Originally Posted by Mike5215
The ultimate ABC flush tool:

lol! He's saying that cause he's upgrading to a C-class with airmatic.

Last edited by mercedesbenzs55; Mar 22, 2016 at 10:33 AM.
Reply
Old Mar 22, 2016 | 12:22 PM
  #14  
Mike5215's Avatar
MBWorld Fanatic!
 
Joined: May 2008
Posts: 7,653
Likes: 560
2016 C300
Originally Posted by mercedesbenzs55
lol! He's saying that cause he's upgrading to a C-class with airmatic.
You should get one of those ABC flush tools. Your car doesn't need it, but when has that ever stopped you?
Reply
Old Mar 22, 2016 | 01:36 PM
  #15  
mercedesbenzs55's Avatar
MBWorld Fanatic!
 
Joined: Dec 2015
Posts: 1,381
Likes: 32
Acura TL 2008 - Acura MDX 2012
I'm still working on the muffler bearings.
Reply
Old Apr 1, 2026 | 09:19 PM
  #16  
Srslol's Avatar
Newbie
 
Joined: Mar 2023
Posts: 2
Likes: 0
W211 W216 W212
Talking W221/C216

Visual representation how I done it.

Thanks to alx saved me from purchasing a tool

Simply lift power steering reservoir and remove the bracket held with 2x 10mm nut
and the ABC reservoir bracket 1x 10mm nut
12v oil pump was used for filling and suction fluid

Blanked off the return reservoir

It is a bit messy though.

Reply
Old Apr 1, 2026 | 11:05 PM
  #17  
JohnLane's Avatar
MBWorld Fanatic!
10 Year Member
Community Builder
Community Influencer
Loved
 
Joined: Feb 2012
Posts: 2,641
Likes: 1,224
From: Phoenix
222 S-65
Your 221 car has bleeders at each corner of the car. Set car to ‘Tip toes.’ With the car on a roll on roll off hoist so you can safely get access to each of them... Open the bleeder and let it drain via a hose to a container. The car will drop at each corner. Don’t earn a Darwin Award not paying attention. Start car to level up, refill fluid and repeat until fresh fluid comes out each corner. This happens after sucking old fluid out of the reservoir and fitting a fresh filter.

I do ABC oil annually. I put 20,000 a year on my car.
Reply
Old Apr 2, 2026 | 04:55 AM
  #18  
BOTUS's Avatar
MBWorld Fanatic!
10 Year Member
Community Builder
Community Influencer
Liked
 
Joined: Aug 2014
Posts: 5,322
Likes: 1,678
S500
the cheap real tool - flushes it all at pressure whilst operating the struts so all the crap is agitated so it comes out to save wearing strut seals in 20 mins with almost no tools

you certainly never waste your time with a ramp, or unbolting wheels - why do it any other way ?



Last edited by BOTUS; Apr 2, 2026 at 04:58 AM.
Reply

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 08:34 AM.

story-0
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-1
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-2
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-3
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-4
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
story-5
Flawlessly Restored Mercedes 190E Evo II Heads to Auction

Slideshow: The 190E Evolution II shows how a homologation necessity became a six-figure collector icon.

By Verdad Gallardo | 2026-04-22 17:53:47


VIEW MORE
story-6
Electric Mercedes C-Class Unveiled: 11 Things You Need to Know

Slideshow: Mercedes is turning one of its core nameplates electric, and the details show just how serious this shift is.

By Verdad Gallardo | 2026-04-21 13:58:06


VIEW MORE
story-7
Mercedes EQS Gets A Major Update: Everything You Need to Know

Slideshow: Faster charging, longer range, and a controversial steer-by-wire system define the latest evolution of Mercedes-Benz EQS.

By Verdad Gallardo | 2026-04-15 10:35:34


VIEW MORE
story-8
5 Underrated Mercedes-Benz Models That Don't Get the Love They Deserve

Slideshow: These overlooked Mercedes-Benz models never got the spotlight, but they quietly delivered more than most remember.

By Verdad Gallardo | 2026-04-13 19:35:45


VIEW MORE
story-9
Mercedes 300D Has Pushed Well Past 1 Million Miles and It Ain't Stopping

Slideshow: A well-used 1991 Mercedes-Benz 300D with more than one million miles is now looking for a new owner, and it still appears ready for more.

By Verdad Gallardo | 2026-04-10 10:05:15


VIEW MORE