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As an owner of an ABC car from 93K miles to 186K miles... Filter and fluid change every 5 years, 50K miles is more than enough. And of course in the case of an accumulator or strut replacement.
I mean, ABC/MBC cars are a nightmare and nobody should buy them! They will bankrupt you!
Last edited by Turboaction; Apr 4, 2025 at 07:52 PM.
Worth noting.... MBC fluid and filter in the 222 car.... much easier than the 221. The filter is accessed via the top of the reservoir. Looks like the same filter as the 221. Suck the fluid out of reservoir, refill, rodeo. Easy.
What Fluid should I use, Obviously hydraulic fluid but is it available at MB Dealerships or would I be better off getting it at a parts store like Autozone or Oreillys? Is it necessary to change the filter and how? or just evacuate out the fluid and add new fluid. My car is a 2018 S560 with the magic body control. Currently I have 83K miles on the car, had a problem with MBC around 50K miles that the passenger front was lower than the drivers side, it was under warrantee and the dealer fixed it, they said they simply adjusted it up higher, no idea if they ran it through Rodeo mode or changed the Fluid, they seem very secretive about MBC and say no maintenance is required that I'm best off leaving it sealed so as not to let in any moisture. This car is a long term keeper for me and trying to keep it as trouble free as possible.
Thanks Tom. I guess I’ll get a couple quarts of this and the ten dollar orian evacuated pump and suck the fluid out of the mbc reservoir and replace and maybe do the power steering fluid as well. This should work for that too. Any idea how to activate Rodeo mode incase I get a little air in the system? Maybe I’ll need 3 quarts with doing the power steering fluid?
Thanks Tom. I guess I’ll get a couple quarts of this and the ten dollar orian evacuated pump and suck the fluid out of the mbc reservoir and replace and maybe do the power steering fluid as well. This should work for that too. Any idea how to activate Rodeo mode incase I get a little air in the system? Maybe I’ll need 3 quarts with doing the power steering fluid?
Electric power steering in 222 cars. No fluid to change. (Pity as 221 had steering feel) Rodeo happens via XENTRY. MBC fluid P/N is 001-989-24-03-09. Reservoir in my S-65 holds just over a liter of fluid. Be sure to replace the filter at the same time. Get all the dirt out of grooves in cap for reservoir before removal. The retaining clip comes off the top.... sealed with two o-rings. Be gentle turning as you pull up. Very easy. I sucked out fluid with an inexpensive Harbor Freight electric pump, topped up.... started it...rodeo.... shut down and Repeat... twice. I will do this again as soon as I get a filter to replace what is in there.
221 S-65 had bleeders at every corner that made it easy to get old fluid out. With the hose on the bleeder and fresh fluid in reservoir I opened the bleeder (car on alignment stands) well aware that corner of the car will drop as fluid pressure drops. Close it and start engine. Repeat until fresh fluid comes out.
222 does not have bleeders so it will be fresh fluid in reservoir + rodeo as many times as it takes to have fresh fluid after rodeo.
5 Liter container is selling online for just under $100. A couple of the online retailers are selling 2 x 5 liter bottles and the ABC/MBC filter for under $200.
The filter is the same for all three generations.
MBC filter replacement... 10 minutes start to finish with sucking out the 1.4 (or so) liter of fluid in the reservoir and refilling.
Clip comes off the top of the reservoir. Clean up around the cap. Don’t need any dirt getting in the oil. Two pair of pliers to twist and pull the filter housing out. Pair of green O-Rings at top of it to seal.
There are O -rings on both ends of the filter that nestle into the plastic guy around the filter.
Very easy. Yes; the filter is available separately.
I got a can of the 11s fluid on Amazon. It holds 33.8 oz of hydraulic fluid. My plan is to take that exact amount out of the reservoir sucking it out from the bottom with an electric pump where I figure any water or debris should be. I will add in the contents of the can after put the cap back on the reservoir and take the car out for a drive in curve mode on a curvy road. I can’t do rodeo mode as I don’t have the diagnostic tool to plug in. Should this approach be adequate.? I won’t be taking all the fluid out of the reservoir so I figure there is no reason air should get into the system. If this works ok in a couple more weeks I’ll get another can of 11S and do the same thing again. This way there should be mostly new fluid in the system should be fairly simple and effective. The other thing I’m thinking is I could cycle the suspension up and down with the button on the center console after the fluid change. Is there any other diagnostic tool that is less money to put the car into Rodeo mode? sentry is around $2k.
on another note I think John Lane had said he had to replace an accumulator and it was like a ten minute job. I was thinking about doing this as preventative maintainance. Would I get the accumulator at the dealer parts dept or is aftermarket less money and where is it located and how is it changed. Thanks in advance.
Last edited by 2012 merc amg; Nov 18, 2025 at 11:48 PM.
2019 AMG S 65 and too many other vehicles to list here in this small box
Someone alerted the forum to a sale on the CHF 11S fluid earlier this summer from Petroleum Service Company. I ordered a case (smallest quantity) which is 6 liter cans for $90 with tax and shipping included. Cans arrived in good condition with quality packaging. The price has gone back to around $100 but still pretty low compared to scamazon. https://petroleumservicecompany.com/...titan-chf-11s/
I also found this tool I'm going to purchase and use to completley flush the fluid. Appears to be a quality product to perform an improved method of fluid maintenance. https://agatools.com/products/aga-mb-abc-ft
I have no experience with the AGA company but it appears to have some interesting and useful tools everyone might want to check out.
Wow that looks like a great investment. I think I’ll buy that and do the flush more thoroughly the way I was planning on doing it is just a drop in the bucket. Before doing it I need to buy a new filter and replace that too. Anyone know where I can get a filter for a 222.? It’s a 2018 S560 with mbc of course. I’ll do a search on eBay and Amazon but I doubt either will have it. Most people don’t service these systems is my guess. Dealers refuse to touch mbc unless there is an issue and at that point it’s big bucks to replace suspension components.
2019 AMG S 65 and too many other vehicles to list here in this small box
Originally Posted by 2012 merc amg
Wow that looks like a great investment. I think I’ll buy that and do the flush more thoroughly the way I was planning on doing it is just a drop in the bucket. Before doing it I need to buy a new filter and replace that too. Anyone know where I can get a filter for a 222.? It’s a 2018 S560 with mbc of course. I’ll do a search on eBay and Amazon but I doubt either will have it. Most people don’t service these systems is my guess. Dealers refuse to touch mbc unless there is an issue and at that point it’s big bucks to replace suspension components.
The only other advice I can share is that countless people have indicated that cleanliness is the upmost importance when opening the reservoir and changing the fluid and filter. The smallest amount of debris in the system can cause catastrophic results.
Strive for surgical level of cleanliness when attempting this task.
Good advice. I’m gonna clean all around the tank and cap before opening it. I just remembered that the filter is part of the tank on the 222s with mbc. Hence not able to find just a filter for it.
2019 AMG S 65 and too many other vehicles to list here in this small box
Originally Posted by 2012 merc amg
Good advice. I’m gonna clean all around the tank and cap before opening it. I just remembered that the filter is part of the tank on the 222s with mbc. Hence not able to find just a filter for it.
There's a filter on the W222 that should be replaced. Scroll up and look at the post from @JohnLane, he shows a pic of the filter and the part number.
Also, watch the video from AGA for the instructions on the MBC tool. You must remove the filter and insert the tool where the filter is normally located. This is what allows the fluid to be replaced without bleeding each line.
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