Having brake problems and dealer says it's not the SBC.
Newbie
Joined: Mar 2014
Posts: 10
Likes: 0
06" CLS 500
sbc reservoir
I replaced mine myself and did not bleed the system. The error went away and the car drive perfectly. After however many months I swapped out all the fluid ( regular maintenance ) and bleed the system and it felt just the same as before so I guess the SBC has a was of purging any air inside the valve body.
Junior Member
Joined: Jan 2015
Posts: 20
Likes: 18
From: Near Richmond, VA
2015 S550 4matic / 2003 E55 AMG
I'm needing to change out my SBC High Pressure Reservoir .
I've had zero luck so far in finding anything on the correct and safe procedures in changing this thing. It clearly reads on the reservoir to NOT unscrew it since it's under high pressure.
I'm wondering if you can wrap a large towel around it and slowly unscrew it to release the pressure? Or is that asking for disaster?
I've had zero luck so far in finding anything on the correct and safe procedures in changing this thing. It clearly reads on the reservoir to NOT unscrew it since it's under high pressure.
I'm wondering if you can wrap a large towel around it and slowly unscrew it to release the pressure? Or is that asking for disaster?
Newbie
Joined: Sep 2011
Posts: 10
Likes: 0
From: Florida
e350
I replaced mine myself and did not bleed the system. The error went away and the car drive perfectly. After however many months I swapped out all the fluid ( regular maintenance ) and bleed the system and it felt just the same as before so I guess the SBC has a was of purging any air inside the valve body.
Newbie
Joined: Sep 2011
Posts: 10
Likes: 0
From: Florida
e350
I'm needing to change out my SBC High Pressure Reservoir .
I've had zero luck so far in finding anything on the correct and safe procedures in changing this thing. It clearly reads on the reservoir to NOT unscrew it since it's under high pressure.
I'm wondering if you can wrap a large towel around it and slowly unscrew it to release the pressure? Or is that asking for disaster?
I've had zero luck so far in finding anything on the correct and safe procedures in changing this thing. It clearly reads on the reservoir to NOT unscrew it since it's under high pressure.
I'm wondering if you can wrap a large towel around it and slowly unscrew it to release the pressure? Or is that asking for disaster?
Newbie
Joined: Jul 2014
Posts: 13
Likes: 1
From: Alabama
2008 E63 AMG
I'm needing to change out my SBC High Pressure Reservoir .
I've had zero luck so far in finding anything on the correct and safe procedures in changing this thing. It clearly reads on the reservoir to NOT unscrew it since it's under high pressure.
I'm wondering if you can wrap a large towel around it and slowly unscrew it to release the pressure? Or is that asking for disaster?
I've had zero luck so far in finding anything on the correct and safe procedures in changing this thing. It clearly reads on the reservoir to NOT unscrew it since it's under high pressure.
I'm wondering if you can wrap a large towel around it and slowly unscrew it to release the pressure? Or is that asking for disaster?
My 06 E320 CDI (313K miles and ticking!) just started displaying the "Brake - Visit Workshop" message. I used my MB Star's DAS tool for detailed information and it brought up the Fault Code C2131 - "Pressure Reservoir faulty".
The Pressure reservoir can be replaced. The procedure in the attached PDF is from the MB Star diagnostic tool's WIS (Workshop Information System). It is important to first de-activate the SBC system and then replace the Pressure Reservoir. I hope this helps. Take care guys.
Let me know if you need any additional information on this procedure.
Last edited by Avatar2014; Dec 11, 2015 at 05:00 PM.
Newbie
Joined: Feb 2016
Posts: 7
Likes: 0
2006 W219
DIY sbc or accumulator replacement
Just completed this job. I took the entire SBC pump off. Used 11mm open face wrench for brake lines. There is a youtube video showing how take the pump off. "You Do Not Need Fancy Equipment". Disconnect your battery from the trunk before you begin. This is equivalent to deactivating the SBC with star diagnostic. Take your time and ease the pump out as to not damage or bend the brake lines. Use 12mm for one other brake line on the pump. Use a 17mm for the accumulator. Reverse steps once pump is off. Once everything is hooked back up. Reconnect battery and let the high tech computer bleed the system. I did bleed my brakes just to be on the safe side. I did have some air in my lines. Once done, if this was truly your problem the error should go away on its own. $1800.00 job at the stealership reduced to $190.00 for part and my own labor. Hope this helps take a bite out of MB. Its highway robbery what they are doing.
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MBWorld Fanatic!
Joined: Aug 2012
Posts: 1,790
Likes: 109
From: DownEast Maine
CLS 55 AMG E500 ML320
So just to be clear, You removed the accumulator that says "high pressure do not remove" and nothing bad happened because the battery was disconnected? The battery under the hood is supposed to be for the brakes?
Newbie
Joined: Feb 2016
Posts: 7
Likes: 0
2006 W219
Exactly! Just disconnect the battery in the trunk and you are good to go. Good luck. I only needed to replace my accumulator but it was on there pretty tight so I took the entire pump out by way of disconnecting all the brake lines. If you can remove the accumulator without taking the pump out of the car you save yourself time and less messy job. I would still bleed the brakes though after you install the new part. Just my 2cents. It's not that hard of a job........
MBWorld Fanatic!
Joined: Aug 2012
Posts: 1,790
Likes: 109
From: DownEast Maine
CLS 55 AMG E500 ML320
Thanks man, I've been wondering about that for a long time. I know it will come up someday. I'll have to buy star or take it in to bleed the brakes. I built a pressure bleeder for it once, but it looked like I was going to blow the tank before any fluid came out.
