SL-Class (R230) 2003 -- 2012: Discussion on the SL500, SL550, SL600

SL/R230: Brake fault code C261D

Old Feb 17, 2015 | 11:32 PM
  #1  
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03 sl 500
Brake fault code C261D

i took my sl 500 2003 to The work shop
For put its 20" niche wheels On, suddenly the brakes stop working, the fault code is C261D, someone can give a hand? What this code means??

Thanks and sorry my english writing
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Old Feb 26, 2015 | 08:05 PM
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could the wheels be interfering with the caliper?
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Old Aug 25, 2020 | 04:34 PM
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SL55AMG
Old thread i know , i have this code too , i know what it means but has anyone else seen this please ??



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Old Aug 25, 2020 | 09:09 PM
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Originally Posted by Tony Ryan
Old thread i know , i have this code too , i know what it means but has anyone else seen this please ??




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Old Aug 25, 2020 | 09:11 PM
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just leaks
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Old Aug 26, 2020 | 05:12 AM
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Thanks . I was hoping for a slightly more expanded version , we spent 3 hours going through the brake system and bleeding it , the operator tried several ways to do this and used the tablet above throughout . The brake pressure test showed we could apply over the required 90 bar needed but the Red lights on the dash persisted .
If youve seen this code and say just leaks , does that mean a replacement master cylinder cured the problem , is it a common issue you see regularily ??
Cheers
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Old Aug 26, 2020 | 05:30 AM
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Originally Posted by Tony Ryan
Thanks . I was hoping for a slightly more expanded version , we spent 3 hours going through the brake system and bleeding it , the operator tried several ways to do this and used the tablet above throughout . The brake pressure test showed we could apply over the required 90 bar needed but the Red lights on the dash persisted .
If youve seen this code and say just leaks , does that mean a replacement master cylinder cured the problem , is it a common issue you see regularily ??
Cheers
Hi
no problem
I gave a response as the original post, short
I would expect a more expanded initial post
What is the cause that you touched this
What have you done, not sure about "the operator tried several ways to do this" as there is only one way explained in WIS
That you can apply that pressure doesn't mean it holds pressure
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Old Aug 26, 2020 | 06:14 AM
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Big Red Brake warnings on Dash is the reason we needed to do this , i assumed Brakes needed bleeding as one of the Brake lines gave up .
The last statement is what i was after , the code points to the master cylinder- we read on the machine that the Travel of the pedal was out of Value , the operator explained that the Master cylinder could be the issue , he had never seen this code or had this problem in over 20 years at MB , my question is to the Forum " is this a common issue " , the hope being that the prolonged period of being laid up prior to my ownership might explain this , have you seen or dealt with this before , does a replacement Master cylinder BOU cure this ?
Thanks for the reply .
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Old Aug 26, 2020 | 06:28 AM
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Originally Posted by Tony Ryan
Big Red Brake warnings on Dash is the reason we needed to do this , i assumed Brakes needed bleeding as one of the Brake lines gave up .
The last statement is what i was after , the code points to the master cylinder- we read on the machine that the Travel of the pedal was out of Value , the operator explained that the Master cylinder could be the issue , he had never seen this code or had this problem in over 20 years at MB , my question is to the Forum " is this a common issue " , the hope being that the prolonged period of being laid up prior to my ownership might explain this , have you seen or dealt with this before , does a replacement Master cylinder BOU cure this ?
Thanks for the reply .
alright
with these details, yes, you can go for a master cylinder replacement
rare issue indeed
buy a used one from ebay of course

good luck

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Old Aug 26, 2020 | 06:29 AM
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Great , thanks , as this is a rare issue i would hope that a used Master wouldnt suffer from the same , worth a try , thanks for the advice .
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Old Aug 29, 2020 | 03:47 PM
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Another BOU Master Cylinder sourced, bought and fitted ,lets see !




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Old Aug 29, 2020 | 03:58 PM
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Originally Posted by Tony Ryan
Another BOU Master Cylinder sourced, bought and fitted ,lets see !


cross fingers
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Old Sep 5, 2020 | 08:44 AM
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Sorted, £205 inc the master cylinder fixed the problem !
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Old Feb 1, 2022 | 11:46 PM
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05 Mercedes Benz SL 500
C261c or C261d

Originally Posted by Tony Ryan
Old thread i know , i have this code too , i know what it means but has anyone else seen this please ??


It stand for Master cylinders have gone bad I took mine in cause of the SBC unit is on recall and yes it clover under warranty I had to go back to MB and tell them to change mine and guess find out the master cylinder is as cover
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