C2131 Fault Code
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Joined: Dec 2013
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W211 E200 Kompressor, W124 200E, W123 230C
C2131 Fault Code
Hi. I have a 2003 E240 and got the service brakes warning. Deactivated SBC, Depressurized, Changed the pads and bled using the MB Star Diagnostics and came up with a C2131 (Pressure Reservoir Faulty) code.
Changed the Pressure Reservoir as advised by the MB Star and also after reading some forum posts to confirm that this should be done but still we are not getting the fault cleared.
The old pressure reservoir had a "pretensioning pressure" of 64 bar... Specific values should be 72 to 102 bar.
The NEW Pressure Reservoir is only giving me 62 bar. We've bled using the Star and also a pressure bleeder but the fault and warning are still there. Does this need to be programmed or something?
Thanks in advance for any tips or recommendations.
Changed the Pressure Reservoir as advised by the MB Star and also after reading some forum posts to confirm that this should be done but still we are not getting the fault cleared.
The old pressure reservoir had a "pretensioning pressure" of 64 bar... Specific values should be 72 to 102 bar.
The NEW Pressure Reservoir is only giving me 62 bar. We've bled using the Star and also a pressure bleeder but the fault and warning are still there. Does this need to be programmed or something?
Thanks in advance for any tips or recommendations.
Out Of Control!!
Joined: Jul 2003
Posts: 15,901
Likes: 4,633
From: North Scottsdale, AZ
'71 Pinto
Try performing STAR air release routine (do not disrupt while in progress) to clear reservoir internal check valve, if code persists try deactivating and reactivating SBC.
