W211 AMG Discuss the W211 AMG's such as the E55 and the E63

Fault Code: 009128

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Old 04-19-2016 | 12:52 PM
  #1  
ForKyleigh's Avatar
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Joined: Nov 2015
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From: Wisconsin
2004 E55 AMG
Fault Code: 009128

Here is a copy of the Fault Report I get using my scanner on my phone:

IC - Instrument cluster (MB: 2115408011)
Event: The supply voltage of the control unit is too low (undervoltage). / Fault: The
brake fluid level is not o.k.
Code: 009128

I get the Brake... Visit Workshop message on the dash. Can anyone give me more information on this. I have verified that my brake fluid is NOT low. But I have read that i can be low in a specific caliper, which I assume bleeding would take care of. I have looked for a fluid level sensor for the E55 but having issues finding a part number. Thanks for the help.
Old 04-20-2016 | 01:18 PM
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ForKyleigh's Avatar
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From: Wisconsin
2004 E55 AMG
Anyone?
Old 04-23-2016 | 05:22 AM
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StarvingArtist's Avatar
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From: DownEast Maine
CLS 55 AMG E500 99 ML320
Check the small battery under the cabin air filter. It runs the SBC.

Last edited by StarvingArtist; 04-23-2016 at 05:28 AM.

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