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Sensotronic Brake Control
218 HO SBC (WJB) 09-30-02
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These technical training materials are current as of the date noted on the materials, and may be revised or updated without notice.
Always check for revised or updated information.
To help avoid personal injury to you or others, and to avoid damage to the vehicle on which you are working, you must always refer
to the latest Mercedes-Benz Technical Publication and follow all pertinent instructions when testing, diagnosing or making repair.
Illustrations and descriptions in this training reference are based on preliminary information and may not correspond to the final US
version vehicles. Refer to the official introduction manual and WIS when available.
Copyright Mercedes-Benz USA, LLC, 2002
WIS document numbers shown apply to WIS Version G.04.06 11/01 USA/CDN
Reproduction by any means or by any information storage and retrieval system or translation in whole or part is not permitted
without written authorization from Mercedes-Benz USA, LLC or its successors.
Published by Mercedes-Benz USA, LLC
Printed in U. S.A.
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Warning Display 10
Brake Operating Unit (BOU) 12
Pedal Value Sensor 14
Hydraulic Unit (A/3) 18
Emergency Operation 19
Pressure Supply 20
ABS Control 21
ASR, EBR, ESP Functions 22
Temperature Compensation 23
Predrive Check (PDC) 25
Delayed Off 26
Warning Buzzer 30
Bleeding the system 31
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ABS (Anti lock Brakes 1984)
+ ASR (Automatic Slip Regulation 1991)
+ ETS (Electronic Traction System 1994)
+ ESP (Electronic Stability Program 1996)
+ BAS (Brake Assist System 1998)= SBC (Sensotronic Brake Control 2002)
SBC = Sensotronic Brake Control, the next level of
brake control !
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Advantages of SBC
• Improves metering of required brake pressure
– each wheel can be precisely controlled
• Improved BAS function
– monitors release of accelerator pedal & application of
– maximum pressure available immediately
– Pre-filling of system (overcoming play)
– when the BAS function is anticipated (identified by the
rapid release of the gas pedal), slight pressure is