Mercedes-Benz W211, R230 manual

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Legend

1	Brake Operating Unit	A7/3y1	Left front separation valve
2	Brake pressure simulator	A7/3y2	Right front separation valve
3	Pressure reservoir	A7/3y3	Front axle balance valve
7	Left front media separator	A7/3y4	Rear axle balance valve
	(dividing piston)	A7/3y6	Left front intake control valve
8	Right front media separators	A7/3y7	Left front outlet control valve
	(dividing piston)	A7/3y8	Right front intake control valve
A7/3	Traction system hydraulic unit	A7/3y9	Right front outlet control valve
A7/3b1	Front axle pre-pressure sensor	A7/3y10	Left rear intake control valve
A7/3b2	Reservoir pressure sensor	A7/3y11	Left rear outlet control valve
A7/3b3	Left front pressure sensor	A7/3y12	Right rear intake control valve
A7/3b4	Right front pressure sensor	A7/3y13	Right rear outlet control valve
A7/3b5	Left rear pressure sensor	B37/1	SBC pedal value sensor
A7/3b6	Right rear pressure sensor	S9/1	Stop lamp switch (4-pin)
A7/3m1	High-pressure charge pump

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Contents SBC Sensotronic Brake ControlObjectives Contents SBC Incorporates these Functions Advantages of SBC Advantages of SBC Advantages of SBC Driving with SBC Wake-Up Driving with SBC Pre-Drive Check PDC Driving with SBC Delayed Off Function Page Page SBC Components SBC W211 System OverviewR230 System Overview X11/4 Diagnosis Connection Brake Operating Unit BOU Brake Operating Unit Master Cylinder Fluid Reservoir Cover Pedal Value Sensor B37/1 Fluid reservoir BOU Tandem Master CylinderNormal Braking Light Pressure Normal Braking Increased Pressure Normal Braking Strongest Feedback Emergency Operation Traction System Hydraulic Unit A7/3 Traction System Hydraulic Unit A7/3 Page Emergency Operation Circuit Brake Pressure Supply Three Pressure Stages Pressure Apply Rear Wheels Pressure Apply Front Wheels Pressure Apply All Wheels Pressure Hold All Wheels Pressure Reduction All Wheels Temperature Compensation Deactivation Deactivation Pressure at A7/3b2 System Activation System Activation Activation Left Front Activation Right Front Activation Right Rear Activation Left Rear Activation Recharge Proper system bleeding is critical Follow directions in SDS Bleeding the Brake SystemEquipment Required Connect equipment and follow steps in SDS Acronym List Appendix