Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2003 Mercedes Benz CLK430FACTORY OEM SERVICE PROCEDURE
Section 10 (Anti-Lock/Traction Control)
WARNING: This page does not describe the selected car, but rather 26 other vehicles, including the 1999 Mercedes-Benz SLK230, 1999 Mercedes-Benz ML430, 1999 Mercedes-Benz ML320, 1999 Mercedes-Benz E430, and 1999 Mercedes-Benz E320. However, it is still accessible from the selected car via links, so may be relevant.
- Description
- Operation
- Acceleration Slip Regulation V
- Electronic Control Unit
- Electronic Stability Program
- Electronic Traction Support (E320 4-MATIC)
- High Pressure Pump/Return Pump
- Hydraulic Unit
- Inlet Solenoid Valve
- Lateral Acceleration Sensor
- Pressure Holding/Pressure Reduction Solenoid Valves
- Pressurizing Solenoid Valves
- Speed Sensor
- SPS P-Valve
- Steering Angle Sensor
- Switchover Solenoid Valves
- Servicing
- Bleeding Brake System
- * Please Read First *
- Cl500, S320, S420, S500 & SL500 (With Esp)
- Cl500, S320, S420, S500, SL320 & SL500 (Without ASR V Or Esp) Cl500, S320, S420, S500, SL320 & SL500 (With ASR V & ETS) SLK230 E300D, E320, E420 & E430 (Without ASR V) C230 & C280 CLK230 E300D, E320, E420 & E430 (Without Esp) E300D, E320 & E430 (With Esp)
- SL320 & SL500 (With ASR V)
- Cl500, S320, S420 & S500 (With ASR V)
- C230 & C280 (With ASR V)
- Cl500, E300D, E320, E420, E430, S320, S420, S500, SL320 & SL500 (With Esp)
- Trouble Shooting
- Visual Inspection
- Abs, ASR V Or ETS Warning Light Illuminates While Engine Is Running
- Abs, ASR V Or ETS Warning Light Illuminates While Driving And Does Not Go Out
- Abs, ASR V Or ETS Warning Light Illuminates While Driving And Then Goes Out
- Warning Indicator Lights Do Not Illuminate When Ignition Switch Is In Run Position
- Abs Warning Light Illuminates After Brake Test Or Dynamometer Use
- ETS Warning Light Illuminates While Driving Then Goes Out After A While (ETS Only)
- Self-Diagnostics
- System Tests
- * Please Read First *
- Test 1: Traction Systems Control Module Voltage Supply Circuit 87)
- Test 2: Traction Systems Control Module Voltage Supply Circuit 30)
- Test 3: Data Bus Instrument Cluster (Vehicles Without Can Connection To Instrument Cluster)
- Test 4: Diagnostic Output
- Test 5: Hydraulic Unit Solenoid Valves Voltage Supply
- Test 6: High Pressure/Return Pump Relay Voltage Supply
- Test 7: SPS P-Valve Coil Resistance (Cl500, E300D, E320, E420 & E430)
- Test 8: Abs Lateral Acceleration Sensor Voltage Supply (S420 S500)
- Test 9: Master Brake Switchover Valve Internal Resistance S420 & S500)
- Test 10: ETS Signal (Vehicles Without Can Connection To Instrument Cluster)
- Test 11: Left Front Axle VSS Sensor Internal/Insulation Resistance
- Test 12: Left Front Axle VSS Sensor Output
- Test 13: Right Front Axle VSS Sensor Internal/Insulation Resistance
- Test 14: Right Front Axle VSS Sensor Output
- Test 15: Rear Axle VSS Sensor Internal/Insulation Resistance Abs Only)
- Test 16: Left Rear Axle VSS Sensor Internal/Insulation Resistance (With ASR Or ETS)
- Test 17: Left Rear Axle VSS Sensor (Without ASR Or ETS)
- Test 18: Left Rear Axle VSS Sensor (With ASR Or ETS)
- Test 19: Right Rear Axle VSS Sensor Internal/Insulation Resistance (With ASR Or ETS).
- Test 20: VSS Sensor Status (Vehicle Standing)
- Test 21: Left Front Axle Solenoid Valve (Hold) Internal Resistance
- Test 22: Left Front Axle Solenoid Valve (Release) Internal Resistance
- Test 23: Right Front Axle Solenoid Valve (Hold) Internal Resistance
- Test 24: Right Front Axle Solenoid Valve (Release) Internal Resistance
- Test 25: Abs Hydraulic Unit; Rear Axle Solenoid Valve (Hold) Internal Resistance
- Test 26: Left Rear Axle Solenoid Valve (Hold) Internal Resistance
- Test 27: Abs Hydraulic Unit; Rear Axle Solenoid Valve Release) Internal Resistance
- Test 28: Left Rear Axle Solenoid Valve (Release) Internal Resistance (With ASR Or ETS)
- Test 29: Right Rear Axle Solenoid Valve (Hold) Internal Resistance (With ASR Or ETS)
- Test 30: Right Rear Axle Solenoid Valve (Release) Internal Resistance
- Test 31: Switchover Solenoid Valve Internal Resistance
- Test 32: Inlet Solenoid Valve Internal Resistance (With ASR Or ETS)
- Removal & Installation
- Adjustments
- Torque Specifications
- Wiring Diagrams
Factory Service Tools
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.