Diagnosing and repairing BMW E46 330d (M57D30) ABS module faults

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Diagnosing and repairing BMW E46 330d (M57D30) ABS module faults

Common symptoms:

• ABS warning light on
• Traction control malfunction
• Brake pedal pulsation

Diagnostic steps:

• Scan for ABS-related fault codes
• Check ABS sensor rings for damage
• Inspect ABS wiring for corrosion or damage
• Test ABS pump and module functionality

Potential repairs:

• Replace faulty ABS sensors
• Repair or replace damaged wiring
• Rebuild ABS pump (if mechanical issue)
• Replace ABS module (if electronic failure)

Note: Some ABS modules can be repaired by specialized services, which may be more cost-effective than replacement.