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MK3 / A70 markets
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Troubleshooting assistant

Pick a problem area, choose the symptom, then follow the remedy links or step-by-step TSRM procedure.

Diagnostic codes
Searching in 1990 USDM TSRM.
Areas /Hard pedal but brakes inefficient
Brake System

Hard pedal but brakes inefficient

Hard pedal but brakes inefficient

Possible causes and remedies
Possible cause
Oil or grease on shoes or pads
Remedy
Check for cause. Replace shoes or pads
Possible cause
Brake pads distorted, worn or glazed
Remedy
Replace pads
Possible cause
Piston frozen in brake cylinder
Remedy
Repair cylinder
Possible cause
Brake booster faulty
Remedy
Repair booster
Possible cause
Vacuum leaks
Remedy
Repair as necessary
Possible cause
Brake line restricted
Remedy
Repair as necessary