TORQDEX // BRAKE DIAGNOSTIC
Grinding Brake Noise
Diagnose grinding brake noises by inspecting brake pads, rotors, calipers, shields, wheel bearings, and damaged brake hardware.
01 // WHAT IT MEANS
Understanding the symptom
Grinding noises usually indicate metal-to-metal contact or severe brake component wear.
Continued operation can damage rotors, calipers, and other brake components.
02 // QUICK CHECKS
Check these first
Start with simple observations and scan data before moving into deeper testing.
Determine when noise occurs
Identify whether grinding occurs during braking, driving, turning, or all conditions.
Inspect brake pad thickness
Severely worn pads are a common cause of grinding.
Inspect rotor condition
Look for deep scoring or metal contact.
Check for debris
Inspect shields, hardware, and surrounding components.
03 // SYSTEMS TO CHECK
Common systems involved
Brake pad material
Worn pads can expose backing plates and create grinding.
Rotor damage
Metal contact can rapidly damage rotor surfaces.
Caliper operation
A sticking caliper can create excessive wear and noise.
Brake hardware condition
Loose shields or hardware can create contact noises.
04 // DIAGNOSTIC ORDER
Diagnose it in this order
Inspect brake components
Remove the wheel and inspect pads, rotors, and hardware.
Measure pad condition
Confirm remaining friction material.
Inspect rotor damage
Check for grooves, heat damage, and metal contact.
Check caliper movement
Verify the caliper releases correctly.
Repair and verify
Confirm noise is eliminated after repair.
05 // TEST RESULTS
What the results may indicate
Replace worn components
Metal contact requires inspection of pads, rotors, and related hardware.
Repair brake assembly
Damaged rotors may require replacement.
Inspect nearby components
Shields, bearings, and hardware can create similar noises.
06 // COMMON MISTAKE
Don't ignore grinding brake noise
Grinding can quickly turn a brake service into a larger repair if ignored.
07 // RELATED OBD-II CODES
Related trouble codes
08 // RELATED TORQDEX TOOLS