why does my Volkswagen Golf MK7 (2015-2019) make a grinding noise when braking

Solution

1. Preparation

• Gather necessary tools and parts.
• Ensure the vehicle is parked on a flat surface and engage the parking brake.
• Wear safety gloves and glasses.

2. Remove Wheel

• Use a lug wrench to loosen wheel nuts while the car is on the ground.
• Lift the vehicle using a jack and secure it with jack stands.
• Fully remove the wheel to access the brake assembly.

3. Inspect and Replace Brake Pads

• Inspect Brake Pads:

  • Remove the caliper bolts using a socket set.
  • Slide the caliper off the rotor and support it with a bungee cord (do not hang by the brake line).
  • Check the brake pads for thickness; replace if less than 3 mm.

• Replace Brake Pads:

  • Remove the old brake pads from the caliper bracket.
  • Install new brake pads, ensuring they are properly aligned.
  • Apply brake grease on the back of the pads to reduce noise.

4. Inspect and Replace Brake Rotors

• Inspect Brake Rotors:

  • Check for warping or scoring using a straight edge.

• Replace Brake Rotors (if necessary):

  • Remove the rotor by loosening the retaining screws.
  • Install the new rotor, ensuring it sits flush against the hub.
  • Torque the retaining screws to the manufacturer’s specifications (usually around 10-15 Nm).

5. Reassemble and Test

• Reattach the caliper over the new pads.
• Tighten caliper bolts to manufacturer specifications (around 25-30 Nm).
• Reinstall the wheel and torque lug nuts in a star pattern to manufacturer specifications (usually around 110 Nm).
• Lower the vehicle and pump the brake pedal to seat the new pads.