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

Solution

1. Preparation

• Gather tools and parts.
• Ensure the vehicle is parked on a level surface and secure it with wheel chocks.
• Disconnect the battery before starting work to ensure safety.

2. Remove Wheel

• Tools Required: Socket set, torque wrench
• Loosen lug nuts slightly while the vehicle is on the ground.
• Lift the vehicle using a jack and secure it with jack stands.
• Fully remove the lug nuts and take off the wheel.

3. Inspect and Replace Brake Pads

• Tools Required: Piston retracting tool, brake cleaner
• Remove the caliper bolts using the socket set.
• Carefully lift the caliper off the rotor; do not disconnect brake lines.
• Inspect the brake pads for thickness and replace if worn below the manufacturer’s specification (typically 3mm).
• Clean the caliper and rotor with brake cleaner before installation.
• If necessary, use a piston retracting tool to push the caliper piston back into the caliper.

4. Check and Replace Brake Rotors (if necessary)

• Tools Required: Torque wrench, brake rotor removal tool
• If the rotors are damaged, remove them by unscrewing the retaining screws (if applicable) or using a rotor removal tool.
• Install new rotors, ensuring they are properly seated.
• Torque the rotor screws to the manufacturer's specifications.

5. Reassemble and Test

• Reinstall the caliper over the new brake pads and torque the caliper bolts to the specified torque.
• Reattach the wheel and torque the lug nuts in a star pattern to the manufacturer’s specifications.
• Reconnect the battery and lower the vehicle.