why does my Volvo XC90 make grinding noises when I brake?

Solution

1. Preparation

• Tools Required: Jack, jack stands, lug wrench, socket set, torque wrench, brake cleaner.
• Ensure the vehicle is parked on a level surface and the parking brake is engaged.
• Disconnect the battery to ensure safety while working on the braking system.

2. Remove Wheel

• Loosen the lug nuts slightly while the vehicle is on the ground.
• Use the jack to lift the vehicle and secure it with jack stands.
• Remove the lug nuts completely and take off the wheel to access the brake assembly.

3. Inspect and Replace Brake Pads

• Remove the caliper bolts using the socket set.
• Carefully slide the caliper off the rotor; do not detach the brake line.
• Inspect the brake pads for wear. If they are below the minimum thickness, they need replacement.
• Use brake cleaner to clean the caliper and rotor surface.
• If replacing, install new brake pads, ensuring they are seated properly.

4. Inspect and Replace Brake Rotors (if necessary)

• Check the rotor surface for grooves or significant wear.
• If the rotors are damaged, remove them by unscrewing the retaining screws (if equipped) and sliding them off the hub.
• Install new rotors by sliding them onto the hub and securing them as per manufacturer specifications.
• Torque the rotor screws to the specified torque value (usually around 10-15 ft-lbs, depending on model).

5. Reassemble and Test

• Reattach the caliper over the new pads and torque the caliper bolts to the manufacturer’s specifications.
• Reinstall the wheel and torque the lug nuts in a crisscross pattern to ensure even pressure.
• Lower the vehicle back to the ground and reconnect the battery.