why does my Tesla Model 3 Highland (2024-present) have a low grinding noise when driving

Solution

1. Preparation

• Gather tools: jack, jack stands, wrench set, torque wrench, and brake cleaner.
• Ensure the vehicle is parked on a level surface and the parking brake is engaged.

2. Brake Inspection

1. Remove Wheel

   • Loosen lug nuts and raise the vehicle using a jack.
   • Secure with jack stands and remove the wheel.

2. Inspect Brake Pads and Rotors

   • Check the thickness of the brake pads; replace if worn below the manufacturer’s specified thickness.
   • Inspect rotors for scoring or warping; machine or replace if necessary.

3. Clean Components

   • Use brake cleaner to clean the brake pads and rotors. Wipe down calipers and surrounding areas.

3. Drivetrain Inspection

1. Inspect Drive Shafts

   • Check for any visible damage or wear on the drive shafts and CV joints.
   • Ensure bolts are tightened to the manufacturer's torque specifications.

2. Check Wheel Bearings

   • Spin the wheel while it is off the ground; listen for grinding noises and check for excessive play.
   • Replace wheel bearings if they are found to be worn or damaged.

4. Reassembly

1. Reinstall Wheel
   • Place the wheel back on and hand-tighten the lug nuts.
   • Lower the vehicle and torque the lug nuts to the manufacturer's specifications.

5. Test Drive

• Conduct a short test drive to confirm that the grinding noise has been resolved.