my Tesla Model S Plaid/Refresh (2021-present) has a persistent knocking noise

Tesla Model S Plaid/Refresh (2021-present)

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

3 min read

474 words

Problem Statement

Learn how to diagnose and fix persistent knocking noise in Tesla Model S Plaid. Step-by-step guide with diagnostic procedures and repair instructions.

Affected Component

Suspension

Estimated Time

2-4 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Always use jack stands when working under a vehicle.
•Ensure the vehicle is stable before beginning any work.

Symptoms

•Knocking noise when driving, particularly over bumps
•Noise may increase with acceleration
•Possible vibration felt through the steering wheel
•Unusual tire wear patterns
•Check for any warning lights on the dashboard

Diagnostic Steps

1
Inspect the suspension components visually for damage or wear.
2
Check the tightness of suspension bolts and bushings using a torque wrench.
3
Test drive the vehicle to isolate the source of the noise (front vs. rear).
4
Lift the vehicle and perform a thorough inspection of the drivetrain components.
5
Examine the tires for any signs of uneven wear or damage.
6
Use a stethoscope or mechanic's listening device to pinpoint the area of the noise.

Solution

💡 Expert Tip

For complex repairs like this, consider taking photos at each step. This helps if you need to reverse a step or consult with a mechanic. Also, keep all removed parts organized - you may need to reference them during reassembly.

Verification

After completing the repair, verify that the issue has been resolved:

✓Test the affected component to ensure it functions correctly
✓Check for any error codes or warning lights
✓Monitor the vehicle for a few days to ensure the issue does not recur

Prevention Tips

To prevent this issue from occurring again:

•Follow the manufacturer's recommended maintenance schedule
•Address warning signs early before they develop into major issues
•Use quality parts and fluids recommended for your vehicle
•Keep detailed records of all repairs and maintenance

Tools & Equipment Required

•Hydraulic jack
•Jack stands
•Torque wrench
•Socket set
•Mechanic's stethoscope

Parts Required

•Suspension components (if worn/damaged, e.g., bushings, control arms)
•Replacement hardware (if necessary)

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Diagnostic Steps

1
Inspect the suspension components visually for damage or wear.
2
Check the tightness of suspension bolts and bushings using a torque wrench.
3
Test drive the vehicle to isolate the source of the noise (front vs. rear).
4
Lift the vehicle and perform a thorough inspection of the drivetrain components.
5
Examine the tires for any signs of uneven wear or damage.
6
Use a stethoscope or mechanic's listening device to pinpoint the area of the noise.

Solution

1. Preparation

Gather necessary tools and parts.
Ensure the vehicle is parked on a level surface and the parking brake is engaged.

2. Raise the Vehicle

Use a hydraulic jack to lift the vehicle and secure it on jack stands.
Make sure to follow safety protocols and ensure stability.

3. Inspect Suspension Components

Check all suspension components including control arms, struts, shocks, and bushings.
- Sub-steps:
  - Look for any cracks, breaks, or signs of excessive wear.
  - Manually wiggle each component to check for play or looseness.
Tighten any loose bolts to manufacturer specifications.

4. Replace Worn Components

If any suspension or drivetrain components are identified as worn or damaged, proceed with replacement.
- Sub-steps:
  - Remove the damaged part (e.g., control arm, strut, or bushing).
  - Install the new part, ensuring all bolts are torqued to specifications.
  - Use anti-seize compound on threads if necessary.

5. Reassemble and Lower Vehicle

Reinstall any components that were removed during inspection.
Carefully lower the vehicle back to the ground.

6. Test Drive

Perform a test drive to ensure that the knocking noise has been resolved.