why does my Tesla Model S Plaid/Refresh (2021-present) make a knocking noise

Tesla Model S Plaid/Refresh (2021-present)

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

3 min read

483 words

Problem Statement

Learn how to diagnose and fix 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 disconnect the battery before working on electrical systems.
•Allow the vehicle to cool down before inspecting any hot components.

Symptoms

•Knocking noise when driving, especially over bumps or uneven surfaces
•Noise increases with speed or acceleration
•Possible vibration felt in the steering wheel or chassis
•Unusual tire wear observed
•Warning message or alert on the dashboard (if applicable)

Diagnostic Steps

1
Inspect wheel wells for any debris or foreign objects that may be causing noise.
2
Perform a visual inspection of the suspension components, including control arms and bushings.
3
Check for loose or damaged components in the drivetrain.
4
Examine the tires for signs of uneven wear or damage.
5
Raise the vehicle and check for play in the wheel bearings and suspension joints.
6
Scan the vehicle with an OBD-II scanner for any fault codes related to the drivetrain or suspension.

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

•OBD-II scanner
•Hydraulic lift or jack stands
•Socket set
•Torque wrench
•Tire pressure gauge
•Tire balancer

Parts Required

•Replacement suspension components (if damaged)
•New tires (if uneven wear is excessive)

Related Faults

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Diagnostic Steps

1
Inspect wheel wells for any debris or foreign objects that may be causing noise.
2
Perform a visual inspection of the suspension components, including control arms and bushings.
3
Check for loose or damaged components in the drivetrain.
4
Examine the tires for signs of uneven wear or damage.
5
Raise the vehicle and check for play in the wheel bearings and suspension joints.
6
Scan the vehicle with an OBD-II scanner for any fault codes related to the drivetrain or suspension.

Solution

1. Preparation

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

2. Raise Vehicle

Use a hydraulic lift or jack stands to safely lift the vehicle.
Ensure the car is secure before proceeding.

3. Inspect Suspension Components

Tools Required: Socket set, torque wrench, pry bar.
Check all suspension components (control arms, struts, bushings) for wear or damage.
Use a pry bar to check for play in the bushings; replace if any excess movement is detected.

4. Tighten or Replace Loose Components

Tools Required: Torque wrench.
Tighten any loose bolts or fasteners found during inspection to the manufacturer’s specified torque values.
If any components are found to be damaged, replace them with OEM parts.

5. Inspect and Balance Tires

Tools Required: Tire pressure gauge, tire balancer.
Check tire pressures and adjust as necessary.
Inspect tires for uneven wear and replace if necessary.
Balance the tires if any vibrations are felt while driving.