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

504 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

•Disconnect the battery before working on electrical systems.
•Ensure the vehicle is securely lifted and supported before working underneath.

Symptoms

•Knocking noise when driving over bumps or uneven surfaces
•Noise occurs during acceleration or deceleration
•Vibration felt in the steering wheel or floorboard
•Possible warning lights on the dashboard
•Reduced ride comfort or handling

Diagnostic Steps

1
Inspect the suspension components for visible damage or wear, including shocks, struts, and control arms.
2
Check for loose or damaged engine mounts that may contribute to the knocking sound.
3
Perform a visual inspection of the undercarriage for any foreign objects or debris that could be causing the noise.
4
Test drive the vehicle over different surfaces to isolate the noise source and identify if it correlates with specific conditions.
5
Use a mechanic's stethoscope to pinpoint the noise origin if necessary to narrow down the suspect components.

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

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

Parts Required

•OEM struts/shocks (if needed)
•Control arms and bushings (if needed)
•Engine mounts (if needed)

Related Faults

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Diagnostic Steps

1
Inspect the suspension components for visible damage or wear, including shocks, struts, and control arms.
2
Check for loose or damaged engine mounts that may contribute to the knocking sound.
3
Perform a visual inspection of the undercarriage for any foreign objects or debris that could be causing the noise.
4
Test drive the vehicle over different surfaces to isolate the noise source and identify if it correlates with specific conditions.
5
Use a mechanic's stethoscope to pinpoint the noise origin if necessary to narrow down the suspect components.

Solution

1. Preparation

Gather tools and safety equipment.
Park the vehicle on a level surface and engage the parking brake.
Disconnect the battery to prevent electrical issues while working on the vehicle.

2. Inspect and Replace Suspension Components

Sub-steps:
- Remove the front and rear wheel covers as necessary.
- Use a jack to lift the vehicle and secure it with jack stands.
- Inspect the struts and shocks for leaks or physical damage.
- Check control arms and bushings for wear and replace if necessary.
- If any components are damaged, replace them with OEM (Original Equipment Manufacturer) parts.

3. Inspect and Replace Engine Mounts

Sub-steps:
- Reconnect the battery and start the vehicle.
- Check engine mounts visually and by hand for any excess movement.
- If mounts are damaged, support the engine with a jack and remove the old mounts.
- Install new engine mounts according to manufacturer specifications, ensuring proper torque values.

4. Final Assembly

Sub-steps:
- Reinstall any removed wheel covers and lower the vehicle.
- Double-check all fasteners and components to ensure they are secured properly.
- Reconnect the battery and clear any fault codes if necessary.