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

Tesla Model S Plaid/Refresh (2021-present)

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

3 min read

502 words

Problem Statement

Learn to diagnose and fix thumping noise in Tesla Model S Plaid suspension. Step-by-step guide with symptoms, diagnostic steps, and repair instructions.

Affected Component

Suspension

Estimated Time

2-4 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Always engage the parking brake and use wheel chocks when working on a vehicle.
•Ensure the vehicle is on a level surface to prevent it from rolling.

Symptoms

•Thumping noise when driving over bumps or uneven surfaces
•Possible rattling sounds when going over potholes
•Diminished ride quality or comfort
•Vibration felt through the cabin
•Unusual tire wear patterns (if checked)

Diagnostic Steps

1
Inspect the suspension components visually for any signs of damage or wear, focusing on control arms, bushings, and struts.
2
Check the tightness of all suspension-related bolts using a torque wrench, ensuring they meet manufacturer specifications.
3
Perform a bounce test on each corner of the vehicle to assess the shock absorbers' performance.
4
Inspect the tires for proper inflation and even tread wear, as uneven tires can contribute to abnormal noises.
5
Use a chassis ear or similar listening device to pinpoint the source of the noise while driving over bumps.

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

•Lug wrench
•Torque wrench
•Tire pressure gauge
•Chassis ear (optional)

Parts Required

•Replacement control arms (if damaged)
•Replacement bushings (if worn)
•Replacement struts/shocks (if leaking or worn)

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Diagnostic Steps

1
Inspect the suspension components visually for any signs of damage or wear, focusing on control arms, bushings, and struts.
2
Check the tightness of all suspension-related bolts using a torque wrench, ensuring they meet manufacturer specifications.
3
Perform a bounce test on each corner of the vehicle to assess the shock absorbers' performance.
4
Inspect the tires for proper inflation and even tread wear, as uneven tires can contribute to abnormal noises.
5
Use a chassis ear or similar listening device to pinpoint the source of the noise while driving over bumps.

Solution

1. Preparation

Gather necessary tools and parts.
Park the vehicle on a level surface and engage the parking brake.
Place wheel chocks behind the rear wheels for additional safety.

2. Inspect and Replace Suspension Components

Sub-step 1: Remove the wheel on the affected side using a lug wrench.
Sub-step 2: Inspect the control arms and bushings for cracks, tears, or excessive play.
Sub-step 3: If any components are damaged, replace them with OEM parts.
Sub-step 4: For struts or shocks, inspect for oil leaks and perform a bounce test to confirm they are functioning properly. Replace if necessary.

3. Tighten Suspension Bolts

Sub-step 1: Use a torque wrench to ensure all suspension bolts are tightened to the manufacturer's specifications.
Sub-step 2: Refer to the service manual for specific torque values for each component.

4. Check and Adjust Tire Pressure

Sub-step 1: Use a tire pressure gauge to verify that all tires are inflated to the recommended PSI as indicated on the driver’s door jamb.
Sub-step 2: Adjust tire pressures as necessary.