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

Tesla Model S Plaid/Refresh (2021-present)

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

3 min read

505 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 use jack stands when working under the vehicle.
•Disconnect the battery before servicing electrical components.

Symptoms

•Knocking noise audible while driving
•Vibration felt through the steering wheel or chassis
•Noise increases with speed or when turning
•Potential loss of handling stability
•Unusual tire wear may be evident

Diagnostic Steps

1
Inspect the tires for uneven wear or damage.
2
Check wheel lug nut torque to ensure they are properly tightened.
3
Examine suspension components for signs of wear or damage (e.g., bushings, control arms).
4
Perform a visual inspection of the drivetrain components (e.g., axles, CV joints).
5
Raise the vehicle and perform a shake test on the wheels to identify play in the suspension or drivetrain.
6
Scan the vehicle’s onboard diagnostics for any error codes related to the suspension or drivetrain.

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
•Pry bar
•Inspection mirror

Parts Required

•Tires (if damaged)
•Suspension components (bushings, control arms, struts as needed)
•CV joints or axles (if damaged)

Related Faults

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Diagnostic Steps

1
Inspect the tires for uneven wear or damage.
2
Check wheel lug nut torque to ensure they are properly tightened.
3
Examine suspension components for signs of wear or damage (e.g., bushings, control arms).
4
Perform a visual inspection of the drivetrain components (e.g., axles, CV joints).
5
Raise the vehicle and perform a shake test on the wheels to identify play in the suspension or drivetrain.
6
Scan the vehicle’s onboard diagnostics for any error codes related to the suspension or drivetrain.

Solution

1. Preparation

Gather necessary tools and parts.
Ensure the vehicle is parked on a flat surface and the parking brake is engaged.
Disconnect the 12V battery to ensure safety while working on electrical components.

2. Tire Inspection and Replacement

Sub-steps:
1. Remove each wheel using a socket set.
2. Inspect tires for bulges, cuts, or uneven wear; replace if necessary.
3. Check tire pressure and adjust to manufacturer specifications.
4. Reinstall wheels and torque lug nuts to manufacturer specifications (usually around 100 ft-lbs).

3. Suspension Component Inspection

Sub-steps:
1. Remove the underbody panels if necessary to access suspension components.
2. Inspect control arms, bushings, and struts for any signs of wear or damage.
3. Replace any worn or damaged components with OEM parts.
4. Reassemble any panels removed during inspection.

4. Drivetrain Inspection

Sub-steps:
1. Inspect the CV joints and axles for any signs of damage or play.
2. If any components are damaged, replace them with new OEM parts.
3. Ensure all bolts and fasteners are torqued to the manufacturer’s specifications.

5. Final Assembly and Testing

Sub-steps:
1. Reconnect the 12V battery.
2. Take the vehicle for a test drive to confirm that the knocking noise has been resolved.
3. Monitor for any new noises or handling issues.