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

Tesla Model S Plaid/Refresh (2021-present)

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

3 min read

484 words

Problem Statement

Learn how to diagnose and fix knocking noise during acceleration 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 before performing inspections on hot components.

Symptoms

•Knocking noise during acceleration
•Vibration felt through the chassis
•Unusual sounds during deceleration
•Potential loss of power or sluggish acceleration
•Abnormal tire wear (if applicable)

Diagnostic Steps

1
Inspect the undercarriage for loose components or debris.
2
Check for any visible damage to the suspension system (e.g., bushings, control arms).
3
Test drive the vehicle to replicate the noise and note conditions (speed, road surface).
4
Scan the vehicle's system for any error codes using an OBD-II scanner.
5
Inspect the driveshaft and CV joints for wear or damage.
6
Check the wheel bearings for play or excessive wear.

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
•Socket set
•Torque wrench
•Jack and jack stands
•Pry bar

Parts Required

•Suspension bushings (if damaged)
•Driveshaft or CV joints (if worn)
•Wheel bearings (if faulty)

Related Faults

Share this solution

Comments

No comments yet

Be the first to share your thoughts

Back to Generation

Diagnostic Steps

1
Inspect the undercarriage for loose components or debris.
2
Check for any visible damage to the suspension system (e.g., bushings, control arms).
3
Test drive the vehicle to replicate the noise and note conditions (speed, road surface).
4
Scan the vehicle's system for any error codes using an OBD-II scanner.
5
Inspect the driveshaft and CV joints for wear or damage.
6
Check the wheel bearings for play or excessive wear.

Solution

1. Preparation

Gather all tools and parts required for inspection and repair.
Ensure the vehicle is parked on a level surface and the parking brake is engaged.

2. Inspect and Secure Components

Tools Required: Socket set, torque wrench, pry bar
Inspect all suspension components, including control arms, bushings, and sway bar links for damage or looseness.
Tighten any loose bolts to the manufacturer's torque specifications.
Replace any damaged bushings or components.

3. Driveshaft and CV Joint Inspection

Tools Required: Jack and jack stands, wheel chocks
Raise the vehicle and secure it with jack stands.
Inspect the driveshaft for any signs of damage or excessive play at the CV joints.
If necessary, replace the driveshaft or CV joints following the manufacturer's specifications.

4. Wheel Bearing Check

Tools Required: Torque wrench, socket set
Rotate each wheel by hand to check for resistance or grinding noises.
If any wheel bearings are found to be faulty, they should be replaced promptly.

5. Reassemble and Lower Vehicle

After all repairs and inspections are completed, reassemble any components removed during the process.
Lower the vehicle and ensure all tools are removed from the work area.