my Tesla Model S Plaid/Refresh (2021-present) has a loud noise when accelerating what's wrong

Tesla Model S Plaid/Refresh (2021-present)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

3 min read

504 words

⚠️ Safety Warning

This issue requires immediate attention. If you are not experienced with automotive repairs, consult a professional mechanic. Working on critical systems can be dangerous.

Problem Statement

Diagnose and fix loud 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

•Disconnect the battery before working on electrical systems.
•Allow the vehicle to cool down before inspecting any components related to the electric motor.

Symptoms

•Loud noise when accelerating
•Possible vibrations felt in the cabin
•Diminished performance or power delivery
•Unusual noises during deceleration
•Check for any warning lights on the dashboard

Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to check for any logged faults related to the drivetrain or suspension.
2
Inspect the tires for uneven wear or damage that might contribute to noise and vibrations.
3
Examine the wheel bearings for play or noise by spinning the wheels and listening for abnormal sounds.
4
Check the suspension components, including struts and bushings, for any signs of wear or failure.
5
Inspect the electric motor and transmission components for any signs of mechanical failure or loose mounting.

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

Parts Required

•Wheel bearings (if replacement is necessary)
•Suspension struts/bushings (if worn)
•Motor mounts (if damaged)

Related Faults

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Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to check for any logged faults related to the drivetrain or suspension.
2
Inspect the tires for uneven wear or damage that might contribute to noise and vibrations.
3
Examine the wheel bearings for play or noise by spinning the wheels and listening for abnormal sounds.
4
Check the suspension components, including struts and bushings, for any signs of wear or failure.
5
Inspect the electric motor and transmission components for any signs of mechanical failure or loose mounting.

Solution

1. Preparation

Gather necessary tools and parts.
Park the vehicle on a flat surface and engage the parking brake.
Disconnect the battery for safety.

2. Inspect and Replace Wheel Bearings

Sub-steps:
1. Raise the vehicle using a jack and secure it with jack stands.
2. Remove the wheel by loosening the lug nuts with a socket wrench.
3. Inspect the wheel bearing by rotating the hub; listen for grinding noises.
4. If necessary, remove the hub assembly and replace the wheel bearing.
5. Reassemble the hub and wheel, tightening the lug nuts to the manufacturer’s specifications (usually around 80-100 ft-lbs).

3. Check Suspension Components

Sub-steps:
1. Visually inspect the struts for leaks or damage.
2. Shake the suspension components to check for play or unusual noises.
3. Replace any worn strut or bushing with new OEM parts.
4. Reassemble and torque bolts to manufacturer specifications.

4. Inspect Transmission and Motor Mounts

Sub-steps:
1. Remove any cover panels necessary to access the electric motor and transmission.
2. Check the motor mounts for signs of wear or cracking.
3. If damaged, replace the motor mounts with OEM parts.
4. Ensure that all fasteners are properly torqued to manufacturer specifications.