why does my Tesla Model S Plaid/Refresh (2021-present) make a whirring noise when in motion

Tesla Model S Plaid/Refresh (2021-present)

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

3 min read

523 words

Problem Statement

Learn how to diagnose and fix whirring noise in Tesla Model S Plaid. Step-by-step guide with diagnostic procedures and repair instructions.

Affected Component

Transmission

Estimated Time

2-4 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Always ensure the vehicle is securely lifted and supported before working underneath.
•Disconnect the battery before performing any work on high-voltage components.

Symptoms

•Whirring noise that increases with vehicle speed
•Noise persists when accelerating or decelerating
•No unusual vibrations felt in the cabin
•Absence of warning lights on the dashboard
•Noise may vary with changes in load (e.g., turning, acceleration)

Diagnostic Steps

1
Inspect for loose components by visually checking all undercarriage components, including the battery and motor mounts, for any loose parts.
2
Check wheel bearings by lifting the vehicle and manually spinning each wheel to listen for grinding or roughness, indicating potential bearing wear.
3
Listen for noise isolation by driving the vehicle in a quiet area to determine if the noise changes with speed, load, or direction.
4
Scan for error codes using a Tesla-compatible OBD-II scanner to check for any stored diagnostic trouble codes (DTCs) related to the drivetrain.
5
Inspect differential and gearbox by examining the differential fluid level and condition, and checking for any signs of leaks or damage.

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

•Jack and jack stands
•Socket set
•Torque wrench
•OBD-II scanner

Parts Required

•Wheel bearings (if replacement is needed)
•Differential fluid (if a fluid change is necessary)

Related Faults

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Diagnostic Steps

1
Inspect for loose components by visually checking all undercarriage components, including the battery and motor mounts, for any loose parts.
2
Check wheel bearings by lifting the vehicle and manually spinning each wheel to listen for grinding or roughness, indicating potential bearing wear.
3
Listen for noise isolation by driving the vehicle in a quiet area to determine if the noise changes with speed, load, or direction.
4
Scan for error codes using a Tesla-compatible OBD-II scanner to check for any stored diagnostic trouble codes (DTCs) related to the drivetrain.
5
Inspect differential and gearbox by examining the differential fluid level and condition, and checking for any signs of leaks or damage.

Solution

1. Preparation

Tools Required: Jack and jack stands, socket set, torque wrench, OBD-II scanner.
Ensure the vehicle is parked on a flat surface and the parking brake is engaged.
Disconnect the high-voltage battery if necessary.

2. Inspect and Secure Loose Components

Sub-steps:
1. Raise the vehicle with a jack and secure it on jack stands.
2. Visually inspect all fasteners and components under the vehicle for tightness.
3. Tighten any loose bolts or components as required, ensuring they meet manufacturer's torque specifications.

3. Replace Wheel Bearings (if necessary)

Sub-steps:
1. Remove the wheel and tire assembly from the suspected wheel.
2. Detach the brake caliper and rotor.
3. Remove the hub assembly to access the wheel bearings.
4. Replace the bearing(s) with new units, ensuring proper alignment and lubrication.
5. Reassemble the hub, rotor, and caliper, and torque all fasteners to specifications.

4. Differential Fluid Change (if necessary)

Sub-steps:
1. Locate the differential fill and drain plugs.
2. Drain the old fluid and inspect for metal shavings or debris.
3. Replace with manufacturer-recommended differential fluid, filling to the proper level.
4. Reinstall the drain and fill plugs, torquing to specifications.