why does my Tesla Model S Plaid/Refresh (2021-present) have a loud humming noise at high speeds?

Tesla Model S Plaid/Refresh (2021-present)

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

3 min read

535 words

Problem Statement

Learn how to diagnose and fix loud humming noise at high speeds 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

•Ensure the vehicle is on a flat surface and securely supported with jack stands before working underneath.
•Always wear safety glasses and gloves when handling tools and components.

Symptoms

•Loud humming noise at speeds above 50 mph
•Increased road noise inside the cabin
•Possible vibration felt through the steering wheel or floor
•Changes in sound frequency with vehicle speed
•No warning lights illuminated on the dashboard

Diagnostic Steps

1
Inspect the tires for uneven wear or damage.
2
Check tire pressure to ensure it matches manufacturer specifications.
3
Examine the wheel bearings for play or noise when rotated by hand.
4
Test drive the vehicle at various speeds while listening for changes in the sound.
5
Inspect drivetrain components, including the motor mounts and differential.
6
Check for aerodynamic components, such as underbody shields or trim pieces, that may be loose.

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

•Tread depth gauge
•Flashlight
•Tire pressure gauge
•Air compressor or tire inflator
•Floor jack
•Jack stands
•Wrench set
•Fluid pump
•Socket set
•Screwdriver set

Parts Required

•Replacement tires (if worn)
•Wheel bearings (if damaged)
•Differential fluid (if low or contaminated)

Related Faults

Share this solution

Comments

No comments yet

Be the first to share your thoughts

Back to Generation

Diagnostic Steps

1
Inspect the tires for uneven wear or damage.
2
Check tire pressure to ensure it matches manufacturer specifications.
3
Examine the wheel bearings for play or noise when rotated by hand.
4
Test drive the vehicle at various speeds while listening for changes in the sound.
5
Inspect drivetrain components, including the motor mounts and differential.
6
Check for aerodynamic components, such as underbody shields or trim pieces, that may be loose.

Solution

1. Tire Inspection

Sub-steps:
1. Visually inspect all tires for uneven tread wear or visible damage.
2. Use a tread depth gauge to measure tread depth across all tires.
Tools Required: Tread depth gauge, flashlight

2. Tire Pressure Adjustment

Sub-steps:
1. Use a tire pressure gauge to check the pressure of all tires.
2. Inflate or deflate the tires to reach the specified pressure found in the owner’s manual or on the door jamb sticker.
Tools Required: Tire pressure gauge, air compressor or tire inflator

3. Wheel Bearing Inspection

Sub-steps:
1. Lift the vehicle using a jack and secure it with jack stands.
2. Spin each wheel by hand and listen for any grinding or roughness that may indicate a failing wheel bearing.
Tools Required: Floor jack, jack stands

4. Drivetrain Inspection

Sub-steps:
1. Inspect motor mounts for signs of wear or cracking.
2. Check the differential fluid level and condition; replace if necessary.
Tools Required: Wrench set, fluid pump

5. Aerodynamic Component Check

Sub-steps:
1. Inspect underbody shields and trim pieces for looseness or damage.
2. Tighten any loose fasteners or replace damaged components.
Tools Required: Socket set, screwdriver set