why is my Tesla Outback making a whirring noise while driving

Subaru Outback 4th Generation (2010-2014)

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

3 min read

497 words

Problem Statement

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

Affected Component

Drivetrain

Estimated Time

2-4 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Always disconnect the battery before working on electrical systems.
•Ensure the vehicle is securely lifted and supported before working underneath.

Symptoms

•Whirring noise during acceleration or at constant speed
•Noise increases with vehicle speed
•Possible vibrations felt through the steering wheel or floor
•Intermittent loss of power or responsiveness
•No warning lights illuminated on the dashboard

Diagnostic Steps

1
Inspect the tires for uneven wear or damage that could cause noise.
2
Check the wheel bearings for play or excessive wear.
3
Use an OBD-II scanner to check for any hidden error codes relating to the drivetrain.
4
Examine the drive belt for signs of wear or misalignment.
5
Test the electric motor and inverter for abnormal sounds when stationary.
6
Inspect the differential fluid level and condition for any contamination.

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

•Floor jack and jack stands
•Socket set
•Torque wrench
•Bearing puller
•Bearing press tool
•OBD-II scanner
•Fluid pump

Parts Required

•Wheel bearings (if worn)
•Drive belt (if damaged)
•Differential fluid (if contaminated)

Related Faults

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Diagnostic Steps

1
Inspect the tires for uneven wear or damage that could cause noise.
2
Check the wheel bearings for play or excessive wear.
3
Use an OBD-II scanner to check for any hidden error codes relating to the drivetrain.
4
Examine the drive belt for signs of wear or misalignment.
5
Test the electric motor and inverter for abnormal sounds when stationary.
6
Inspect the differential fluid level and condition for any contamination.

Solution

1. Preparation

Gather necessary tools and parts.
Disconnect the vehicle's battery to prevent any electrical issues during inspection.

2. Inspect and Replace Wheel Bearings

Lift the Vehicle: Use a floor jack to raise the vehicle and secure it with jack stands.
Remove Wheels: Use a socket set to remove lug nuts and take off the wheels.
Check Wheel Bearings: Spin the hub to feel for roughness or noise. If defective, proceed to replace.
Remove Old Bearings: Use a bearing puller to extract the old bearings from the hub.
Install New Bearings: Press new bearings into the hub using a bearing press tool.
Reassemble: Reattach the wheel, torque the lug nuts to manufacturer specifications, and lower the vehicle.

3. Inspect and Replace Drive Belt

Access Drive Belt: Remove any covers obstructing access to the drive belt.
Check for Wear: Inspect the drive belt for cracks, fraying, or glazing.
Remove Old Belt: Release tension from the belt tensioner and slide the old belt off.
Install New Belt: Route the new belt according to the schematic found on the engine bay.
Reapply Tension: Use the belt tensioner to apply the correct tension to the new belt.

4. Fluid Check and Replacement

Check Differential Fluid: Locate the differential housing and remove the fill plug.
Inspect Fluid Condition: Check for proper level and any signs of contamination (metal shavings).
Drain Old Fluid: If necessary, drain the old fluid using a fluid pump or drain pan.
Replace with New Fluid: Fill with the specified differential fluid type until it reaches the fill plug level.

Tools Required

Floor jack and jack stands
Socket set
Torque wrench
Bearing puller
Bearing press tool
OBD-II scanner
Fluid pump

Parts Required

Wheel bearings (if worn)
Drive belt (if damaged)
Differential fluid (if contaminated)

Estimated Repair Time: 2-4 hours

Safety Warnings:

Always disconnect the battery before working on electrical systems.
Ensure the vehicle is securely lifted and supported before working underneath.