why is my Tesla Model S Plaid/Refresh (2021-present) engine making a strange noise when starting

Tesla Model S Plaid/Refresh (2021-present)

Error Codes

1-2 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

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

Affected Component

Electrical

Estimated Time

1-2 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the battery before working on electrical components to avoid shock.

Symptoms

•Unusual grinding or rattling noise when starting the vehicle
•Occasional warning message displayed on the dashboard
•Vehicle fails to start after the noise occurs
•Noise persists for a few seconds after the vehicle starts
•Reduced acceleration or power loss during initial drive

Diagnostic Steps

1
Use an OBD-II scanner to check for any error codes related to the powertrain or battery management system.
2
Inspect the 12V battery voltage and connections for signs of corrosion or looseness.
3
Listen for the noise while engaging the powertrain in different modes (Drive, Reverse, and Park) to determine if it's consistent across modes.
4
Inspect the electric motor components for any visible damage or debris.
5
Check the vehicle's software version and update it to the latest version if necessary.

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
•Wire brush
•Multimeter
•Torque wrench
•Inspection mirror

Parts Required

•12V battery (if deemed necessary after inspection)
•Battery terminal cleaning kit (if corrosion is severe)

Related Faults

Share this solution

Comments

No comments yet

Be the first to share your thoughts

Back to Generation

Diagnostic Steps

1
Use an OBD-II scanner to check for any error codes related to the powertrain or battery management system.
2
Inspect the 12V battery voltage and connections for signs of corrosion or looseness.
3
Listen for the noise while engaging the powertrain in different modes (Drive, Reverse, and Park) to determine if it's consistent across modes.
4
Inspect the electric motor components for any visible damage or debris.
5
Check the vehicle's software version and update it to the latest version if necessary.

Solution

1. Preparation

Gather necessary tools and parts. Ensure the vehicle is parked on a level surface and secured with wheel chocks.
Disconnect the 12V battery to prevent any electrical shock or short circuits.

2. Inspect and Clean Battery Connections

Tools Required: Socket set, wire brush, multimeter
Remove the negative terminal of the 12V battery using the socket set.
Clean the battery terminals with a wire brush to remove any corrosion.
Reconnect the battery terminal and ensure it is tight.

3. Inspect Drive Unit

Tools Required: Torque wrench, inspection mirror
Remove any covers around the drive unit to gain access to the electric motor.
Visually inspect for any foreign objects, debris, or signs of wear.
Check that all bolts are properly torqued to the manufacturer's specifications.

4. Update Vehicle Software

Tools Required: Tesla mobile app or Wi-Fi connection
Connect the vehicle to a Wi-Fi network.
Access the software update section in the Tesla app or vehicle settings.
Follow on-screen instructions to install any available updates.

5. Reassemble and Test

Reassemble any components or covers removed during the inspection.
Reconnect the 12V battery terminal securely.
Start the vehicle and listen for any unusual noises.