why does my Tesla Model S Plaid/Refresh (2021-present) make a clicking noise when starting

Tesla Model S Plaid/Refresh (2021-present)

Error Codes

1-2 hours

Time

medium

Difficulty

high

Severity

3 min read

521 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 the clicking 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 12V battery before working on electrical components to avoid shock or short circuits.

Symptoms

•Clicking noise heard during vehicle startup
•Possible failure of the vehicle to start
•Dashboard warning lights illuminated
•Unresponsive touchscreen or controls
•No sound from the electric motors

Diagnostic Steps

1
Access the vehicle's diagnostic menu to check for any error messages or alerts regarding the electrical system.
2
Use a multimeter to measure the voltage of the 12V battery; it should read between 12.4V to 12.6V for a fully charged battery.
3
Visually inspect the battery terminals and connections for corrosion or loose connections.
4
Inspect the main fuses related to the starting system for any blown fuses.
5
Turn off the vehicle completely and then restart it to see if the clicking noise persists.
6
Determine if the clicking noise comes from the front trunk area, indicating potential issues with the contactors or relays.

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

•Multimeter
•Socket set
•Torque wrench
•Cleaning brush
•Battery terminal cleaner

Parts Required

•12V battery (if found to be faulty)
•Replacement fuses (if any are blown)
•Contactors or relays (if found to be faulty)

Related Faults

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Diagnostic Steps

1
Access the vehicle's diagnostic menu to check for any error messages or alerts regarding the electrical system.
2
Use a multimeter to measure the voltage of the 12V battery; it should read between 12.4V to 12.6V for a fully charged battery.
3
Visually inspect the battery terminals and connections for corrosion or loose connections.
4
Inspect the main fuses related to the starting system for any blown fuses.
5
Turn off the vehicle completely and then restart it to see if the clicking noise persists.
6
Determine if the clicking noise comes from the front trunk area, indicating potential issues with the contactors or relays.

Solution

1. Preparation

Tools Required: Multimeter, socket set, torque wrench, cleaning brush, battery terminal cleaner.
Disconnect the vehicle from any external power source and ensure it is in "Park" mode.

2. Inspect and Test the 12V Battery

Sub-steps:
- Remove the cover from the 12V battery compartment.
- Use a multimeter to check the voltage. If below 12.4V, the battery may need charging or replacement.
- Clean any corrosion on the battery terminals with a cleaning brush and terminal cleaner.
- Tighten any loose connections.

3. Check and Replace Fuses

Sub-steps:
- Locate the fuse box, typically found in the front trunk area.
- Refer to the owner's manual for the specific fuse related to the starting system.
- Remove the suspected blown fuse and replace it with a fuse of the same amperage.

4. Inspect Contactors and Relays

Sub-steps:
- If the clicking persists, check for access to the contactors or relays near the battery pack.
- Visually inspect for any signs of damage or malfunction.
- Replace any faulty components as needed.