my Tesla Model S Plaid/Refresh (2021-present) won't start and makes a clicking sound

Tesla Model S Plaid/Refresh (2021-present)

Error Codes

1-2 hours

Time

medium

Difficulty

high

Severity

3 min read

517 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 a no-start condition in Tesla Model S Plaid. Step-by-step guide with symptoms, diagnostic steps, 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 systems to prevent shocks.
•Allow the vehicle to sit for a few minutes after disconnecting the battery before servicing.

Symptoms

•Clicking sound when the start button is pressed
•Dashboard lights flickering or dim
•No power to the vehicle systems
•Unable to engage the drive or reverse gear
•Error messages displayed on the touchscreen

Diagnostic Steps

1
Check the vehicle's battery voltage using a multimeter to ensure it has sufficient charge.
2
Inspect the 12V battery connections for corrosion or looseness.
3
Scan the vehicle's onboard diagnostics using Tesla's service software for any error codes.
4
Verify the status of the main battery pack and any related fuses.
5
Ensure that the vehicle is not in 'Tow Mode' which could prevent starting.

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
•Wire brush
•Battery charger

Parts Required

•Replacement fuses
•12V battery

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Diagnostic Steps

1
Check the vehicle's battery voltage using a multimeter to ensure it has sufficient charge.
2
Inspect the 12V battery connections for corrosion or looseness.
3
Scan the vehicle's onboard diagnostics using Tesla's service software for any error codes.
4
Verify the status of the main battery pack and any related fuses.
5
Ensure that the vehicle is not in 'Tow Mode' which could prevent starting.

Solution

1. Preparation

Gather necessary tools and parts.
Ensure the vehicle is parked safely and on a level surface.
Disconnect the 12V battery for safety.

2. Inspect the 12V Battery

Locate the 12V battery under the frunk (front trunk).
Remove the 12V battery cover using a socket set.
Check the battery terminals for corrosion and clean them with a wire brush if necessary.
Ensure the connections are tight; re-tighten if needed.

3. Test and Charge the 12V Battery

Use a multimeter to measure the voltage of the 12V battery. It should be around 12.6V when fully charged.
If the voltage is low, connect a battery charger to the 12V battery and charge it fully.
Once charged, reconnect the battery and ensure all connections are secure.

4. Check the Main Battery Pack

If the vehicle still does not start, use the Tesla service software to check the status of the main battery pack.
Inspect for any blown fuses associated with the battery management system.
Replace any blown fuses with the appropriate rating.

5. Reconnect and Test

Reconnect the 12V battery and ensure all components are properly placed back.
Attempt to start the vehicle again by pressing the start button.