how to fix my Tesla Model S Plaid/Refresh (2021-present) that won’t start and just clicks?

Tesla Model S Plaid/Refresh (2021-present)

Error Codes

1-3 hours

Time

medium

Difficulty

high

Severity

3 min read

520 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 starting issues in Tesla Model S Plaid. Step-by-step guide with diagnostic procedures and repair instructions.

Affected Component

Electrical

Estimated Time

1-3 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the battery before working on electrical systems.
•Ensure proper handling of high-voltage components if accessing the main battery pack.

Symptoms

•Clicking noise when attempting to start the vehicle
•Dashboard lights flicker or dim
•No engine cranking or turnover
•Battery low warning message displayed
•Inability to power accessories or lights

Diagnostic Steps

1
Check the vehicle's battery voltage using a multimeter to determine if it is below the minimum required for starting.
2
Inspect the battery connections for corrosion or looseness.
3
Verify the condition of the 12V battery, as it may be weak or discharged.
4
Examine the main battery pack for any error messages or alerts via the Tesla app or onboard diagnostics.
5
Test the contactor and relay functionality to ensure they are operating correctly.
6
Check for any software updates that may need to be installed to resolve potential software-related issues.

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
•Battery charger

Parts Required

•12V battery (if replacement is necessary)
•Contactors or relays (if faulty)

Related Faults

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Diagnostic Steps

1
Check the vehicle's battery voltage using a multimeter to determine if it is below the minimum required for starting.
2
Inspect the battery connections for corrosion or looseness.
3
Verify the condition of the 12V battery, as it may be weak or discharged.
4
Examine the main battery pack for any error messages or alerts via the Tesla app or onboard diagnostics.
5
Test the contactor and relay functionality to ensure they are operating correctly.
6
Check for any software updates that may need to be installed to resolve potential software-related issues.

Solution

1. Preparation

Gather necessary tools: multimeter, socket set, and a battery charger.
Ensure the vehicle is in a safe location, with adequate space to work.
Disconnect the vehicle from any charging source.

2. Inspect and Charge 12V Battery

Sub-step 1: Locate the 12V battery, typically found in the front trunk (frunk).
Sub-step 2: Use the multimeter to measure the voltage of the 12V battery. A healthy battery should read around 12.6V or higher.
Sub-step 3: If the voltage is low (below 12V), connect a battery charger and charge the battery fully.
Sub-step 4: Once charged, reconnect the battery terminals securely, ensuring no corrosion is present.

3. Check Main Battery Pack

Sub-step 1: Use the Tesla app or onboard diagnostics to check the status of the main battery pack.
Sub-step 2: If there are error messages, follow the prompts to reset the system or perform a soft reboot by holding down the two scroll wheels on the steering wheel until the screen resets.

4. Inspect Contactors and Relays

Sub-step 1: If the vehicle still does not start, access the contactors and relays, which may require removing panels.
Sub-step 2: Visually inspect for any burnt components or loose connections.
Sub-step 3: Use a multimeter to test the continuity of the contactor and relays, replacing any faulty parts as necessary.