my Tesla Model S Plaid/Refresh (2021-present) won't start just clicks what should I check

Tesla Model S Plaid/Refresh (2021-present)

Error Codes

1-2 hours

Time

medium

Difficulty

high

Severity

3 min read

447 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 no-start issue 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 battery before working on electrical connections.
•Ensure the vehicle is in 'Park' mode while performing diagnostics or repairs.

Symptoms

•Clicking noise when the start button is pressed
•No engine turnover or cranking
•Dashboard lights illuminate, but no further response
•Possible 'Battery Low' warning message displayed
•Electrical components (lights, radio) may function intermittently

Diagnostic Steps

1
Check the 12V battery voltage using a multimeter; it should be above 12.4 volts.
2
Inspect the connections at the 12V battery for corrosion or loose terminals.
3
Confirm that the main battery pack has sufficient charge via the Tesla app or dashboard.
4
Use the Tesla service mode to run a diagnostic check for any error codes.
5
Test the 12V battery with a load test if the voltage is low or suspect.

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 load tester

Parts Required

•New 12V battery

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Diagnostic Steps

1
Check the 12V battery voltage using a multimeter; it should be above 12.4 volts.
2
Inspect the connections at the 12V battery for corrosion or loose terminals.
3
Confirm that the main battery pack has sufficient charge via the Tesla app or dashboard.
4
Use the Tesla service mode to run a diagnostic check for any error codes.
5
Test the 12V battery with a load test if the voltage is low or suspect.

Solution

1. Preparation

Gather tools: multimeter, socket set, and a battery load tester.
Ensure the vehicle is in a safe and accessible location.
Park the vehicle with enough space around it for maintenance.

2. Inspect the 12V Battery

Step 1: Open the front trunk and locate the 12V battery.
Step 2: Disconnect the negative terminal first, followed by the positive terminal.
Step 3: Clean any corrosion from the terminals and cable ends using a wire brush and a mixture of baking soda and water.
Step 4: Reconnect the positive terminal first, then the negative terminal, ensuring they are tight.

3. Replace the 12V Battery (if necessary)

Step 1: If the battery is confirmed dead or weak, remove the old battery by unbolting it from its mounting bracket.
Step 2: Install the new 12V battery, ensuring proper orientation.
Step 3: Reconnect the terminals (positive first, then negative).
Step 4: Dispose of the old battery properly according to local regulations.