how to repair my Tesla Model S Original (2012-2020) that won't start just clicks

Tesla Model S Plaid/Refresh (2021-present)

Error Codes

1-2 hours

Time

medium

Difficulty

high

Severity

3 min read

576 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 (2012-2020) with clicking sound. Step-by-step guide to repair electrical problems.

Affected Component

Electrical

Estimated Time

1-2 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the main battery before working on electrical systems
•Ensure the vehicle is in 'Park' mode before attempting any repairs

Symptoms

•Single click sound when the start button is pressed
•No dashboard lights or minimal warning lights illuminated
•Vehicle does not attempt to turn over
•Power windows and other electrical components may be unresponsive
•Battery warning messages displayed (if applicable)

Diagnostic Steps

1
Check the state of the 12V battery using a multimeter to measure voltage (should be around 12.6V)
2
Inspect the battery terminals for corrosion and ensure they are clean and tight
3
Verify that the vehicle's main battery pack has sufficient charge using the Tesla app or onboard display
4
Attempt to jump-start the vehicle with a known good 12V battery or jump starter
5
Scan the vehicle for any error codes using a Tesla-compatible diagnostic tool

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
•Cleaning brush
•Jump starter or known good 12V battery
•Tesla diagnostic tool

Parts Required

•New 12V battery (if replacement is necessary)

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Diagnostic Steps

1
Check the state of the 12V battery using a multimeter to measure voltage (should be around 12.6V)
2
Inspect the battery terminals for corrosion and ensure they are clean and tight
3
Verify that the vehicle's main battery pack has sufficient charge using the Tesla app or onboard display
4
Attempt to jump-start the vehicle with a known good 12V battery or jump starter
5
Scan the vehicle for any error codes using a Tesla-compatible diagnostic tool

Solution

1. Preparation

Tools Required: Multimeter, socket set, cleaning brush, jump starter or known good 12V battery, Tesla diagnostic tool (if available).
Ensure the vehicle is in a safe location and parked.
Disconnect the main battery pack if working on electrical components.

2. Test and Replace the 12V Battery

Sub-steps:
1. Use the multimeter to confirm the 12V battery voltage; if it is below 12.4V, it may need charging or replacement.
2. If replacing, locate the 12V battery in the front trunk (frunk).
3. Remove the negative terminal first, followed by the positive terminal.
4. Remove any securing brackets and take out the old battery.
5. Install the new battery, ensuring correct polarity (positive terminal first).
6. Reconnect the terminals; tighten securely and check for any corrosion.

3. Inspect and Clean Battery Connections

Sub-steps:
1. Visually inspect the battery terminals and cable connections for corrosion or damage.
2. Use a cleaning brush to remove any corrosion from the terminals.
3. Reattach the cables securely, ensuring a tight fit.

4. Jump-Start the Vehicle (if necessary)

Sub-steps:
1. Position the jump starter or another vehicle with a good battery close to the Model S.
2. Connect the positive (+) lead to the positive terminal of the Model S's battery.
3. Connect the negative (-) lead to a grounded point on the vehicle (not directly to the negative terminal).
4. Start the jump-starting vehicle or turn on the jump starter.
5. Attempt to start the Model S.