my Tesla Model S Original (2012-2020) won't start and just clicks what should I do

Tesla Model S Plaid/Refresh (2021-present)

Error Codes

1-2 hours

Time

medium

Difficulty

high

Severity

3 min read

457 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 (2012-2020) with clicking sounds. Step-by-step guide for troubleshooting and repair.

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 avoid shocks or shorts.

Symptoms

•Clicking sound when the start button is pressed
•No power to the dashboard or accessories
•Headlights and interior lights dim or flicker
•Battery charge level appears low
•Error messages related to battery or power might display

Diagnostic Steps

1
Check the battery charge level using the vehicle’s display or mobile app.
2
Inspect the 12V battery for any visible damage or corrosion on terminals.
3
Test the 12V battery voltage using a multimeter (should be above 12.4V for a healthy battery).
4
Verify that all connections to the battery are secure and free of corrosion.
5
Inspect the main battery pack for any error codes using the Tesla mobile app or Service Mode.
6
Attempt to jump-start the 12V battery with jumper cables and another vehicle, if necessary.

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
•Jumper cables
•Safety goggles

Parts Required

•12V battery

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Diagnostic Steps

1
Check the battery charge level using the vehicle’s display or mobile app.
2
Inspect the 12V battery for any visible damage or corrosion on terminals.
3
Test the 12V battery voltage using a multimeter (should be above 12.4V for a healthy battery).
4
Verify that all connections to the battery are secure and free of corrosion.
5
Inspect the main battery pack for any error codes using the Tesla mobile app or Service Mode.
6
Attempt to jump-start the 12V battery with jumper cables and another vehicle, if necessary.

Solution

1. Preparation

Gather tools: multimeter, socket set, jumper cables, and safety goggles.
Park the vehicle in a safe location and ensure it is in "Park."

2. Check and Replace the 12V Battery

Disconnect Power:
- Remove the key fob from the vicinity to prevent accidental starting.
- Disconnect the 12V battery negative terminal first, followed by the positive terminal.
Remove the Battery:
- Open the front trunk (frunk) and locate the 12V battery.
- Use a socket set to remove the battery hold-down clamp.
- Carefully lift out the battery.
Install New or Charged Battery:
- If replacing, install a new 12V battery that meets Tesla specifications (usually an AGM type).
- Connect the positive terminal first, followed by the negative terminal.
- Ensure terminals are tightened properly to avoid future issues.

3. Reboot the Vehicle

With the new or charged battery connected, press and hold the brake pedal and the start button for a few seconds. This will reboot the vehicle’s systems.