my Tesla Model S Original (2012-2020) does not 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

511 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 with clicking sound in Tesla Model S (2012-2020). Step-by-step guide with diagnostic procedures 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 systems.
•Ensure the vehicle is in a safe, well-ventilated area during repairs.

Symptoms

•Clicking sound when attempting to start the vehicle
•No engine turnover or start
•Dashboard lights dimming or flickering
•Possible warning messages on the screen (e.g., 'Battery Low')
•Unresponsive power features (e.g., windows, doors)

Diagnostic Steps

1
Check the 12V battery voltage using a multimeter to determine if it is below the minimum threshold.
2
Inspect battery connections for corrosion, looseness, or damage.
3
Examine the main battery pack status through the vehicle's touchscreen for any alerts or issues.
4
Test the operation of the 12V battery by attempting to jump-start the vehicle.
5
Scan for fault codes using a Tesla-compatible diagnostic tool to identify any underlying 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
•Jump starter or jumper cables
•Basic hand tools (socket set)

Parts Required

•New 12V battery (if needed)

Related Faults

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Diagnostic Steps

1
Check the 12V battery voltage using a multimeter to determine if it is below the minimum threshold.
2
Inspect battery connections for corrosion, looseness, or damage.
3
Examine the main battery pack status through the vehicle's touchscreen for any alerts or issues.
4
Test the operation of the 12V battery by attempting to jump-start the vehicle.
5
Scan for fault codes using a Tesla-compatible diagnostic tool to identify any underlying issues.

Solution

1. Preparation

Tools Required: Multimeter, jump starter or jumper cables, basic hand tools (socket set)
Ensure the vehicle is parked in a safe location with adequate ventilation.

2. Check and Replace the 12V Battery

Disconnect the 12V Battery:
- Open the front trunk (frunk) and locate the 12V battery.
- Using a socket wrench, disconnect the negative terminal first, followed by the positive terminal.
Inspect the Battery:
- Use a multimeter to measure the battery voltage; it should be above 12.4 volts.
- If the voltage is low or the battery is over 4 years old, consider replacing it.
Replace the Battery:
- Remove the old battery from its tray.
- Install the new 12V battery, ensuring correct orientation.
- Connect the positive terminal first, followed by the negative terminal.

3. Inspect and Repair Electrical Connections

Examine Battery Cables:
- Look for signs of corrosion or damage on the battery terminals and cables.
- Clean any corrosion with a wire brush and apply a protective spray.
Secure Connections:
- Ensure that all connections are tight and secure.

4. Test the Vehicle

Reconnect the Battery:
- After replacing or securing the battery, reconnect the terminals and close the frunk.
Attempt to Start the Vehicle:
- Press the brake pedal and try to start the vehicle.
- Listen for any changes in sounds indicating the vehicle is attempting to start.