my Tesla Model S Original (2012-2020) won’t start and just clicks what can I do?

Tesla Model S Plaid/Refresh (2021-present)

Error Codes

1-2 hours

Time

medium

Difficulty

high

Severity

3 min read

459 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). 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 systems to avoid shocks.
•Allow the vehicle to sit for a few minutes after disconnecting the battery before performing any work.

Symptoms

•Clicking sound when the start button is pressed
•Dashboard lights flicker or dim
•No power to the electric drive unit
•Potential failure of the 12V battery
•Warning messages regarding battery status may appear

Diagnostic Steps

1
Check the 12V battery voltage using a multimeter; it should be above 12.4V.
2
Inspect the 12V battery connections for corrosion or looseness.
3
Verify that the main battery pack is properly charged; check using the Tesla app or touchscreen.
4
Scan the vehicle for any error codes using a compatible OBD-II scanner.
5
Test the operation of the key fob and ensure it is functioning properly.

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 terminal cleaning brush

Parts Required

•Replacement 12V battery (if necessary)

Related Faults

Share this solution

Comments

No comments yet

Be the first to share your thoughts

Back to Generation

Diagnostic Steps

1
Check the 12V battery voltage using a multimeter; it should be above 12.4V.
2
Inspect the 12V battery connections for corrosion or looseness.
3
Verify that the main battery pack is properly charged; check using the Tesla app or touchscreen.
4
Scan the vehicle for any error codes using a compatible OBD-II scanner.
5
Test the operation of the key fob and ensure it is functioning properly.

Solution

1. Preparation

Ensure the vehicle is in a safe, well-ventilated area.
Disconnect the negative terminal of the 12V battery to prevent electrical shorts.

2. Inspect and Replace the 12V Battery

Tools Required: Socket set, multimeter, battery terminal cleaning brush.
Sub-steps:
1. Locate the 12V battery, which is usually in the front trunk (frunk).
2. Remove the cover to access the battery.
3. Clean the battery terminals using a battery terminal cleaning brush.
4. Reconnect the negative terminal and ensure it is tight.
5. If the battery voltage is below 12.4V, proceed to replace the battery.
6. Disconnect the positive terminal first, then the negative terminal.
7. Remove the old battery and install the new battery, connecting the positive terminal first followed by the negative.
8. Replace the cover and ensure everything is secure.

3. Reconnect and Test

Tools Required: None.
Sub-steps:
1. Reconnect the negative terminal of the 12V battery.
2. Attempt to start the vehicle again by pressing the start button.
3. Monitor for the clicking sound and dashboard indicators.