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

472 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 a no-start condition 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.
•Ensure the vehicle is turned off and in a safe position before performing any checks.

Symptoms

•Clicking sound when attempting to start the vehicle
•Dashboard lights flicker or dim
•No engine turnover or cranking noise
•Vehicle may show 'Battery Low' warning on the display
•Possible loss of power to accessories

Diagnostic Steps

1
Check the key fob battery to ensure it is functional.
2
Open the frunk and inspect the 12V battery voltage using a multimeter.
3
Verify that the 12V battery connections are clean and securely attached.
4
Check for any error messages or alerts on the vehicle’s display.
5
Attempt to jump-start the vehicle using a portable jump starter.
6
Inspect the main battery pack for any signs of damage or 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
•Socket set
•Portable jump starter

Parts Required

•New 12V battery

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Diagnostic Steps

1
Check the key fob battery to ensure it is functional.
2
Open the frunk and inspect the 12V battery voltage using a multimeter.
3
Verify that the 12V battery connections are clean and securely attached.
4
Check for any error messages or alerts on the vehicle’s display.
5
Attempt to jump-start the vehicle using a portable jump starter.
6
Inspect the main battery pack for any signs of damage or issues.

Solution

1. Preparation

Gather necessary tools: multimeter, socket set, and a portable jump starter.
Ensure the vehicle is in a safe location and that you have the necessary equipment on hand.

2. Test the 12V Battery

Sub-steps:
1. Disconnect the negative terminal of the 12V battery to ensure safety.
2. Use a multimeter to measure the voltage of the 12V battery. A reading below 12.4 volts indicates a weak battery.
3. If the battery voltage is low, proceed to replace the 12V battery.

3. Replace the 12V Battery

Sub-steps:
1. Remove the cover from the 12V battery compartment in the frunk.
2. Disconnect the positive terminal first, followed by the negative terminal.
3. Remove the old battery and install the new 12V battery, ensuring proper orientation.
4. Connect the negative terminal first, then the positive terminal.
5. Replace the battery cover.

4. Jump-Start the Vehicle

Sub-steps:
1. Connect a portable jump starter to the 12V battery, ensuring proper polarity.
2. Attempt to start the vehicle while monitoring for any electrical response.
3. If the vehicle starts, allow it to run for a minimum of 30 minutes to charge the battery.