my Tesla Model S Original (2012-2020) won't start just clicks help

Tesla Model S Plaid/Refresh (2021-present)

Error Codes

1-2 hours

Time

medium

Difficulty

high

Severity

3 min read

477 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 negative terminal before working on the electrical systems.
•Be cautious when working with high-voltage systems; ensure safety measures are followed.

Symptoms

•Clicking sound when trying to start the vehicle
•Dashboard displays no power or limited power
•No response from the electric motor
•Possible warning lights illuminated on the dashboard
•12V battery warning message may appear

Diagnostic Steps

1
Check the 12V battery voltage using a multimeter to ensure it is above 12.4 volts.
2
Inspect the 12V battery connections for corrosion or looseness.
3
Verify the status of the main battery pack using the vehicle's onboard diagnostics.
4
Attempt to jump-start the vehicle with a separate 12V battery or jump starter.
5
Examine the contactor operation by listening for clicks when the vehicle is powered on.

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
•OBD-II scanner
•Socket set
•Torque wrench

Parts Required

•Replacement 12V battery

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 to ensure it is above 12.4 volts.
2
Inspect the 12V battery connections for corrosion or looseness.
3
Verify the status of the main battery pack using the vehicle's onboard diagnostics.
4
Attempt to jump-start the vehicle with a separate 12V battery or jump starter.
5
Examine the contactor operation by listening for clicks when the vehicle is powered on.

Solution

1. Preparation

Gather tools and replacement parts.
Ensure the vehicle is in a safe, working area.
Disconnect the negative terminal of the 12V battery for safety.

2. Replace the 12V Battery

Access the Battery:
- Open the front trunk (frunk).
- Locate the 12V battery, which is typically positioned on the driver's side.
Remove the Old Battery:
- Disconnect the negative terminal first, followed by the positive terminal.
- Remove any securing brackets or covers.
- Carefully lift the battery out of the compartment.
Install the New Battery:
- Place the new 12V battery into the compartment.
- Secure it with brackets or covers as necessary.
- Connect the positive terminal first, followed by the negative terminal.

3. Check High-Voltage Battery and Contactors

Inspect Contactors:
- Reconnect the 12V battery and power on the vehicle.
- Listen for the high-voltage contactors to click; if they do not, further diagnostics may be required.
Scan for Fault Codes:
- Use an OBD-II scanner or Tesla service tool to check for any fault codes related to the battery pack or contactors.

4. Test the Vehicle

Attempt to start the vehicle again after replacing the 12V battery and ensuring the contactors are functioning.