my Tesla Model S Original (2012-2020) won't start, 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

500 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). 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 12V battery before working on electrical systems.
•Ensure the vehicle is in 'Park' and the parking brake is engaged before starting repairs.

Symptoms

•Clicking noise when the start button is pressed
•Dashboard lights may illuminate briefly
•No engine cranking or movement
•Possible 'low battery' warning on the display
•Unresponsive power windows or accessories

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 loose terminals.
3
Scan the vehicle’s onboard diagnostics (OBD-II) for any error codes that might indicate an underlying issue.
4
Verify the state of charge of the high-voltage battery using the Tesla app or onboard display.
5
Attempt a reset of the vehicle's systems by holding down the brake pedal and pressing the start button for 10 seconds.

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
•OBD-II scanner
•Wire brush

Parts Required

•New 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 loose terminals.
3
Scan the vehicle’s onboard diagnostics (OBD-II) for any error codes that might indicate an underlying issue.
4
Verify the state of charge of the high-voltage battery using the Tesla app or onboard display.
5
Attempt a reset of the vehicle's systems by holding down the brake pedal and pressing the start button for 10 seconds.

Solution

1. Preparation

Gather necessary tools: multimeter, socket set, and cleaning supplies.
Ensure the vehicle is parked on a flat surface and the parking brake is engaged.

2. Check and Replace 12V Battery

Step 1: Remove the frunk (front trunk) cover.
- Tools: Socket set.
Step 2: Disconnect the negative terminal of the 12V battery first, followed by the positive terminal.
Step 3: Remove the old 12V battery by unbolting it from its mount.
Step 4: If necessary, clean the battery terminal connections with a wire brush.
Step 5: Install the new 12V battery, ensuring the positive terminal is connected first, followed by the negative terminal.
Step 6: Replace the frunk cover.

3. Inspect High-Voltage Battery Connections

Step 1: Lift the vehicle and securely support it with jack stands.
Step 2: Remove the underbody cover to access the high-voltage battery connections.
Step 3: Inspect the high-voltage battery connectors for any signs of damage or corrosion.
Step 4: Tighten any loose connections to manufacturer specifications.

4. Clear Any Fault Codes

Step 1: Reconnect the OBD-II scanner to the vehicle’s diagnostic port.
Step 2: Clear any stored error codes from the system.
Step 3: Perform a test drive to check if the issue persists.