how to fix my Tesla Model S Original (2012-2020) that won't start and just clicks?

Tesla Model S Plaid/Refresh (2021-present)

Error Codes

1-2 hours

Time

medium

Difficulty

high

Severity

3 min read

503 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 Tesla Model S that won't start and just clicks. 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

•Always wear safety goggles and gloves when working on electrical components.
•Disconnect the 12V battery before performing any repairs on electrical systems.

Symptoms

•Clicking sound when the start button is pressed
•Dashboard lights and displays may illuminate
•No engine cranking or turnover
•Possible alerts on the touchscreen or warning lights
•Reduced or no power to accessories

Diagnostic Steps

1
Check the 12V battery voltage using a multimeter.
2
Inspect the 12V battery connections for corrosion or looseness.
3
Verify if the key fob is functioning properly and is within range.
4
Scan for error codes using an OBD-II scanner to check for any faults.
5
Inspect the main battery contactors for proper operation.

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
•Basic hand tools

Parts Required

•Replacement 12V battery
•Key fob battery

Related Faults

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Diagnostic Steps

1
Check the 12V battery voltage using a multimeter.
2
Inspect the 12V battery connections for corrosion or looseness.
3
Verify if the key fob is functioning properly and is within range.
4
Scan for error codes using an OBD-II scanner to check for any faults.
5
Inspect the main battery contactors for proper operation.

Solution

1. Preparation

Gather tools: multimeter, OBD-II scanner, basic hand tools.
Ensure the vehicle is in a safe location with adequate access to the 12V battery.

2. Check the 12V Battery

Sub-step 1: Open the frunk (front trunk) and locate the 12V battery.
Sub-step 2: Use a multimeter to measure the voltage of the 12V battery. A healthy battery should read above 12.4V.
Sub-step 3: If the voltage is low, proceed to jump-start or replace the battery.
Sub-step 4: If the battery is not holding a charge, disconnect the negative terminal first, followed by the positive terminal.

3. Inspect Battery Connections

Sub-step 1: Clean any corrosion from the battery terminals and cable ends using a wire brush.
Sub-step 2: Reconnect the positive terminal first, then the negative terminal, ensuring they are tight.
Sub-step 3: Retry starting the vehicle after reconnecting.

4. Test Key Fob Functionality

Sub-step 1: Ensure the key fob has a functioning battery. Replace if necessary.
Sub-step 2: Approach the vehicle with the key fob and verify if the doors unlock automatically, indicating it's detected.

5. Check Main Battery Contactors

Sub-step 1: Use the Tesla service manual to locate and access the main battery contactors.
Sub-step 2: Inspect for any visible damage or signs of wear.
Sub-step 3: If necessary, test the operation of the contactors using appropriate diagnostic tools as per the service manual.