how to fix Tesla Model 3 Original (2017-2023) if it won't start just clicks

Tesla Model 3 Highland (2024-present)

Error Codes

1-2 hours

Time

medium

Difficulty

high

Severity

3 min read

568 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 3 (2017-2023) with clicking sound. Step-by-step guide for troubleshooting and repairs.

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 prevent shocks or shorts
•Wear safety gloves and goggles when handling batteries and electrical components

Symptoms

•Single click sound when the start button is pressed
•Dashboard lights illuminate but engine does not start
•No power to accessories or minimal response from electrical systems
•Possible error message on the touchscreen related to low battery or electrical issue
•Battery warning light may be illuminated

Diagnostic Steps

1
Check the battery voltage using a multimeter to ensure it is within the acceptable range (12.4V or higher)
2
Inspect the 12V battery terminals for corrosion or loose connections
3
Verify the status of the main battery pack using the Tesla mobile app or vehicle diagnostics
4
Check the condition of the battery management system (BMS) and related fuses in the fuse box
5
Perform a hard reset of the vehicle by holding down the two scroll wheels on the steering wheel until the touchscreen reboots

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
•Wire brush
•Battery terminal cleaner
•Safety gloves

Parts Required

•Replacement fuses as needed
•New 12V battery (if necessary)

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Symptoms

•Single click sound when the start button is pressed

•Dashboard lights illuminate but engine does not start

•No power to accessories or minimal response from electrical systems

•Possible error message on the touchscreen related to low battery or electrical issue

•Battery warning light may be illuminated

Diagnostic Steps

1
Check the battery voltage using a multimeter to ensure it is within the acceptable range (12.4V or higher)
2
Inspect the 12V battery terminals for corrosion or loose connections
3
Verify the status of the main battery pack using the Tesla mobile app or vehicle diagnostics
4
Check the condition of the battery management system (BMS) and related fuses in the fuse box
5
Perform a hard reset of the vehicle by holding down the two scroll wheels on the steering wheel until the touchscreen reboots

Solution

1. Preparation

Gather tools: multimeter, socket set, wire brush, battery terminal cleaner, and safety gloves.
Ensure the vehicle is in a safe location with access to the battery.

2. Check and Charge 12V Battery

Sub-step 1: Disconnect the negative terminal of the 12V battery to prevent any electrical shorts.
Sub-step 2: Inspect the battery condition. If the voltage is below 12.4V, use a compatible charger to bring it to full charge.
Sub-step 3: Clean the battery terminals with a wire brush and terminal cleaner to remove any corrosion.
Sub-step 4: Reconnect the terminals securely, starting with the positive terminal followed by the negative terminal.

3. Inspect and Replace Fuses

Sub-step 1: Open the fuse box located under the dashboard or rear trunk.
Sub-step 2: Identify and check the fuses related to the electrical system and BMS for continuity using a multimeter.
Sub-step 3: Replace any blown fuses with ones of the correct amperage.

4. Reset the Battery Management System (BMS)

Sub-step 1: Ensure the vehicle is powered off completely.
Sub-step 2: Leave the vehicle off for 10-15 minutes to allow the BMS to reset.
Sub-step 3: Power on the vehicle and check if the no-start condition persists.

5. Seek Professional Help if Necessary

If the issue continues after these steps, it may be necessary to contact Tesla service or a qualified technician for further diagnosis, as there may be issues with the main battery pack or internal components.