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

Tesla Model 3 Highland (2024-present)

Error Codes

1-2 hours

Time

medium

Difficulty

high

Severity

3 min read

534 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 repair.

Affected Component

Electrical

Estimated Time

1-2 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Always disconnect the negative terminal first to prevent electrical shorts.
•Wear gloves and goggles to avoid contact with battery acid.
•Ensure you are seated and safe while performing the reset.

Symptoms

•Clicking sound when attempting to start the car
•Dashboard lights flicker or dim
•No engine cranking
•Unable to engage accessory or drive modes
•Possible error messages on the display (e.g., low battery warning)

Diagnostic Steps

1
Check the battery state of charge using the vehicle's display or mobile app.
2
Inspect the 12V battery for any visible damage or signs of wear.
3
Verify the battery connections for corrosion or loose terminals.
4
Perform a reset of the vehicle's systems by holding down the brake and pressing the steering wheel controls.
5
Use an OBD-II scanner to check for any related error codes.

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

•Socket set
•Multimeter
•Wire brush
•Cleaning solution

Parts Required

•12V battery (if replacement is necessary)

Related Faults

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Diagnostic Steps

1
Check the battery state of charge using the vehicle's display or mobile app.
2
Inspect the 12V battery for any visible damage or signs of wear.
3
Verify the battery connections for corrosion or loose terminals.
4
Perform a reset of the vehicle's systems by holding down the brake and pressing the steering wheel controls.
5
Use an OBD-II scanner to check for any related error codes.

Solution

1. Preparation

Ensure the vehicle is in a safe location with adequate space to work.
Gather tools: socket set, multimeter, and a jump starter or alternate power source if necessary.
Safety: Make sure the vehicle is in "Park" mode.

2. Check and Replace the 12V Battery

Sub-steps:
1. Open the trunk and locate the 12V battery, which is typically situated on the left side.
2. Disconnect the negative terminal first, followed by the positive terminal using the socket set.
3. Remove the old battery from the bracket.
4. Install the new 12V battery, ensuring correct polarity (positive terminal first, then negative).
Tools Required: Socket set.
Safety Warnings: Always disconnect the negative terminal first to prevent electrical shorts.

3. Inspect and Clean Battery Connections

Sub-steps:
1. Examine the battery terminals and connectors for corrosion or dirt.
2. Clean any corroded areas using a mixture of baking soda and water, and a wire brush.
3. Dry the connections thoroughly before reattaching.
4. Reconnect the terminals securely, ensuring a tight fit.
Tools Required: Wire brush, cleaning solution.
Safety Warnings: Wear gloves and goggles to avoid contact with battery acid.

4. Perform System Reset

Sub-steps:
1. With the vehicle in "Park," press and hold the brake pedal.
2. Simultaneously, press and hold the two scroll wheels on the steering wheel until the screen turns off and then back on.
3. Release the controls and allow the system to reboot.
Tools Required: None.
Safety Warnings: Ensure you are seated and safe while performing the reset.