my Tesla Model Y Current (2020-present) won't start and just clicks what should I check

Tesla Model Y Current (2020-present)

Error Codes

1-3 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 starting issues in Tesla Model Y. Step-by-step guide with symptoms, diagnostic steps, tools, and repair instructions.

Affected Component

Electrical

Estimated Time

1-3 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the battery before working on electrical components to avoid shocks or shorts
•Allow the vehicle to cool down before inspecting components near the battery

Symptoms

•Clicking sound when attempting to start the vehicle
•No engine turnover or cranking
•Dashboard lights may dim or flicker
•Possible error messages on the screen
•Reduced power in auxiliary systems

Diagnostic Steps

1
Check the state of the 12V battery using a multimeter to ensure it has adequate voltage (above 12.4 volts)
2
Inspect the battery connections for corrosion or looseness
3
Examine the main contactor for functionality and signs of wear or damage
4
Use the Tesla app or onboard diagnostics to check for error codes related to the starting system
5
Verify that the key fob is functioning correctly and is within range

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
•Basic socket set
•Cleaning supplies
•Wire brush
•Contact cleaner

Parts Required

•New 12V battery
•Replacement main contactor

Related Faults

Share this solution

Comments

No comments yet

Be the first to share your thoughts

Back to Generation

Diagnostic Steps

1
Check the state of the 12V battery using a multimeter to ensure it has adequate voltage (above 12.4 volts)
2
Inspect the battery connections for corrosion or looseness
3
Examine the main contactor for functionality and signs of wear or damage
4
Use the Tesla app or onboard diagnostics to check for error codes related to the starting system
5
Verify that the key fob is functioning correctly and is within range

Solution

1. Preparation

Gather all tools and materials needed: multimeter, basic socket set, cleaning supplies, and any replacement parts if necessary.
Ensure the vehicle is in a safe, well-ventilated area.

2. Check and Replace the 12V Battery

Disconnect the 12V Battery:
- Locate the 12V battery, typically found in the front trunk (frunk).
- Disconnect the negative terminal first, followed by the positive terminal.
Test the Battery:
- Use a multimeter to check the battery voltage.
- If the voltage is below 12.4 volts, consider replacing the battery.
Replace the Battery:
- Remove the old battery (socket set may be required).
- Install the new battery, connecting the positive terminal first, then the negative terminal.
- Ensure connections are tight and free of corrosion.

3. Inspect and Repair Main Contactor

Access the Main Contactor:
- Depending on the model, this may involve removing panels or covers in the trunk.
Inspect the Contactor:
- Check for any visible damage or burnt contacts.
- Manually test the contactor by applying power to see if it engages.
Replace if Necessary:
- If damaged, replace the main contactor using the appropriate part.
- Follow torque specifications for any bolts or connections as per Tesla guidelines.