how to fix a clicking noise when starting my Tesla Model S Original (2012-2020)

Tesla Model S Plaid/Refresh (2021-present)

Error Codes

1-2 hours

Time

medium

Difficulty

high

Severity

3 min read

495 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 clicking noise when starting your Tesla Model S (2012-2020). 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

•Disconnect the 12V battery before working on electrical components to avoid shocks or shorts.

Symptoms

•Clicking noise when the start button is pressed
•No engine turnover or cranking sound
•Dashboard lights dimming or flickering
•Possible error messages on the display
•Battery charge level appears sufficient but vehicle does not start

Diagnostic Steps

1
Check the 12V battery voltage using a multimeter to ensure it is above 12.4 volts.
2
Inspect the battery connections for corrosion or looseness.
3
Scan the vehicle’s onboard diagnostics using an OBD-II scanner for any fault codes.
4
Examine the contact points of the main battery disconnect switch.
5
Test the starter relay operation by swapping it with a similar relay in the fuse box.

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
•Socket set
•Torque wrench
•Cleaning supplies (baking soda, water)

Parts Required

•12V battery (if replacement is necessary)
•Starter relay (if replacement is necessary)

Related Faults

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Diagnostic Steps

1
Check the 12V battery voltage using a multimeter to ensure it is above 12.4 volts.
2
Inspect the battery connections for corrosion or looseness.
3
Scan the vehicle’s onboard diagnostics using an OBD-II scanner for any fault codes.
4
Examine the contact points of the main battery disconnect switch.
5
Test the starter relay operation by swapping it with a similar relay in the fuse box.

Solution

1. Preparation

Gather tools: multimeter, OBD-II scanner, socket set, torque wrench, and cleaning supplies.
Ensure vehicle is in a safe and accessible location.
Disconnect the 12V battery before working on electrical components.

2. Inspect and Clean Battery Connections

Sub-steps:
1. Remove the negative terminal first, followed by the positive terminal from the 12V battery.
2. Clean any corrosion from the battery terminals and cable ends using a mixture of baking soda and water.
3. Reconnect the positive terminal first, then the negative terminal and ensure they are tight.
4. Recheck the connections after cleaning.

3. Test and Replace the 12V Battery (if necessary)

Sub-steps:
1. Use a multimeter to measure the voltage of the 12V battery.
2. If the voltage is below 12.4 volts, replace the battery.
3. To replace, remove the old battery and install a new OEM-compatible 12V battery, ensuring proper orientation.
4. Reconnect the battery terminals securely.

4. Check and Replace the Starter Relay (if needed)

Sub-steps:
1. Locate the starter relay in the fuse box.
2. Remove the relay and inspect for any visible damage or corrosion.
3. Replace the relay with a new one if necessary.
4. Reinstall the relay and ensure it clicks into place.