why does my Tesla Model S Plaid/Refresh (2021-present) make a clicking noise when starting

Tesla Model S Plaid/Refresh (2021-present)

Error Codes

1-2 hours

Time

medium

Difficulty

high

Severity

3 min read

491 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 the clicking noise during startup in Tesla Model S Plaid. 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 shock or short circuits.

Symptoms

•Clicking noise during engine start
•Dashboard warning lights illuminated
•Failure to start or prolonged cranking
•Electrical accessories (lights, radio) malfunctioning
•Reduced power or sluggish acceleration when starting

Diagnostic Steps

1
Inspect the 12V battery voltage using a multimeter to ensure it is above 12.4 volts.
2
Check for any visible corrosion or loose connections at the battery terminals.
3
Scan the vehicle's computer for error codes using the Tesla service tool to identify potential issues.
4
Verify the condition of the main battery pack through the vehicle's diagnostic display.
5
Test the starter motor operation if applicable, ensuring it is engaging properly.

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
•Diagnostic scanner
•Wire brush

Parts Required

•12V battery (if replacement is necessary)

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Diagnostic Steps

1
Inspect the 12V battery voltage using a multimeter to ensure it is above 12.4 volts.
2
Check for any visible corrosion or loose connections at the battery terminals.
3
Scan the vehicle's computer for error codes using the Tesla service tool to identify potential issues.
4
Verify the condition of the main battery pack through the vehicle's diagnostic display.
5
Test the starter motor operation if applicable, ensuring it is engaging properly.

Solution

1. Preparation

Gather necessary tools: multimeter, socket set, and diagnostic scanner.
Ensure the vehicle is in "Park" and power down the vehicle completely.
Disconnect the 12V battery before commencing work.

2. Inspect and Test the 12V Battery

Sub-step 1: Remove the cover of the 12V battery compartment.
Sub-step 2: Use a multimeter to check the voltage of the 12V battery.
Sub-step 3: If the voltage is below 12.4V, replace the battery.
Tools Required: Multimeter, socket set.

3. Clean and Tighten Battery Connections

Sub-step 1: Inspect the battery terminals for corrosion.
Sub-step 2: Clean any corrosion using a wire brush and a mixture of baking soda and water.
Sub-step 3: Tighten the battery connections securely to ensure good contact.
Tools Required: Wire brush, socket set.

4. Check Starter Motor Functionality

Sub-step 1: If equipped, test the starter motor by attempting to engage it while monitoring voltage drop.
Sub-step 2: If the starter motor does not function, remove and bench test it for proper operation.
Tools Required: Socket set, multimeter.

5. Reconnect Battery and Test

Sub-step 1: Reconnect the 12V battery and ensure all connections are secure.
Sub-step 2: Attempt to start the vehicle and listen for any abnormal sounds.
Sub-step 3: If the issue persists, further diagnostics may be required on the main battery pack or electrical systems.