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

1-3 hours

Time

medium

Difficulty

high

Severity

3 min read

510 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

Diagnose and fix the clicking noise when starting your Tesla Model S Plaid. Step-by-step guide with diagnostic steps and repair instructions.

Affected Component

Electrical

Estimated Time

1-3 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the negative terminal first to avoid sparking.
•Ensure the vehicle is in 'Park' and the key fob is removed during this step.
•Disconnect the 12V battery before working on electrical components.
•Allow the vehicle's systems to power down before inspection.

Symptoms

•Clicking noise when attempting to start the vehicle
•Dashboard warning lights illuminated
•Vehicle does not start or starts intermittently
•Battery management system alerts
•Reduced performance or sluggish response

Diagnostic Steps

1
Check the state of charge of the high-voltage battery using the vehicle's display.
2
Inspect the 12V battery voltage with a multimeter to ensure it is above 12.4V.
3
Verify connections and terminals of the 12V battery for corrosion or looseness.
4
Scan for error codes using the Tesla service mode to identify potential fault codes.
5
Perform a visual inspection of the starter motor and associated wiring harness for damage or wear.

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
•Torque wrench

Parts Required

•12V battery (if found defective)
•Starter motor (if found defective)

Related Faults

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Diagnostic Steps

1
Check the state of charge of the high-voltage battery using the vehicle's display.
2
Inspect the 12V battery voltage with a multimeter to ensure it is above 12.4V.
3
Verify connections and terminals of the 12V battery for corrosion or looseness.
4
Scan for error codes using the Tesla service mode to identify potential fault codes.
5
Perform a visual inspection of the starter motor and associated wiring harness for damage or wear.

Solution

1. Preparation

Tools Required: Multimeter, socket set, torque wrench
Ensure the vehicle is parked on a level surface and in "Park" mode.
Disconnect the vehicle from any charging sources.

2. Inspect and Test the 12V Battery

Sub-steps:
1. Open the rear trunk and locate the 12V battery compartment.
2. Use a multimeter to check the voltage; it should read above 12.4V.
3. If the voltage is low, proceed to recharge or replace the battery.
Safety Warning: Disconnect the negative terminal first to avoid sparking.

3. Clean and Secure Connections

Sub-steps:
1. Disconnect the 12V battery cables (negative first, then positive).
2. Clean the terminals and cable ends with a wire brush or terminal cleaner.
3. Reconnect the terminals securely, ensuring tightness and no corrosion.
Torque Specification: Tighten terminal connections to manufacturer's specifications (consult service manual).

4. Inspect Starter Motor and Wiring

Sub-steps:
1. Locate the starter motor (consult service manual for exact location).
2. Visually inspect for any physical damage or loose connections.
3. Test the starter motor operation by applying 12V directly (if applicable).
Safety Warning: Ensure the vehicle is in "Park" and the key fob is removed during this step.

5. Replace Components if Necessary

If the 12V battery is defective or if the starter motor is not functioning correctly, replace the component with OEM parts.
Follow the manufacturer's specifications for installation and torque settings.