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

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

Diagnose and fix the clicking noise on 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 vehicle from any charging source before beginning work.
•Be cautious around high-voltage components when inspecting the battery pack.

Symptoms

•Clicking noise when attempting to start the vehicle
•No cranking or engine turnover
•Dashboard warning lights may illuminate
•Inconsistent power to electrical systems
•Possible reduction in battery charge level

Diagnostic Steps

1
Check the vehicle's battery charge level using the touchscreen interface.
2
Inspect the 12V battery for any visible corrosion or damage.
3
Use an OBD-II scanner to check for any error codes related to the starting system.
4
Verify the integrity of the battery connections and terminals for tightness and cleanliness.
5
Conduct a visual inspection of the main contactors and relays within the battery pack.
6
Test the 12V battery voltage with a multimeter to ensure it is within the proper range (12.4V - 12.6V).

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

•OBD-II scanner
•Multimeter
•Socket set
•Torque wrench

Parts Required

•12V battery (if replacement is necessary)
•Contactors/relays (if faulty)

Related Faults

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Diagnostic Steps

1
Check the vehicle's battery charge level using the touchscreen interface.
2
Inspect the 12V battery for any visible corrosion or damage.
3
Use an OBD-II scanner to check for any error codes related to the starting system.
4
Verify the integrity of the battery connections and terminals for tightness and cleanliness.
5
Conduct a visual inspection of the main contactors and relays within the battery pack.
6
Test the 12V battery voltage with a multimeter to ensure it is within the proper range (12.4V - 12.6V).

Solution

1. Preparation

Ensure the vehicle is in "Park."
Gather all necessary tools and components.
Disconnect the vehicle from any charging source for safety.

2. Inspect and Replace 12V Battery (if necessary)

Tools Required: Socket set, multimeter, torque wrench.
Sub-steps:
1. Open the front trunk (frunk) and locate the 12V battery compartment.
2. Disconnect the negative terminal first, followed by the positive terminal (this helps prevent short circuits).
3. Remove any securing brackets or covers as necessary to access the battery.
4. If the battery shows signs of failure, replace it with a new battery rated for your model.
5. Reconnect the positive terminal first, followed by the negative terminal, ensuring secure connections.
6. Torque the terminals to manufacturer specifications (check service manual for exact values).

3. Inspect Contactors and Relays

Tools Required: Multimeter, socket set.
Sub-steps:
1. Locate the contactor and relay assembly within the battery pack (refer to the service manual for specific location).
2. Visually inspect for any burnt or damaged components.
3. Use a multimeter to test the continuity of the contactors and relays.
4. Replace any faulty components with new, OEM parts.