how to fix my Tesla Model S Plaid/Refresh (2021-present) that won't start

Tesla Model S Plaid/Refresh (2021-present)

Error Codes

1-2 hours

Time

medium

Difficulty

high

Severity

3 min read

492 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 no-start issue in Tesla Model S Plaid (2021-present). Step-by-step guide with symptoms, diagnostic steps, 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 connections.
•Ensure the vehicle is on a flat surface and in 'Park' before starting repairs.

Symptoms

•Power button does not respond
•Dashboard lights are off
•No sound from the electric motor
•Key fob not detected
•Screen remains black

Diagnostic Steps

1
Ensure the vehicle is in 'Park' and try to start it again.
2
Check the key fob battery and replace if necessary.
3
Inspect the 12V battery voltage using a multimeter.
4
Verify that the main battery is charged via the Tesla app or charging station.
5
Attempt a soft reboot of the vehicle by holding down both steering wheel buttons.
6
Check for any firmware updates or error messages in the Tesla app.

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

•Socket set
•Multimeter
•Torque wrench
•Tesla charging cable

Parts Required

•New 12V battery

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Diagnostic Steps

1
Ensure the vehicle is in 'Park' and try to start it again.
2
Check the key fob battery and replace if necessary.
3
Inspect the 12V battery voltage using a multimeter.
4
Verify that the main battery is charged via the Tesla app or charging station.
5
Attempt a soft reboot of the vehicle by holding down both steering wheel buttons.
6
Check for any firmware updates or error messages in the Tesla app.

Solution

1. Preparation

Gather all necessary tools and parts.
Ensure the vehicle is in a safe location.
Turn off any external power sources.

2. Inspect and Replace the 12V Battery

Tools Required: Socket set, multimeter, torque wrench.
Sub-steps:
1. Open the front trunk (frunk) and locate the 12V battery.
2. Disconnect the negative terminal first, followed by the positive terminal.
3. Remove the battery hold-down bracket using the socket set.
4. Carefully lift the old 12V battery out.
5. Install the new 12V battery in the reverse order. Ensure connections are tight.
6. Torque the battery terminals to the manufacturer's specifications (typically around 10-15 ft-lbs).

3. Check and Charge the Main Battery

Tools Required: Tesla charging cable.
Sub-steps:
1. Connect the Tesla charging cable to the vehicle and plug it into a charging station.
2. Monitor the charging status on the Tesla app until the battery reaches at least a minimal charge level.
3. Try starting the vehicle again after charging.

4. Perform a System Reboot

Sub-steps:
1. Hold down both scroll wheels on the steering wheel until the screen goes black (approximately 10 seconds).
2. Wait for the Tesla logo to appear and release the scroll wheels.
3. Allow the system to reboot completely and attempt to power on the vehicle.