what to do if my Tesla Model S Plaid/Refresh (2021-present) won’t start after charging

Tesla Model S Plaid/Refresh (2021-present)

Error Codes

1-2 hours

Time

medium

Difficulty

high

Severity

4 min read

602 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 starting issues in Tesla Model S Plaid after charging. 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 systems.
•Allow the vehicle to power down completely before performing any repairs.

Symptoms

•No response when pressing the start button
•Dashboard lights illuminated but no power to drivetrain
•Error messages on the touchscreen
•Battery charge indicator shows full but vehicle remains unresponsive
•Unusual sounds from the battery or charging system

Diagnostic Steps

1
Check the vehicle's status using the Tesla mobile app to see if there are any alerts or notifications.
2
Inspect the charging cable and connection for any signs of damage or poor connection.
3
Verify that the battery is indeed charged by checking the charging station's status.
4
Attempt to perform a soft reset of the touchscreen by holding down both scroll wheels on the steering wheel until the screen reboots.
5
Use the Tesla app to check for software updates and confirm that the vehicle's software is up to date.
6
Test the 12V battery status, as a weak 12V battery can prevent the vehicle from starting.

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

Parts Required

•Replacement 12V battery

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Diagnostic Steps

1
Check the vehicle's status using the Tesla mobile app to see if there are any alerts or notifications.
2
Inspect the charging cable and connection for any signs of damage or poor connection.
3
Verify that the battery is indeed charged by checking the charging station's status.
4
Attempt to perform a soft reset of the touchscreen by holding down both scroll wheels on the steering wheel until the screen reboots.
5
Use the Tesla app to check for software updates and confirm that the vehicle's software is up to date.
6
Test the 12V battery status, as a weak 12V battery can prevent the vehicle from starting.

Solution

1. Preparation

Ensure the vehicle is in a safe and accessible location.
Gather necessary tools, including a multimeter and any replacement parts if needed.

2. Inspect Charging System

Tools Required: Multimeter
Check the voltage of the charging cable at the outlet to ensure proper voltage output.
Inspect the charging port on the vehicle for any debris or damage.
Clean the charging port if necessary to ensure a good connection.

3. Test and Replace 12V Battery

Tools Required: Socket set, multimeter
Disconnect the negative terminal of the 12V battery and then the positive terminal.
Use the multimeter to test the voltage of the 12V battery; it should be around 12.6 volts when fully charged.
If the voltage is low, replace the 12V battery with a new one (ensure it is compatible with the Model S).
- Sub-steps for replacement:
  - Remove the battery cover.
  - Disconnect the old battery and remove it from the compartment.
  - Install the new battery, reconnecting the positive terminal first and then the negative terminal.
  - Replace the battery cover securely.

4. Reset Vehicle Systems

Press and hold the brake pedal.
Press the start button while holding the brake to attempt a system reset.
If no response, try holding down both scroll wheels on the steering wheel again to reboot the touchscreen.

5. Recheck Charging System

After addressing any 12V battery issues, reconnect the vehicle to the charger.
Confirm that the vehicle begins to charge and check for any error codes displayed.