my Tesla Model S Plaid/Refresh (2021-present) won't start and just clicks what to do

Solution

1. Preparation

• Tools Required:
  • Multimeter
  • Wrench (for battery terminals)
  • Torque wrench (if applicable)
• Ensure the vehicle is parked safely and in a well-ventilated area.
• Disconnect the main battery pack if necessary for safety.

2. Check 12V Battery

1. Inspect Battery Condition:

   • Locate the 12V battery under the front trunk (frunk).
   • Use a multimeter to confirm the voltage is above 12.4V. If it is below, proceed to the next step.

2. Charge or Replace 12V Battery:

   • If the battery is low, connect a compatible battery charger to the terminals.
   • If the battery does not hold a charge, prepare to replace it.
   • Disconnect the negative terminal first, followed by the positive terminal.
   • Remove the old battery and install the new one, connecting the positive terminal first.
   • Tighten connections to manufacturer's specifications (usually around 10-12 ft-lbs).

3. Reset System

1. Perform a Soft Reset:
   • With the vehicle in "Park," press and hold both scroll wheels on the steering wheel until the touchscreen resets.
   • Wait for the reboot to complete and check if the vehicle starts.

4. Check High Voltage Battery

• If the vehicle still does not start, check the high-voltage battery status through the Tesla app.
• If the high-voltage battery is depleted, it may need to be charged using a Tesla Supercharger.