why does my Tesla Model 3 Highland (2024-present) make a clicking noise when starting

Solution

1. Preparation

• Tools Required: Multimeter, socket set, OBD-II scanner
• Disconnect the negative terminal of the 12V battery to ensure safety while working on electrical components.

2. Test and Replace the 12V Battery

1. Check Voltage: Use a multimeter to measure the voltage of the 12V battery.
   • If voltage is below 12.4 volts, proceed to replace the battery.
2. Remove Battery:
   • Use a socket set to unbolt the battery hold-down bracket.
   • Carefully disconnect the positive terminal first, followed by the negative terminal.
   • Remove the battery from the vehicle.
3. Install New Battery:
   • Place the new 12V battery in the compartment.
   • Connect the positive terminal first, then the negative terminal.
   • Secure the battery with the hold-down bracket.

3. Inspect and Repair Starter Connections

1. Visual Inspection: Check the starter motor and its wiring for damage or disconnections.
2. Reconnect Wires: If any wires are loose, reconnect them securely.
3. Test Starter: If issues persist, consider removing the starter motor for further testing or replacement.