how to fix my Tesla Model 3 Highland (2024-present) if it keeps losing power?

Solution

1. Preparation

• Tools Required: Tesla service tools (if available), multimeter.
• Ensure the vehicle is parked on a level surface and in "Park" mode.
• Disconnect the 12V battery for safety.

2. Software Update

• Reconnect the 12V battery.
• Access the settings on the touchscreen and navigate to "Software."
• Check for updates and install any available software updates.
• Restart the vehicle by holding down the brake and pressing the two scroll wheels on the steering wheel until the screen resets.

3. Battery Inspection

• Safely access the battery pack by removing any necessary undercarriage panels.
• Inspect the battery terminals for corrosion or loose connections; tighten connections as needed.
• Use a multimeter to check the voltage output of the battery pack to ensure it is within the specified range.

4. Power Electronics Module Check

• Inspect the power electronics module for any signs of overheating or damage.
• If access allows, check the connections leading to and from the module for any loose or damaged wires.
• Replace the module if any faults are detected.

5. Test Drive

• After all checks and repairs, perform a test drive.
• Monitor the vehicle’s power delivery and ensure no warning messages appear on the dashboard.