Tesla Model 3 Highland (2024-present) shows B101B code what does it mean

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the negative terminal of the 12V battery to ensure safety.
• Allow the vehicle to sit for a few minutes to discharge any residual power.

2. Inspect Wiring and Connectors

• Remove the body control module cover (if applicable).
• Visually inspect all wiring and connectors for damage.
• Use a multimeter to test for continuity in the wiring harness.
• Repair or replace any damaged wiring or connectors as necessary.

3. Check and Replace Fuses

• Locate the fuse box and identify fuses related to the body control module.
• Inspect the fuses for continuity using a multimeter.
• Replace any blown fuses with the correct amperage rating.

4. Reprogram/Update Body Control Module

• Connect the Tesla service tool to the vehicle.
• Follow the prompts to check for and install any available software updates for the body control module.
• Reboot the vehicle's systems as needed.

5. Reconnect Battery and Test

• Reconnect the negative terminal of the 12V battery.
• Clear any remaining diagnostic codes using the OBD-II scanner.
• Start the vehicle and perform a test drive to ensure all systems are functioning correctly.