how to fix B1000 code in Tesla Model S Plaid/Refresh (2021-present)

Solution

1. Preparation

• Gather required tools and parts.
• Ensure the vehicle is parked on a level surface and the ignition is off.
• Disconnect the vehicle's 12V battery to avoid electrical shorts.

2. Inspect Wiring and Connectors

• Sub-steps:
  • Remove any protective covers to access the wiring harness connected to the BCM.
  • Use a multimeter to check for continuity in the wiring.
  • Re-seat all connectors and ensure they are free of dirt and corrosion.
• Tools Required: Multimeter, socket set, screwdriver set.

3. Check Body Control Module (BCM)

• Sub-steps:
  • Locate the BCM, typically found under the dashboard or near the driver's side footwell.
  • Disconnect the BCM from its connectors and inspect for any signs of damage.
  • If needed, replace the BCM with a compatible unit (ensure it's programmed for the vehicle).
• Parts Required: Replacement BCM (if applicable).

4. Update Software

• Sub-steps:
  • Connect the vehicle to Wi-Fi.
  • Navigate to the software update section on the touchscreen and check for available updates.
  • Install any updates and follow the on-screen instructions.

5. Reassemble and Test

• Sub-steps:
  • Reconnect any disconnected wiring harnesses and ensure all connectors are secure.
  • Reconnect the 12V battery and turn on the vehicle.
  • Clear any fault codes using the OBD-II scanner and perform a test drive to verify functionality.
• Safety Warnings: Ensure the vehicle is in "Park" before starting the ignition.