how to fix the error code B101D in Tesla Model S Original (2012-2020)

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the vehicle's 12V battery to avoid accidental deployment of the airbag.
• Allow at least 10 minutes after disconnecting the battery to ensure capacitors discharge.

2. Inspect and Repair Wiring

• Tools Required: Wire strippers, electrical tape, heat shrink tubing, multimeter.
• Instructions:
  1. Locate the driver's side airbag harness under the steering wheel.
  2. Remove any covering or panels to access the wiring.
  3. Inspect the wiring for frayed or damaged sections.
  4. Repair any damaged wires using wire connectors or soldering.
  5. Use electrical tape or heat shrink tubing to insulate repaired sections.

3. Replace Airbag Module (if necessary)

• Tools Required: Socket set, torque wrench.
• Instructions:
  1. If the airbag module appears faulty, unclip the connectors and remove the module.
  2. Install the new airbag module and ensure all connectors are securely attached.
  3. Torque the mounting bolts to the manufacturer’s specifications (typically around 12-15 Nm).
  4. Reconnect the battery and ensure all system checks are cleared.

4. Final Checks

• Clear any error codes using a diagnostic tool.
• Reconnect the 12V battery.
• Test the airbag system functionality through a diagnostic check.