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Home/Cars/Tesla/Model S/Plaid/Refresh (2021-present)/how to fix B101D code in Tesla Model S Plaid/Refresh (2021-present)

how to fix B101D code in Tesla Model S Plaid/Refresh (2021-present)

Tesla Model S Plaid/Refresh (2021-present)

Error Codes
Severity: highDifficulty: mediumError Code: B101D2-4 hours
3 min read
513 words

⚠️ Safety Warning

This issue requires immediate attention. If you are not experienced with automotive repairs, consult a professional mechanic. Working on critical systems can be dangerous.

Problem Statement

Learn how to diagnose and fix B101D electrical issues in Tesla Model S Plaid. Step-by-step guide with diagnostic procedures and repair instructions.

Error Code
B101D
Component
Electrical
Repair Time
2-4 hours

Safety Warnings

  • ⚠Disconnect the battery before working on electrical components to prevent short circuits or electric shock.

Symptoms

  • •Security alarm may trigger unexpectedly
  • •Difficulty locking or unlocking doors
  • •Doors may not respond to key fob commands
  • •Warning messages on the dashboard related to door locks
  • •Inconsistent operation of the trunk or frunk release

Diagnostic Steps

  1. 1Scan the vehicle's onboard systems using the Tesla service tool to confirm the B101D code is present.
  2. 2Inspect the door latch assemblies visually for any signs of damage or wear.
  3. 3Check the wiring harnesses and connectors related to the body control module for loose connections or corrosion.
  4. 4Verify the operation of the key fob and try reprogramming or replacing its battery.
  5. 5Review related error codes that may indicate additional issues with the body control module or other components.

Solution

Solution

1. Preparation

  • Gather tools: OBD-II scanner, multimeter, Torx screwdriver set, and safety gloves.
  • Disconnect the vehicle's 12V battery to ensure safety during repairs.

2. Inspect and Repair Wiring

  • Sub-step 1: Remove the inner door panel using the Torx screwdriver to access the wiring harness.
  • Sub-step 2: Inspect the wiring for any frays, breaks, or corrosion, particularly at the connectors.
  • Sub-step 3: If damage is found, repair the wiring using appropriate techniques (soldering or heat-shrink connectors).

3. Replace the Door Latch

  • Sub-step 1: If the latch is damaged, remove it from the door by unscrewing the retaining screws.
  • Sub-step 2: Disconnect the wiring harness from the latch and remove the old latch assembly.
  • Sub-step 3: Install the new door latch by connecting the wiring harness and securing it with screws.

4. Reconnect Battery and Test

  • Sub-step 1: Reconnect the 12V battery.
  • Sub-step 2: Use the OBD-II scanner to clear the B101D code and any other related codes.
  • Sub-step 3: Test the locking and unlocking functions of the doors and trunk.

5. Final Assembly

  • Sub-step 1: Reinstall the inner door panel.
  • Sub-step 2: Ensure all screws and clips are secured properly.

Verification

After completing the repair, verify that the issue has been resolved:

  • Test the affected component to ensure it functions correctly
  • Check for any error codes or warning lights
  • Monitor the vehicle for a few days to ensure the issue does not recur

Prevention Tips

To prevent this issue from occurring again:

  • •Follow the manufacturer's recommended maintenance schedule
  • •Address warning signs early before they develop into major issues
  • •Use quality parts and fluids recommended for your vehicle
  • •Keep detailed records of all repairs and maintenance

Tools & Equipment Required

  • OBD-II scanner
  • Multimeter
  • Torx screwdriver set
  • Safety gloves

Parts Required

  • New door latch assembly (if necessary)
  • Electrical connectors (if any wiring repairs are needed)

Additional Information

Error CodeB101D
Component

Electrical

Repair Time

2-4 hours

Difficulty

medium

Severity

high

Tools

4 items

Parts

2 items

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