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Home/Cars/Tesla/Model S/Plaid/Refresh (2021-present)/how to fix Tesla Model S Original (2012-2020) door lock problems

how to fix Tesla Model S Original (2012-2020) door lock problems

Tesla Model S Plaid/Refresh (2021-present)

Severity: mediumDifficulty: medium2-4 hours
3 min read
525 words

Problem Statement

Learn how to diagnose and fix door lock problems in Tesla Model S (2012-2020). Step-by-step guide with symptoms, diagnostic steps, and repair instructions.

Component
Electrical
Repair Time
2-4 hours

Safety Warnings

  • ⚠Disconnect battery before working on electrical systems.
  • ⚠Allow the vehicle to sit for a few minutes after disconnecting the battery to ensure power is discharged.

Symptoms

  • •Door locks do not respond to key fob commands
  • •Locks fail to engage or disengage when using the touchscreen
  • •Manual lock operation is ineffective
  • •Door lock warning message displayed on the dashboard
  • •Inconsistent locking or unlocking behavior
  • •No sound or movement from the lock actuator when attempting to operate locks

Diagnostic Steps

  1. 1Inspect the key fob battery and replace if necessary.
  2. 2Check for error codes using the Tesla service mode or an OBD-II scanner.
  3. 3Verify connectivity of the door lock actuator by removing the door panel and checking wiring.
  4. 4Test the lock mechanism manually to ensure it is not jammed or obstructed.
  5. 5Inspect the vehicle's software version and update if necessary.
  6. 6Examine the door lock relays and fuses in the fuse box for faults.

Solution

Solution

1. Preparation

  • Gather necessary tools and parts.
  • Ensure the vehicle is parked in a safe, well-lit area.
  • Disconnect the negative terminal of the 12V battery to prevent electrical shorts.

2. Remove Door Panel

  • Use a trim removal tool to gently pry the door panel away from the door frame.
  • Unscrew any screws securing the door panel (usually located near the handle and bottom of the panel).
  • Carefully disconnect any electrical connectors for window switches and speakers.

3. Inspect and Replace Lock Actuator

  • Locate the door lock actuator within the door assembly.
  • If the actuator appears damaged or fails to operate, remove the screws securing it.
  • Disconnect the wiring harness from the actuator.
  • Install the new actuator by reversing the removal steps, ensuring it is properly aligned and secured.

4. Reassemble Door Panel

  • Reconnect any electrical connectors for window switches and speakers.
  • Align the door panel back onto the door frame and press firmly to snap it into place.
  • Reinstall any screws removed earlier.

5. Reconnect Battery and Test

  • Reconnect the negative terminal of the 12V battery.
  • Test the door locks using the key fob, touchscreen, and manually to ensure proper operation.

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

  • Trim removal tool
  • Screwdriver set (Phillips and flathead)
  • Socket set
  • Multimeter

Parts Required

  • Door lock actuator (if replacement is needed)
  • Key fob battery (if applicable)

Additional Information

Component

Electrical

Repair Time

2-4 hours

Difficulty

medium

Severity

medium

Tools

4 items

Parts

2 items

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