why are my Tesla Model S Original (2012-2020) power locks not working

Tesla Model S Plaid/Refresh (2021-present)

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

3 min read

496 words

Problem Statement

Learn how to diagnose and fix power locks not working on Tesla Model S (2012-2020). Step-by-step guide with diagnostic procedures and repair instructions.

Affected Component

Electrical

Estimated Time

2-4 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the battery before working on electrical components to avoid shock or short-circuiting.

Symptoms

•Power lock buttons are unresponsive on the key fob and inside the vehicle.
•Door locks do not respond when using the touchscreen controls.
•Audible clicking sound from door lock actuators when attempting to lock/unlock.
•Driver door lock may operate inconsistently (sometimes works, sometimes does not).
•Error message regarding the locking system may appear on the touchscreen.

Diagnostic Steps

1
Inspect the key fob battery and replace if necessary.
2
Scan the vehicle's system for fault codes using an OBD-II scanner or Tesla diagnostic tool.
3
Check for any software updates available for the vehicle through the Tesla app or touchscreen.
4
Visually inspect the door lock actuators for signs of damage or disconnection.
5
Test the power supply to the door lock actuators using a multimeter.
6
Inspect wiring harnesses for fraying or disconnection, especially at the door hinges.

Solution

💡 Expert Tip

For complex repairs like this, consider taking photos at each step. This helps if you need to reverse a step or consult with a mechanic. Also, keep all removed parts organized - you may need to reference them during reassembly.

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
•Socket set
•Screwdriver set

Parts Required

•CR2032 key fob battery
•Door lock actuator (if replacement is necessary)

Related Faults

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Symptoms

•Power lock buttons are unresponsive on the key fob and inside the vehicle.

•Door locks do not respond when using the touchscreen controls.

•Audible clicking sound from door lock actuators when attempting to lock/unlock.

•Driver door lock may operate inconsistently (sometimes works, sometimes does not).

•Error message regarding the locking system may appear on the touchscreen.

Diagnostic Steps

1
Inspect the key fob battery and replace if necessary.
2
Scan the vehicle's system for fault codes using an OBD-II scanner or Tesla diagnostic tool.
3
Check for any software updates available for the vehicle through the Tesla app or touchscreen.
4
Visually inspect the door lock actuators for signs of damage or disconnection.
5
Test the power supply to the door lock actuators using a multimeter.
6
Inspect wiring harnesses for fraying or disconnection, especially at the door hinges.

Solution

1. Preparation

Gather tools and parts.
Disconnect the vehicle battery to prevent electrical shorts.

Tools Required:

OBD-II scanner
Multimeter
Socket set
Screwdriver set

2. Replace Key Fob Battery (if needed)

Open the key fob using a flathead screwdriver.
Remove the old battery and replace it with a new CR2032 battery, ensuring correct polarity.
Test key fob functionality before reassembly.

3. Update Software

Connect the vehicle to Wi-Fi.
Navigate to the "Software" section on the touchscreen.
Check for and install any available updates.

4. Inspect and Replace Door Lock Actuators (if faulty)

Remove the interior door panel using a screwdriver and trim removal tools.
Disconnect the wiring harness from the door lock actuator.
Remove the actuator (usually held by screws or clips) and replace with a new unit.
Reconnect wiring and reassemble the door panel.

5. Verify Wiring and Connections

Inspect wiring for any visible damage; repair or replace as necessary.
Ensure all connectors are secure and free of corrosion.