my Tesla Model S door locks won't unlock remotely what should I do

Tesla Model S Plaid/Refresh (2021-present)

Error Codes

1-3 hours

Time

medium

Difficulty

medium

Severity

3 min read

513 words

Problem Statement

Learn how to diagnose and fix remote unlock issues on Tesla Model S. Step-by-step guide with symptoms, diagnostic steps, and repair instructions.

Affected Component

Electrical

Estimated Time

1-3 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the 12V battery before working on electronic components to prevent electrical shock or damage.

Symptoms

•Remote key fob does not unlock doors
•Door locks do not respond to mobile app commands
•Audible click but no movement from door locks
•Manual unlocking works without issue
•Key fob battery is functional (if checked)

Diagnostic Steps

1
Check the battery level of the key fob and replace if necessary.
2
Verify the Tesla software version and ensure it is up to date.
3
Test the remote unlock feature using another key fob if available.
4
Inspect the vehicle's wireless connectivity and ensure there are no obstructions.
5
Use the Tesla mobile app to attempt unlocking the doors.
6
Perform a hard reset of the vehicle's touchscreen.

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

•Flathead screwdriver
•Phillips screwdriver
•Multimeter

Parts Required

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

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Diagnostic Steps

1
Check the battery level of the key fob and replace if necessary.
2
Verify the Tesla software version and ensure it is up to date.
3
Test the remote unlock feature using another key fob if available.
4
Inspect the vehicle's wireless connectivity and ensure there are no obstructions.
5
Use the Tesla mobile app to attempt unlocking the doors.
6
Perform a hard reset of the vehicle's touchscreen.

Solution

1. Preparation

Gather tools: flathead screwdriver, Phillips screwdriver, and a multimeter.
Ensure the vehicle is parked in a safe location and turned off.
Disconnect the 12V battery for safety while working on electronic components.

2. Inspect Key Fob

Open the key fob using a flathead screwdriver.
Check for corrosion or damage on the battery contacts.
Measure the battery voltage with a multimeter to confirm proper operation (should be 3V for a CR2032 battery).
Replace the battery if needed and reassemble the key fob.

3. Check Door Lock Actuators

Remove the door panel using a Phillips screwdriver and flathead screwdriver to access the locking mechanism.
Inspect the wiring harness for damage or loose connections.
Test the door lock actuator with a multimeter to ensure it is receiving power when the unlock command is sent.
Replace the door lock actuator if it is faulty.

4. Reset the Vehicle

Reconnect the 12V battery to restore power.
Perform a hard reset of the vehicle by holding down both scroll wheels on the steering wheel until the Tesla logo appears.

5. Reprogram Key Fob (if necessary)

Navigate to the vehicle settings on the touchscreen.
Select "Locks" and follow the prompts to re-add the key fob to the system.