how to address a Tesla Model 3 Original (2017-2023) that won't unlock?

Tesla Model 3 Highland (2024-present)

Error Codes

1-2 hours

Time

medium

Difficulty

medium

Severity

3 min read

503 words

Problem Statement

Learn how to troubleshoot and fix unlocking issues in Tesla Model 3 (2017-2023). Step-by-step guide with diagnostic procedures and repair instructions.

Affected Component

Electrical

Estimated Time

1-2 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Ensure the vehicle is in a safe location before performing any procedures.

Symptoms

•Key fob does not unlock the doors
•Mobile app fails to unlock the vehicle
•Unlock button on the touchscreen is unresponsive
•No response from the door handles upon touch
•Vehicle remains locked even when in close proximity to the key fob

Diagnostic Steps

1
Check the battery level of the key fob.
2
Attempt to unlock the vehicle using the mobile app.
3
Inspect for any software updates available for the vehicle.
4
Reset the vehicle's touchscreen by holding down both scroll wheels on the steering wheel.
5
Verify that the key fob is within the proper range for unlocking.
6
Inspect for physical obstructions or damage to the door handles.

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

•Smartphone (for app access)
•Small flathead screwdriver (if needed)

Parts Required

•CR2032 battery (for key fob)

Related Faults

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Diagnostic Steps

1
Check the battery level of the key fob.
2
Attempt to unlock the vehicle using the mobile app.
3
Inspect for any software updates available for the vehicle.
4
Reset the vehicle's touchscreen by holding down both scroll wheels on the steering wheel.
5
Verify that the key fob is within the proper range for unlocking.
6
Inspect for physical obstructions or damage to the door handles.

Solution

1. Preparation

Gather necessary tools: smartphone (for app access), and a small flathead screwdriver (if needed).
Ensure the vehicle is in a safe location for testing.

2. Replace Key Fob Battery

Use a small flathead screwdriver to carefully pry open the key fob.
Remove the old battery (typically a CR2032).
Insert a new battery, ensuring the positive (+) side is facing up.
Snap the key fob back together.

3. Update Vehicle Software

Go to the vehicle settings on the touchscreen.
Navigate to "Software" and check for any available updates.
If an update is available, follow the on-screen instructions to initiate the update process.
Ensure the vehicle is connected to Wi-Fi during the update.

4. Reset Touchscreen

With the vehicle in park, press and hold both scroll wheels on the steering wheel until the touchscreen turns off and the Tesla logo appears.
Release the scroll wheels and allow the system to reboot.
Test the unlocking functionality after the reboot.

5. Check Door Handle Functionality

Inspect the door handles for any visible damage or obstruction.
If handles are not extending when touched, manually pull the handle to see if it engages.
If there is physical obstruction, remove it and test again.