how to fix my Tesla Model S Original (2012-2020) key fob that won't unlock the doors?

Tesla Model S Plaid/Refresh (2021-present)

Error Codes

30 minutes

Time

medium

Difficulty

medium

Severity

3 min read

513 words

Problem Statement

Learn how to fix your Tesla Model S key fob that won't unlock the doors. Step-by-step guide with diagnostic steps and battery replacement instructions.

Affected Component

Electrical

Estimated Time

30 minutes

⚠️ Safety Warnings

Important safety information - read before proceeding

•Ensure your hands are clean and dry when handling electronic components.

Symptoms

•Key fob unresponsive when pressing unlock button
•Vehicle does not respond to key fob proximity
•Key fob indicator light not illuminating
•Doors remain locked despite repeated attempts to unlock
•Possible warning message on the vehicle's display regarding key fob

Diagnostic Steps

1
Check the battery level of the key fob and replace it if necessary.
2
Inspect the key fob for physical damage or water intrusion.
3
Verify that the vehicle's software is up to date; check for any key fob-related updates.
4
Attempt to reset the key fob by removing the key fob battery and reinserting it after a few minutes.
5
Test the key fob functionality from different distances to rule out proximity issues.
6
Use the Tesla app to verify if the vehicle can be unlocked via mobile access.

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

•Small Phillips screwdriver
•Coin or flat tool for prying open the key fob
•Replacement CR2032 battery

Parts Required

•CR2032 battery

Related Faults

Share this solution

Comments

No comments yet

Be the first to share your thoughts

Back to Generation

Diagnostic Steps

1
Check the battery level of the key fob and replace it if necessary.
2
Inspect the key fob for physical damage or water intrusion.
3
Verify that the vehicle's software is up to date; check for any key fob-related updates.
4
Attempt to reset the key fob by removing the key fob battery and reinserting it after a few minutes.
5
Test the key fob functionality from different distances to rule out proximity issues.
6
Use the Tesla app to verify if the vehicle can be unlocked via mobile access.

Solution

1. Preparation

Tools Required: Small Phillips screwdriver, coin or flat tool for prying open the key fob, replacement CR2032 battery.
Safety Warnings: None specific for this procedure, but ensure your hands are dry and clean to avoid any damage to the fob.

2. Replace Key Fob Battery

Open Key Fob: Use a coin or flat tool to gently pry open the key fob casing at the seam. Be careful not to damage the plastic.
Remove Old Battery: Once open, locate the CR2032 battery. Note the orientation (positive side facing up) before removing it.
Insert New Battery: Place the new CR2032 battery in the same orientation as the old one. Ensure it is seated properly in the battery compartment.
Reassemble Key Fob: Snap the key fob casing back together until it clicks securely. Ensure there are no gaps indicating it is not fully closed.

3. Reprogram Key Fob (if necessary)

Enter Vehicle: Sit inside the vehicle and close all doors.
Access Settings: On the touchscreen, navigate to 'Controls' > 'Locks'.
Add Key Fob: Follow the prompts to add the key fob if it was not automatically recognized after the battery replacement.
Test Functionality: Once added, test the key fob by pressing the unlock button to see if the vehicle responds.