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

Tesla Model S Plaid/Refresh (2021-present)

Error Codes

30 minutes to 1 hour

Time

medium

Difficulty

medium

Severity

3 min read

505 words

Problem Statement

Learn how to troubleshoot and fix key fob issues for Tesla Model S (2012-2020). Step-by-step guide with diagnostic steps and repair instructions.

Affected Component

Electrical

Estimated Time

30 minutes to 1 hour

⚠️ Safety Warnings

Important safety information - read before proceeding

•Be cautious when handling small batteries; dispose of the old battery properly to avoid environmental harm.

Symptoms

•Key fob unresponsive to unlock commands
•No lights or sounds indicating the fob is being recognized
•Manual door handle not responding when approached
•The vehicle does not recognize the key fob when inside
•Possible 'key not detected' message on the display

Diagnostic Steps

1
Check the battery level of the key fob and replace it if necessary.
2
Attempt to unlock the vehicle using the Tesla mobile app to determine if the issue is with the fob or the vehicle.
3
Inspect the key fob for physical damage or water exposure.
4
Use the key card to unlock the vehicle as an alternative method.
5
Check for any software updates available for the vehicle through the Tesla interface.
6
Perform a reset of the vehicle's main display by holding down the two scroll wheels on the steering wheel until the screen reboots.

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 flathead screwdriver
•Coin

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
Attempt to unlock the vehicle using the Tesla mobile app to determine if the issue is with the fob or the vehicle.
3
Inspect the key fob for physical damage or water exposure.
4
Use the key card to unlock the vehicle as an alternative method.
5
Check for any software updates available for the vehicle through the Tesla interface.
6
Perform a reset of the vehicle's main display by holding down the two scroll wheels on the steering wheel until the screen reboots.

Solution

1. Battery Replacement

Tools Required: Small flathead screwdriver or coin
Instructions:
1. Use the flathead screwdriver or coin to gently pry open the key fob case.
2. Remove the old battery and insert a new CR2032 battery, ensuring the positive side is facing up.
3. Snap the key fob case back together securely.

2. Software Reset

Instructions:
1. Sit inside the vehicle with the key fob present.
2. Hold down the two scroll wheels on the steering wheel simultaneously until the display reboots.
3. Wait for the system to fully restart and test the key fob functionality.

3. Check Key Fob Settings

Instructions:
1. Go to the vehicle's settings via the touchscreen.
2. Navigate to "Locks" and ensure the key fob is listed.
3. If not listed, follow the instructions to pair the key fob again by selecting "Add Key Fob."

4. Check for Interference

Instructions:
1. Move away from other electronic devices or vehicles to rule out any signal interference.
2. Test the key fob again to see if proximity affects functionality.

5. Contact Tesla Support

If issues persist, contact Tesla service for further diagnostics or potential hardware issues with the vehicle's keyless entry system.