my Tesla Model S Original (2012-2020) key fob is not working what can I do

Tesla Model S Plaid/Refresh (2021-present)

Error Codes

30 minutes

Time

medium

Difficulty

high

Severity

3 min read

405 words

⚠️ Safety Warning

This issue requires immediate attention. If you are not experienced with automotive repairs, consult a professional mechanic. Working on critical systems can be dangerous.

Problem Statement

Learn how to troubleshoot and fix a non-functioning key fob for Tesla Model S (2012-2020). Step-by-step guide with diagnostic steps and solutions.

Affected Component

Electrical

Estimated Time

30 minutes

⚠️ Safety Warnings

Important safety information - read before proceeding

•Ensure the vehicle is off before working on the key fob to prevent accidental activation.

Symptoms

•Key fob not responding when buttons are pressed
•Vehicle does not unlock when approached
•Vehicle does not start or respond to key fob
•No LED light illumination on the key fob when pressed
•Possible intermittent connectivity issues

Diagnostic Steps

1
Replace the battery in the key fob and test its functionality.
2
Check for any visible damage or wear on the key fob casing.
3
Attempt to reprogram the key fob using the Tesla mobile app or vehicle settings.
4
Verify the vehicle's software version and check for updates that may affect key fob functionality.
5
Test the key fob in close proximity to the vehicle to rule out distance-related issues.

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 screwdriver
•Multimeter (optional)

Parts Required

•CR2032 battery (replacement)

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Diagnostic Steps

1
Replace the battery in the key fob and test its functionality.
2
Check for any visible damage or wear on the key fob casing.
3
Attempt to reprogram the key fob using the Tesla mobile app or vehicle settings.
4
Verify the vehicle's software version and check for updates that may affect key fob functionality.
5
Test the key fob in close proximity to the vehicle to rule out distance-related issues.

Solution

1. Preparation

Gather necessary tools: small screwdriver, replacement battery (CR2032), and possibly a multimeter for testing.
Ensure the vehicle is turned off before beginning any work on the key fob.

2. Replace Key Fob Battery

Sub-steps:
1. Use a small screwdriver to open the key fob casing.
2. Remove the old battery and dispose of it properly.
3. Insert a new CR2032 battery with the positive side facing up.
4. Reassemble the key fob casing securely.
5. Test the key fob to see if it responds.

3. Reprogram Key Fob

Sub-steps:
1. Open the Tesla mobile app and log in to your account.
2. Navigate to 'Controls' > 'Key Fob' section within the app.
3. Follow the prompts to reprogram the key fob.
4. Test the key fob functionality after reprogramming.