my Tesla Model S Original (2012-2020) key fob not working how to reprogram it

Tesla Model S Plaid/Refresh (2021-present)

Error Codes

30 minutes

Time

medium

Difficulty

medium

Severity

3 min read

463 words

Problem Statement

Learn how to reprogram your Tesla Model S key fob (2012-2020) with step-by-step instructions. Troubleshoot common issues and restore functionality.

Affected Component

Electrical

Estimated Time

30 minutes

⚠️ Safety Warnings

Important safety information - read before proceeding

•Ensure the vehicle is in a safe location while performing these steps.

Symptoms

•Key fob not recognized by the vehicle
•Vehicle does not unlock or lock with the key fob
•Inability to start the vehicle using the key fob
•Indicator lights on the fob not illuminating when buttons are pressed
•No response from the car when the fob is near

Diagnostic Steps

1
Check the battery level of the key fob by replacing it with a new CR2032 battery.
2
Ensure that the key fob is within range of the vehicle (about 1-3 feet).
3
Inspect the key fob for physical damage or water exposure.
4
Attempt to unlock the vehicle using the Tesla mobile app to verify the vehicle's operational status.
5
Verify that the vehicle's firmware is up to date by checking the settings in the touchscreen display.

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

•New CR2032 battery
•Tesla mobile app
•Smartphone

Parts Required

•CR2032 battery

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Diagnostic Steps

1
Check the battery level of the key fob by replacing it with a new CR2032 battery.
2
Ensure that the key fob is within range of the vehicle (about 1-3 feet).
3
Inspect the key fob for physical damage or water exposure.
4
Attempt to unlock the vehicle using the Tesla mobile app to verify the vehicle's operational status.
5
Verify that the vehicle's firmware is up to date by checking the settings in the touchscreen display.

Solution

1. Preparation

Tools Required: New CR2032 battery (if needed), Tesla mobile app, smartphone.
Ensure the vehicle is parked in a safe area with no obstructions.

2. Replace Key Fob Battery

Sub-steps:
1. Open the key fob by using a small flat tool to separate the two halves.
2. Carefully remove the old battery and replace it with a new CR2032 battery, ensuring correct polarity (+ side facing up).
3. Reassemble the key fob securely.

3. Reprogram Key Fob

Sub-steps:
1. Sit inside the vehicle with the new battery installed key fob.
2. On the Tesla touchscreen, navigate to Controls > Locks.
3. Select Add Key Fob.
4. Follow the on-screen instructions, which typically include pressing the key fob against the center console near the cup holders.
5. Wait for confirmation on the touchscreen that the key fob has been added successfully.
6. Test the key fob by locking and unlocking the doors to ensure functionality.