my Tesla Model 3 Original (2017-2023) has a dead key fob, how to reprogram it?

Tesla Model 3 Highland (2024-present)

Error Codes

30 minutes

Time

medium

Difficulty

medium

Severity

3 min read

407 words

Problem Statement

Learn how to reprogram a dead key fob for Tesla Model 3 (2017-2023). Step-by-step guide with symptoms, diagnostic steps, and repair instructions.

Affected Component

Electrical

Estimated Time

30 minutes

⚠️ Safety Warnings

Important safety information - read before proceeding

•Ensure the vehicle is in Park before proceeding.

Symptoms

•Key fob does not unlock or lock the doors
•Key fob does not start the vehicle
•No response from key fob when buttons are pressed
•LED indicator on the key fob does not illuminate

Diagnostic Steps

1
Check the battery level of the key fob and replace if necessary.
2
Ensure the key fob is within range of the vehicle.
3
Verify that the vehicle's software is up to date via the touchscreen.
4
Check for any error messages on the vehicle display related to key fob recognition.

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

•Flathead screwdriver
•New key fob battery (CR2032)

Parts Required

•CR2032 key fob battery

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Solution

1. Preparation

Tools Required:
- Flathead screwdriver (if needed to open the key fob)
- New key fob battery (CR2032)
Safety Warnings:
- Ensure the vehicle is in Park before proceeding.

2. Replace Key Fob Battery

Open the key fob using a flathead screwdriver to gently pry apart the two halves.
Remove the old battery and insert a new CR2032 battery with the positive side facing up.
Reassemble the key fob securely.

3. Reprogram the Key Fob

Using the Tesla Touchscreen:
1. Sit in the driver's seat with all doors closed.
2. Tap "Controls" on the touchscreen.
3. Select "Locks."
4. Choose "Add Key" and follow the prompts to place the key fob next to the center console.
5. Press any button on the key fob to complete the pairing process.

4. Test the Key Fob

After programming, test the key fob by pressing the lock and unlock buttons to ensure proper functionality.