my Tesla Model S Plaid/Refresh (2021-present) key fob is not working, what should I do?

Tesla Model S Plaid/Refresh (2021-present)

Error Codes

30 minutes to 1 hour

Time

medium

Difficulty

high

Severity

3 min read

420 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 diagnose and fix a non-working key fob for Tesla Model S Plaid. Step-by-step guide with symptoms, 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 components to prevent loss or damage.

Symptoms

•Key fob not recognized by the vehicle
•Unable to unlock or lock the doors remotely
•Vehicle does not start when key fob is present
•No response from key fob buttons when pressed
•Indicator lights on the key fob not illuminating

Diagnostic Steps

1
Replace the key fob battery and test if the issue persists.
2
Check for any physical damage or water ingress on the key fob.
3
Attempt to use the Tesla app to unlock and start the vehicle.
4
Try resetting the key fob by following the manufacturer’s instructions.
5
Scan the vehicle for any error codes related to the keyless entry system.
6
Ensure that the vehicle software is updated to the latest version.

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
•Tesla mobile app

Parts Required

•CR2032 battery

Related Faults

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Diagnostic Steps

1
Replace the key fob battery and test if the issue persists.
2
Check for any physical damage or water ingress on the key fob.
3
Attempt to use the Tesla app to unlock and start the vehicle.
4
Try resetting the key fob by following the manufacturer’s instructions.
5
Scan the vehicle for any error codes related to the keyless entry system.
6
Ensure that the vehicle software is updated to the latest version.

Solution

1. Battery Replacement

Tools Required: Small Phillips screwdriver, replacement battery (CR2032).
Open the key fob using the small Phillips screwdriver to remove the back cover.
Replace the old battery with a new CR2032 battery, ensuring correct polarity.
Reassemble the key fob and test functionality.

2. Reprogram Key Fob

Tools Required: Tesla mobile app.
Open the Tesla mobile app and navigate to the 'Controls' section.
Select 'Key Fob' and follow the prompts to add or reprogram the key fob.
Ensure the key fob is within range (inside the vehicle) during this process.

3. Reset Key Fob

Tools Required: None.
Place the key fob against the center console of the vehicle.
Hold the key fob there for 30 seconds to allow the vehicle to recognize it.
Test the key fob functionality afterward.