my Tesla Model S Plaid won't unlock with the key fob what to do

Tesla Model S Plaid/Refresh (2021-present)

Error Codes

1 hour

Time

medium

Difficulty

medium

Severity

3 min read

501 words

Problem Statement

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

Affected Component

Electrical

Estimated Time

1 hour

⚠️ Safety Warnings

Important safety information - read before proceeding

•Ensure the vehicle is in a safe location before performing any maintenance on the key fob.

Symptoms

•Key fob does not unlock the doors when pressed
•Key fob indicator light does not illuminate when buttons are pressed
•Vehicle may unlock using the mobile app
•Doors may unlock manually from inside the vehicle
•No response from the key fob at any distance

Diagnostic Steps

1
Check the key fob battery level using a multimeter or by replacing it with a new battery.
2
Verify if the key fob is synchronized with the vehicle by attempting to use the mobile app for unlocking.
3
Inspect the vehicle's door sensors for any visible obstructions or damage.
4
Perform a reset of the vehicle's main computer by powering off the vehicle through the touchscreen and waiting for a few minutes.
5
Check for any software updates for the vehicle that may address key fob issues.
6
Test another key fob if available to determine if the issue is with the fob or the vehicle.

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

•Multimeter
•Small flathead screwdriver

Parts Required

•CR2032 key fob battery

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Diagnostic Steps

1
Check the key fob battery level using a multimeter or by replacing it with a new battery.
2
Verify if the key fob is synchronized with the vehicle by attempting to use the mobile app for unlocking.
3
Inspect the vehicle's door sensors for any visible obstructions or damage.
4
Perform a reset of the vehicle's main computer by powering off the vehicle through the touchscreen and waiting for a few minutes.
5
Check for any software updates for the vehicle that may address key fob issues.
6
Test another key fob if available to determine if the issue is with the fob or the vehicle.

Solution

1. Preparation

Gather necessary tools: small flathead screwdriver, new key fob battery (CR2032), and multimeter.
Ensure the vehicle is parked in a safe location with sufficient battery charge.

2. Replace Key Fob Battery

Use the small flathead screwdriver to gently pry open the key fob.
Remove the old battery and insert the new CR2032 battery, ensuring correct polarity.
Reassemble the key fob securely.

3. Re-sync the Key Fob

Inside the vehicle, go to the settings menu on the touchscreen.
Navigate to "Locks" and select "Key Fob."
Follow the prompts to add or re-sync the key fob, ensuring it is close to the vehicle during the process.

4. Reset Vehicle Computer

Touch the car icon on the bottom left of the touchscreen.
Select "Safety & Security."
Choose "Power Off" and confirm.
Wait for at least 2 minutes before pressing the brake pedal to power the vehicle back on.

5. Update Software

Check for updates by navigating to "Software" on the touchscreen.
If an update is available, follow the prompts to install it.