my Tesla Model S Plaid/Refresh (2021-present) key fob not working how to troubleshoot

Tesla Model S Plaid/Refresh (2021-present)

Error Codes

0.5 hours

Time

easy

Difficulty

medium

Severity

3 min read

452 words

Problem Statement

Learn how to troubleshoot and fix a non-working key fob for Tesla Model S Plaid/Refresh. Step-by-step guide with diagnostic steps and solutions.

Affected Component

Electrical

Estimated Time

0.5 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•None applicable for key fob replacement.
•Test the key fob by pressing the unlock button to see if the vehicle responds.
•Check the LED light on the key fob to confirm it is functioning.
•Attempt to start the vehicle using the key fob.
•Monitor for any error messages on the vehicle display regarding key fob recognition.
•Regularly check and replace the key fob battery every 1-2 years.
•Avoid exposing the key fob to extreme temperatures or moisture.
•Keep the key fob away from electronic devices that may cause interference.

Symptoms

•Key fob not responding when used to unlock or start the vehicle
•No LED light flashing on the key fob when buttons are pressed
•Vehicle does not recognize key fob when near the door handle
•Inability to use the app to access the vehicle
•Low battery warning displayed on the vehicle

Diagnostic Steps

1
Check the battery level of the key fob.
2
Replace the key fob battery with a new one.
3
Attempt to reconnect the key fob to the vehicle via the touchscreen settings.
4
Inspect the key fob for any physical damage or wear.
5
Test the key fob in close proximity to the vehicle to ensure it is within range.
6
Verify if multiple key fobs are affected or just one.

Solution

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 flathead screwdriver
•New CR2032 battery

Parts Required

•CR2032 battery

Related Faults

Share this solution

Comments

No comments yet

Be the first to share your thoughts

Back to Generation

Diagnostic Steps

1
Check the battery level of the key fob.
2
Replace the key fob battery with a new one.
3
Attempt to reconnect the key fob to the vehicle via the touchscreen settings.
4
Inspect the key fob for any physical damage or wear.
5
Test the key fob in close proximity to the vehicle to ensure it is within range.
6
Verify if multiple key fobs are affected or just one.

Solution

1. Preparation

Tools Required:
- Small flathead screwdriver
- New CR2032 battery (or specific battery type for your fob)
Safety Warnings:
- None applicable for key fob replacement.

2. Replace Key Fob Battery

Use the small flathead screwdriver to gently pry open the key fob casing along the seam.
Remove the old battery carefully, noting the orientation of the positive and negative sides.
Insert the new CR2032 battery (or specific type) in the same orientation as the old battery.
Snap the key fob casing back together until it clicks securely.

3. Reconnect Key Fob to Vehicle

Enter the vehicle using the mobile app or the physical key card.
On the touchscreen, go to "Controls" > "Locks" > "Key Fob."
Follow the prompts to add or re-establish the connection with the key fob.
Confirm that the key fob is recognized by the vehicle.