my Tesla Model S Plaid/Refresh (2021-present) key fob not working what's wrong

Tesla Model S Plaid/Refresh (2021-present)

Error Codes

30 minutes

Time

medium

Difficulty

medium

Severity

3 min read

404 words

Problem Statement

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

Affected Component

Electrical

Estimated Time

30 minutes

⚠️ Safety Warnings

Important safety information - read before proceeding

•Ensure the vehicle is in 'Park' and powered off before performing any repairs.

Symptoms

•Key fob fails to lock or unlock the vehicle
•Key fob not detected by the car
•Battery indicator light on the key fob not illuminating
•Inconsistent operation (works intermittently)
•Tesla app shows 'Key not found' error

Diagnostic Steps

1
Check the battery level of the key fob using a multimeter.
2
Inspect the key fob for physical damage, such as cracks or water exposure.
3
Attempt to reprogram the key fob through the Tesla app or vehicle settings.
4
Test the key fob's signal by using it in close proximity to the vehicle.
5
Check for software updates for the vehicle that may affect key fob functionality.

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

•Plastic trim tool
•Multimeter

Parts Required

•CR2032 or CR2450 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 using a multimeter.
2
Inspect the key fob for physical damage, such as cracks or water exposure.
3
Attempt to reprogram the key fob through the Tesla app or vehicle settings.
4
Test the key fob's signal by using it in close proximity to the vehicle.
5
Check for software updates for the vehicle that may affect key fob functionality.

Solution

1. Battery Replacement

Open the Key Fob: Carefully pry open the key fob using a plastic trim tool to avoid scratches.
Remove the Old Battery: Take note of the battery orientation and remove the old battery (usually a CR2032 or CR2450).
Install New Battery: Insert a new battery into the key fob, ensuring it is oriented correctly.
Reassemble the Key Fob: Snap the key fob back together securely.

2. Reprogram Key Fob

Access Vehicle Settings: Enter the vehicle and tap on 'Controls' on the touchscreen.
Navigate to Key Fob Settings: Select 'Locks' and then 'Key Fob'.
Pair Key Fob: Follow on-screen instructions to pair the key fob with the vehicle.
Test Functionality: After pairing, test the key fob to ensure it is functioning correctly.