how to deal with Tesla Model S Original (2012-2020) key fob not working

Tesla Model S Plaid/Refresh (2021-present)

Error Codes

30 minutes

Time

medium

Difficulty

medium

Severity

3 min read

484 words

Problem Statement

Learn how to troubleshoot and fix a non-working key fob for Tesla Model S (2012-2020). Step-by-step guide with diagnostic steps and repair instructions.

Affected Component

Electrical

Estimated Time

30 minutes

⚠️ Safety Warnings

Important safety information - read before proceeding

•Be careful when prying open the key fob to avoid damaging the casing.

Symptoms

•Key fob not recognized by the vehicle
•Unable to unlock or lock the doors remotely
•Dashboard displays 'Key not detected' message
•Key fob buttons unresponsive
•Vehicle does not start when the key fob is inside

Diagnostic Steps

1
Check the key fob battery level and replace it if necessary.
2
Attempt to manually unlock the vehicle using the physical key hidden within the fob.
3
Inspect the key fob for any visible damage or wear.
4
Reboot the vehicle's systems by holding down the brake pedal and pressing the two scroll wheels on the steering wheel.
5
Check for software updates via the vehicle's touchscreen interface.
6
Test the key fob in close proximity to the vehicle to rule out distance issues.

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 flathead screwdriver

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 key fob battery level and replace it if necessary.
2
Attempt to manually unlock the vehicle using the physical key hidden within the fob.
3
Inspect the key fob for any visible damage or wear.
4
Reboot the vehicle's systems by holding down the brake pedal and pressing the two scroll wheels on the steering wheel.
5
Check for software updates via the vehicle's touchscreen interface.
6
Test the key fob in close proximity to the vehicle to rule out distance issues.

Solution

1. Preparation

Gather necessary tools: small flathead screwdriver and a new CR2032 battery.
Ensure the vehicle is in a safe, accessible location.

2. Replace Key Fob Battery

Open the Key Fob:
- Use the small flathead screwdriver to gently pry open the key fob casing.
- Locate the seam and carefully work your way around to avoid damaging the plastic.
Remove the Old Battery:
- Take note of the orientation of the old CR2032 battery (positive side facing up).
- Carefully remove the old battery from its slot.
Install the New Battery:
- Place the new CR2032 battery in the same orientation as the old one.
- Ensure it is seated properly in the battery compartment.
Reassemble the Key Fob:
- Snap the two halves of the key fob back together until secure.
- Ensure there are no gaps between the two halves.

3. Reprogram the Key Fob (if necessary)

Enter the Vehicle:
- Use the physical key to unlock the driver's door and enter the vehicle.
Access Key Fob Settings:
- On the touchscreen, navigate to 'Controls' > 'Settings' > 'Key Fob'.
Re-add Key Fob:
- Follow the prompts to add a new key fob, ensuring the new fob is close to the center console during the process.