2023 Tesla Model S Key Fob Programming Guide

Quick reference

Step-by-step on-board programming

The 2023 Tesla Model S does not use a traditional key fob programming procedure involving ignition cycles or door button presses. Instead, all key programming is done directly through the vehicle's central touchscreen.

Here's how to program a new key for your 2023 Tesla Model S:

1. Ensure your new key is ready: Make sure your new key fob is charged or has a fresh battery (CR2032).
2. Access the Vehicle Settings: On the touchscreen, touch the "Car" icon at the bottom left.
3. Navigate to Locks: Touch "Locks" on the left-hand menu.
4. Add Key: Touch the "+ Add Key" button.
5. Follow On-Screen Prompts: The system will guide you through the process. You will be prompted to place your new key fob on the center console, in the designated area (usually in the cup holder area or near the front of the console).
6. Authenticate with Existing Key: You will likely need to use an existing, already-paired key card or key fob to authenticate the addition of the new key.
7. Confirmation: Once successfully paired, the touchscreen will confirm the addition of the new key, and it will appear in your list of active keys.

Battery replacement

The Tesla Model S key fob uses a CR2032 coin cell battery. When the battery is low, you will typically receive a notification on your vehicle's touchscreen.

To replace the battery:

1. Locate the seam: There is a small seam on the side of the key fob.
2. Pry it open: Carefully use a small, flat-head screwdriver or a plastic pry tool to gently separate the two halves of the key fob. Be gentle to avoid damaging the casing.
3. Remove the old battery: Pop out the old CR2032 battery.
4. Insert the new battery: Place the new CR2032 battery with the positive (+) side facing up.
5. Snap it shut: Carefully align the two halves of the key fob and press them together until they securely snap back into place.

Where to buy a replacement fob

Replacement Tesla Model S key fobs can be obtained from a few sources, each with its own pros and cons:

• Tesla Service Center: This is the most reliable option for ensuring a genuine, compatible key fob. However, it's typically the most expensive. Expect to pay around $175-$250 for the fob itself, with potential additional costs if a service appointment is needed for initial setup (though on-board programming usually negates this).
• Online Retailers (e.g., Amazon, eBay): You might find third-party or refurbished key fobs at a lower price. Exercise caution, as quality and compatibility can vary greatly. Always verify the FCC ID (2AEIM-1077942) and part number (1077942-00-B) to ensure you are getting the correct fob. Prices can range from $100-$200, but there's a higher risk of receiving a non-functional or unreliable product.
• Locksmith: While traditional locksmiths are excellent for many car keys, Tesla's unique system means most locksmiths are not equipped to program new Tesla keys. They typically lack the necessary diagnostic tools and software. If you find a locksmith claiming to program Tesla keys, ensure they have proven experience and the right equipment.

If on-board programming isn't supported

For the 2023 Tesla Model S, on-board programming via the touchscreen is supported, making the process straightforward for owners. There is no traditional "key blade" to cut, as the vehicle operates entirely without a physical key entry system. The vehicle uses an advanced immobilizer system integrated directly into its software, which is activated and deactivated through the paired key fobs or key cards. If for some reason you are unable to program a key yourself via the touchscreen (e.g., due to a software glitch or a problem with the vehicle's system), your only recourse would be a Tesla Service Center.

Since the Model S uses a digital key system, there is no separate transponder chip to worry about in the traditional sense. The security is handled by encrypted communication between the key and the vehicle.

Find a mobile locksmith or shop on Repairius.