2023 Tesla Model 3 Key Fob Programming Guide

Quick reference

Step-by-step on-board programming

The 2023 Tesla Model 3 uses a key card, phone key, or an optional key fob for access and starting. The key fob does not require a traditional on-board programming procedure in the same way older vehicle key fobs do. Instead, you "pair" the key fob with your vehicle through its touchscreen menu.

Here's how to pair a new or replacement Tesla Model 3 key fob:

1. Ensure your vehicle is in Park (P).
2. On the touchscreen, tap "Controls" > "Locks" > "+".
3. Place your existing paired key card or key fob on the card reader located behind the cupholders (or at the base of the B-pillar on the driver's side, depending on your vehicle's build date and region). The touchscreen will confirm that the existing key has been detected.
4. Remove the existing key.
5. Place the new, unprogrammed key fob on the card reader. Hold it there for a few seconds until the touchscreen acknowledges it and asks you to confirm. You may need to press the fob's buttons to "wake it up."
6. Follow any additional prompts on the touchscreen to complete the pairing process. The new key fob should now be recognized by your Model 3.

Important: Ensure the key fob battery is fresh before attempting to pair.

Battery replacement

The Tesla Model 3 key fob uses a CR2032 coin cell battery.

1. Locate the seam on the side of the key fob.
2. Using a small flat-head screwdriver or a fingernail, gently pry open the key fob shell. Be careful not to damage the internal electronics.
3. Remove the old CR2032 battery. Note the orientation of the battery (positive (+) side up or down) for correct installation of the new battery.
4. Insert the new CR2032 battery, ensuring it's oriented correctly.
5. Carefully snap the key fob halves back together until it's securely closed.

Where to buy a replacement fob

• Tesla Service Center/Online Store: This is the most reliable place to purchase an authentic replacement key fob for your Model 3. They are guaranteed to be compatible and will function correctly. *
  • Pros: Genuine Tesla part, assured compatibility.
  • Cons: Can be more expensive than aftermarket options (though aftermarket options are very limited for Tesla). Expect to pay approximately $175 - $200 for the fob itself.
• Aftermarket Retailers (Limited): Due to the proprietary nature of Tesla's key systems, fully functional aftermarket key fobs are virtually nonexistent.
  • Pros: Potentially lower cost if they existed.
  • Cons: High risk of incompatibility or non-functionality. Not recommended for Tesla vehicles.

If on-board programming isn't supported

For the 2023 Tesla Model 3, on-board programming is supported via the touchscreen interface, as detailed above. There is no traditional "immobilizer transponder" chip to be programmed separately, as the vehicle's security system integrates directly with the paired key fob or key card.

Should you encounter issues with pairing a new key fob, or if the touchscreen procedure doesn't work, you would typically need to contact Tesla Service for diagnosis and assistance. A locksmith generally cannot program a new Tesla key fob due to the proprietary nature of Tesla's systems and the requirement for specific Tesla diagnostic tools and software.

Cost Expectations for Tesla Service: If you need assistance from Tesla Service for key fob issues that aren't covered under warranty, labor rates can vary. It's best to get a quote directly from them, but anticipate potential diagnostic fees. The cost of the fob itself remains the primary expense.

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