2020 Tesla Model 3 Key Fob Programming Guide

Quick reference

Step-by-step on-board programming

Good news! Programming a new key fob for your 2020 Tesla Model 3 is a straightforward process that you can do yourself right from the touchscreen in your vehicle. You'll need an authenticated key or key card already paired with the vehicle to initiate the process.

1. Enter the vehicle: Get into your Tesla Model 3.
2. Access the "Locks" menu: On the touchscreen, touch Controls > Locks.
3. Add a new key: Touch the + icon next to "Keys".
4. Place the new key fob: When prompted, place the new key fob on the center console's card reader. This is typically just behind the cup holders.
5. Place an authenticated key or key card: Next, place an existing, authenticated key card or key fob onto the card reader.
6. Confirmation: Once recognized, the touchscreen will display a message confirming the successful pairing of the new key fob.
7. Test the new key fob: Always test the newly programmed key fob to ensure it locks, unlocks, and starts the vehicle correctly.

Battery replacement

The Tesla Model 3 key fob uses a CR2032 coin cell battery. When the battery is low, your vehicle will display a message on the touchscreen.

1. Locate the seam: The key fob has a seam running along its edge.
2. Pry open the fob: Using a small flat-head screwdriver or a fingernail, carefully pry open the two halves of the key fob at the seam. Start from the bottom portion where the key ring usually attaches.
3. Remove the old battery: Gently remove the old CR2032 battery.
4. Insert the new battery: Insert a new CR2032 battery with the positive (+) side facing up (visible).
5. Snap the halves back together: Carefully align the two halves of the key fob and snap them back together until you hear a click.

Where to buy a replacement fob

When it comes to Tesla, your options for replacement key fobs are a bit different from traditional car manufacturers.

• Tesla Service Center: This is the most reliable place to get an OEM key fob. They will be able to provide you with the correct part and can assist with programming if you encounter any issues. Expect to pay anywhere from $150-$200 for the fob itself. While on-board programming is available, some owners prefer the peace of mind of having Tesla take care of it.
• Aftermarket/Online Retailers: Currently, high-quality aftermarket key fobs that offer full functionality for the Model 3 are scarce. Be wary of generic key fobs advertised online, as they may not fully integrate with the Tesla system or offer the same level of security and features. It's best to stick to genuine Tesla parts for now.
• Locksmiths: While many locksmiths are experts in key fob programming for other brands, specialized Tesla knowledge and equipment might be less common. Always call ahead and inquire if they specifically handle Tesla key fob programming.

If on-board programming isn't supported

For the 2020 Tesla Model 3, on-board programming is supported and is the standard method for pairing new key fobs. There is no traditional "immobilizer transponder" chip in the same way conventional cars have them, as Tesla uses a more advanced integrated security system that relies on the key fobs and key cards communicating directly with the vehicle's onboard computers.

If, for some reason, you were unable to program the key fob yourself (perhaps due to a faulty fob or an issue with your vehicle's system), seeking assistance from a Tesla Service Center would be your next step. They have the proprietary diagnostic tools to address any complex issues and ensure your new key fob is correctly registered with your vehicle. The cost for their service would depend on the diagnosis and the work involved, but generally, a service appointment could range from $100-$200 in labor if programming is the only issue.

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