Some Teslas like the Model 3 or the Model Y don't come with a key fob. Instead, you get a key card that can be paired with your smartphone, so you can use it as your car key.
The key fob is proximity based. The car unlocks as you get closer, and it also has the ability of unlocking as you walk out (you can deactivate this if you prefer it).
Key fobs and key rings are available to be purchased separately if you prefer not to use your smartphone's Phone Key features. In case you need to purchase a Key replacement for your Tesla, you can order them at the Tesla Shop or at a Service Center.
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Blog posts related to Key fob
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It seems like the actual key fob also uses Bluetooth since September 2016 (see Electrek’s post about this), so I assume both the S and the X have the appropriate antennas to power using the phone as the key.
Read more: TwitterFrom issue #7
Apple just announced a couple of interesting features for EV cars at the WWDC20, good to see Apple moving in this direction. The first one is support for EV routing in Apple Maps. The second one is Car Key, which will allow to wirelessly unlock your car with your iPhone and iWatch. The feature is part of the newly revealed iOS 14 and it will work over NFC. The advantage is that it would allow NFC car unlock up to 5 hours after your phone battery dies. Great backup to using Bluetooth as a primary key. No news about if Tesla is going to integrate with it or not, since they have their own system to use as your Tesla Key.
Read more: The VergeFrom issue #117
Dissolved a spare M3 key card in acetone and put its RFID chip and antenna in a small, generic key fob
Have you ever wanted to have a key fob instead of the key card for your Model 3? This Tesla owner transformed his key for about $10 (excluding the key cards).
Read more: RedditFrom issue #64
[Nerd post alert] Have you ever asked yourself how the NFC cards for the Model 3 actually work? This Reddit user has reversed-engineered his Tesla NFC card and discovered a bunch of information about it. First and most importantly, these cards are pretty secure; the other finding that I think is interesting is that the author believes he can use the Tesla key card to authenticate in other devices, like building access.
Read more: RedditFrom issue #84
You can purchase a key fob for your Model 3 for $150. Accoding to a few early reports the key fob doesn’t support summon or passive entry, it is unclear if it is because the car lacks the necessary components or if this will be something that they’ll activate via software later on. If these features are important to you, you probably are better off waiting.
Here is a video of the unboxing, paring, and demo of the Tesla Model 3 key fob.
See more: Tesla ShopFrom issue #33
A few weeks ago we talked about Electrek confirming the key fob for the M3. Well, now they’re reporting that a small number of users are getting them. Some people have reported problems using their phone as a key with several Android devices, and although Tesla has been taking care of these problems, the key fobs may be the so much needed solution.
Read more: ElectrekFrom issue #30