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Tesla keys: Key Card, Phone Key and the fob, the 19-key limit, pairing and losing all keys

≈ 2 min read
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Drivetrain · RWD, AWD, AWD Performance
Updated · July 26, 2026
Contents

Quick FAQ

What key types does a Tesla have?
Three. Key Card: an NFC card tapped against the reader on the body/console. Phone Key: a smartphone over Bluetooth Low Energy, the car recognizes it on approach. Key Fob: a fob with buttons (locks, trunk, Summon), standard for Model S/X, sold as a separate accessory for Model 3/Y.
How many keys can be paired to one Tesla?
Up to 19 identifiers at once, in any combination of cards, phones and fobs. A driver profile is tied to a specific key: mirrors, seat, climate and even a speed limit.
What do I do if I've lost all my Tesla keys?
Access is restored through a shop: the procedure goes through the diagnostic port with immobilizer reprogramming and mandatory verification of ownership (the car's documents). It takes up to 2 hours. Minsk reference: recovery after a total loss from 300 BYN, a regular key card pairing from 100 BYN, a fob from 150 BYN.
Bought a used Tesla — what should I do with the keys first?
Delete ALL of the previous owner's keys from the immobilizer and pair your own. Up to 19 identifiers can be paired to the car, including other people's phones: as long as they're on the list, the previous owner keeps physical access to the car. The same applies to access via the Tesla account.
How long does pairing a new key take?
A standard single-key pairing at a shop is 20–40 min: writing the key's cryptographic data into the car's memory and registering it with the immobilizer. Your own keys (a card, a phone) can also be added yourself from the screen, as long as you have at least one working key.

The three key types

  • Key Card: an NFC card. Tapped against the reader on the pillar/console. Needs no battery, lives in a wallet; it's also the "key of last resort" when your phone dies.
  • Phone Key: a smartphone over Bluetooth Low Energy. The car recognizes it on approach, unlocks and is ready to drive with no action needed.
  • Key Fob: a fob with buttons for locks, trunk and Summon. Standard for Model S/X; an optional accessory for Model 3/Y.

Up to 19 identifiers in any combination can be paired to one car (tsk.by breakdown). A driver profile is tied to a specific key: mirrors, seat, climate, speed limit. Handy for a family and for a valet-style mode.

How pairing works

Your own keys are added from the car's screen as long as a working key is present. A shop pairing (for example, when no working keys are left or you need a fob) goes through the diagnostic port directly with the immobilizer: the key's cryptographic data is written into the car's memory and the key is registered in the system. The same channel is used to delete lost or compromised keys. A standard single-key pairing takes 20–40 min.

ALL keys lost

Access is restored with immobilizer reprogramming and mandatory verification of ownership (the car's documents), and takes up to 2 hours.

Minsk reference, BYN (one shop's numbers, not the market): key card pairing from 100 BYN, a fob from 150 BYN, recovery after a total loss from 300 BYN.

After buying used: the mandatory step

Delete all foreign keys from the immobilizer and pair your own. As long as the previous owner's cards and phones hang on the list, they keep physical access to the car. In parallel, make sure the car is detached from someone else's Tesla account. We also keep this item in the used Tesla buying checklist.

Sources

  • tsk.by
    https://tsk.by/uslugi/privyazka-klyuchej/
Reviewed for accuracy by tsk.by · 26 July 2026
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