How to Program a Toyota Key Fob (DIY, Dealer, or Locksmith)

Toyota published one of the longest onboard remote programming sequences in the industry, and it works on a surprising number of Camry, Corolla, RAV4, Tacoma, Tundra, Sienna and Highlander models. It programs only the lock and unlock buttons, though. The immobilizer chip and the Toyota Smart Key System need equipment.

This guide explains each Toyota key type, the full remote sequence, the older master-key system, and when to call a professional.

Toyota key types and immobilizer generations

Toyota’s transponder chips changed several times (often called 4C, 4D, G and H by locksmiths), which is why an older key blank may not work on a newer car even if the blade fits. The letter stamped on the blade near the head often identifies the chip type.

What you need

• A remote or key with the correct FCC ID and part number from the back of your original.
• A good battery. Many Toyota remote head keys use a CR2016, and most Smart Keys use a CR2032. See our Toyota key fob battery guide.
• A working key for the ignition, all doors closed except the driver’s door, and a quiet place to count.
• All remotes if you use rewrite mode, which erases stored remotes.

Toyota key fob programming instructions (remote buttons)

This is the widely used Toyota onboard sequence. Timing matters: each step should follow the last within a few seconds, and the whole entry sequence should be done within about 40 seconds. Start with the driver’s door open and unlocked, all other doors closed, and the key out of the ignition.

1. Insert the key into the ignition and remove it.
2. Insert and remove it again (two insertions in total).
3. Close and open the driver’s door twice.
4. Insert and remove the key once.
5. Close and open the driver’s door twice again.
6. Insert the key and close the driver’s door.
7. Turn the ignition from LOCK to ON and back to LOCK once to choose add mode. (Twice selects rewrite mode, which erases all stored remotes.)
8. Remove the key. The locks cycle once for add mode (twice for rewrite mode) to confirm.
9. Within about 40 seconds, press LOCK and UNLOCK on the new remote together for about 1 to 1.5 seconds, release, then press LOCK alone for about 1 second.
10. The locks cycle once if the remote was accepted. Two cycles mean it failed; repeat from the start.
11. Program more remotes within about 40 seconds by repeating step 9, then open the driver’s door to exit.

Some models skip or change steps, and push-button Toyotas do not use this sequence at all. If the locks never cycle at step 8, try again more slowly or check your owner’s manual.

Toyota immobilizer keys and the master key system

Some Toyotas from the late 1990s to the mid-2000s use a master and valet key system. The master key usually has a black head and the valet key a gray head. On many of these models a master key can be used to put the immobilizer into learn mode with a pedal and door sequence, adding a new key without a tool. The sequence varies by model, so treat it as a model-specific procedure from a reliable source or a locksmith.

Newer turn-key Toyotas need a key programmer for the chip. If you have no working key, the immobilizer data often has to be reset first, which is a locksmith or dealer job. Our guide on programming a key fob without a working key explains the process.

Toyota Smart Key programming

Smart Keys register through the OBD2 port using Toyota’s dealer software or a capable aftermarket tool. Adding a key with a working Smart Key is routine for most locksmiths. All-keys-lost on many Smart Key models takes longer and can require working on the smart key ECU or using a bypass adapter, which raises the price. If your dash shows a key not detected message after programming, see our Toyota key not detected guide.

Model notes: Camry, RAV4, Tacoma, Tundra, Sienna, Highlander

• 2006 Camry: separate remote on most cars, so the onboard sequence is a good first try.
• 2016 Camry: remote head key on many trims, Smart Key on others; onboard works for many remote head keys.
• RAV4: remote head key on base trims from the mid-2000s, Smart Key on higher trims.
• Tacoma and Tundra: long-running remote head keys and separate remotes make these good DIY candidates for the remote portion.
• Sienna: mostly Smart Key from the 2011 generation on; earlier vans often use separate remotes.
• 2017 Highlander: Smart Key on most trims, remote head key on the base LE.

Tips for choosing a Toyota replacement key

• Match the FCC ID and part number on the back of the remote or Smart Key. Toyota used several similar-looking keys with different chips and frequencies.
• Look for the chip letter on the blade of remote head keys. A key with the wrong chip will open the doors but will not start the car.
• Know your key limit. Toyota immobilizers store a limited number of keys. If you have lost keys, ask the programmer to erase them.
• Keep your master key. On older models with a master and valet key, losing all master keys makes adding a key harder and more expensive.

If Toyota key fob programming is not working

• Locks cycle twice after step 10: the remote was rejected. Check the FCC ID and battery.
• No lock cycle at step 8: timing was off or a door other than the driver’s was open.
• Remote works, engine will not start: the chip is not registered; the security light usually stays on or flashes.
• Still nothing: see our Toyota key fob not working guide and our list of OBD2 scanners for Toyota.

Toyota key fob programming cost

For other brands and methods, see our main guide on how to program a key fob.

Frequently Asked Questions