2019 Toyota Camry — Key Fob Programming Guide

Quick reference

Item	Detail
FCC ID	Varies by trim (Smart Key vs. remote). Check the printed FCC ID on your existing fob shell to match exactly.
OEM Fob PN	Varies by trim/options. Verify by VIN with dealer/locksmith or read the part number on your original fob label.
Aftermarket Options	New ("virgin") OEM-equivalent fobs available; used/proxy fobs often cannot be reused. Match FCC ID and PN exactly.
Battery Type	Smart Key (push-button start): CR2032. Remote key (keyed ignition): commonly CR2016. Always verify by opening your fob.
Programmable On-Board?	No. 2019 Camry requires a dealer/locksmith scan tool (Techstream or equivalent).
Cuts Required?	Yes. Smart Key has an emergency blade that must be cut; keyed-ignition versions require the main blade cut and chipped key programmed.

Step-by-step on-board programming

DIY on-board programming is not supported on the 2019 Toyota Camry for either the remote functions or the immobilizer. Toyota requires key/fob registration through the vehicle’s immobilizer/Smart Key ECU using a professional scan tool (Toyota Techstream or a capable locksmith tool). Here’s what the process looks like so you know what to expect:

1. Identify your system

• Push-button start = Smart Key System (proximity fob with an emergency key blade).
• Keyed ignition = Remote keyless entry remote plus a transponder key chip in the key head.

2. Obtain the correct new fob/key

• Purchase a brand-new (virgin) fob that exactly matches your original FCC ID and part number. Used Smart Keys are typically locked to the first car and will not program without advanced re-seeding (not a DIY task).

3. Have the blade cut

• Smart Key: the pull-out emergency blade must be cut to your key code/VIN.
• Keyed ignition: the main metal key must be cut.

4. Schedule programming with a pro

• A mobile automotive locksmith or Toyota dealer connects a scan tool to your OBD-II port. With at least one working key, they perform an “Add a key/fob.” With no working keys, a security (seed) reset is required.

5. Registration procedure (summary)

• Smart Key: the technician opens the Smart Key Utility, verifies your VIN and security, then initiates key registration. You’ll be asked to hold the new fob to the Start/Stop button or place it near the steering column. The car beeps/flashes to confirm.
• Keyed ignition: the technician runs Immobilizer/ID Code Registration, then Remote Lock/Unlock registration for the buttons.

6. Test all functions

• Lock/unlock, trunk, panic; for Smart Key: passive entry on door handles and engine start with the fob in your pocket. Verify the cut blade operates the door lock.

Why no DIY? Toyota’s 2019 immobilizer/Smart Key is security-hardened. Remote and transponder pairing are blocked from the usual “door open/close, key on/off” procedures used on older models.

Battery replacement

Smart Key (push-button start, most 2019 Camry trims):

1. Slide the release to remove the emergency key blade.
2. Insert the blade tip into the case seam and gently twist to split the two halves.
3. Note battery orientation. Replace with a CR2032 coin cell (positive side up on most). Avoid touching the new battery faces with bare fingers.
4. Snap the case back together and reinsert the blade. Test lock/unlock.

Remote key (keyed ignition trims):

1. Remove the small screw (if equipped) and pry the case at the notch.
2. Note polarity and replace the coin cell (commonly CR2016—verify yours).
3. Reassemble and test.

Where to buy a replacement fob

• Toyota dealer

  • Pros: Guaranteed correct part by VIN; latest firmware; full support.
  • Cons: Highest price. Typical total for Smart Key: $350–$600+ parts/programming; keyed ignition: $200–$350.

• Automotive locksmith (mobile or shop)

  • Pros: Usually lower cost than dealer; comes to you; can cut and program on-site.
  • Cons: Must verify they supply a new/virgin fob matched to your FCC ID/PN. Typical totals: Smart Key $250–$500; keyed ignition $160–$300.

• Online (Amazon/eBay/parts sites)

  • Pros: Lowest part price; convenient.
  • Cons: Risk of receiving a used/locked or wrong FCC ID/PN fob; most sellers do not program. You’ll still pay a locksmith/dealer to program and may be charged extra if the part is incorrect. Only buy items explicitly sold as new/virgin and returnable.

If on-board programming isn’t supported

• Expect a scan tool session. With at least one working fob, an add-key service is faster and cheaper. If all keys are lost, expect a security reset that adds time and cost.
• Immobilizer/transponder notes: 2019 Camry uses an 80-bit transponder in keyed versions and an AES-encrypted Smart Key for push-button start. These are non-clonable in typical retail settings and must be registered to the car’s ECU.
• Cost expectations (rough):
  • Add-a-key: Smart Key $200–$350; keyed ignition $120–$220.
  • All keys lost: Smart Key $350–$700; keyed ignition $200–$400 (may require towing if no mobile service).
• Time on site: 20–60 minutes for add-a-key; 45–90 minutes for all-keys-lost security reset.

Find a mobile locksmith or shop on Repairius.