What Is an FCC ID and Why Does It Matter?
An FCC ID is a unique identifier assigned by the Federal Communications Commission to every wireless device sold in the United States, including car key fobs. The FCC ID is the most reliable way to find an exact replacement key fob because it identifies the specific radio frequency, chip type, and button configuration your vehicle requires. Two key fobs may look different but share the same FCC ID, meaning they are functionally identical and interchangeable.
How to Find Your FCC ID
Method 1: Check Your Current Key Fob
Look on the back of your existing key fob for text starting with “FCC ID:” followed by a code like CWTWB1U811 or HYQ14FBA. The FCC ID is usually printed, engraved, or on a sticker on the back or inside the battery compartment.
Method 2: Check Your Owner Manual
Your vehicle owner manual lists the FCC ID in the specifications or key replacement section.
Method 3: Search by Vehicle
Use our search tool at UrbanX to look up your year, make, and model. We cross-reference NHTSA and FCC databases to match the correct key fob to your vehicle.
How to Use the FCC ID to Find a Replacement
- Locate the FCC ID on your current key fob
- Search for that exact FCC ID on UrbanX
- Verify the button count matches (3-button, 4-button, 5-button)
- Check if the listing specifies your vehicle year and make
- Order the replacement — same FCC ID means guaranteed compatibility
Common FCC IDs by Vehicle Make
| Make | Common FCC IDs | Key Type |
|---|---|---|
| Toyota | HYQ14FBA, HYQ14FBN, GQ4-52T | Smart Key |
| Honda | CWTWB1U811, N5F-S0084A, KR5V2X | Smart Key / Remote |
| Ford | M3N-A2C93142300, M3N5WY8609, OUCD6000022 | Smart Key / Remote |
| Chevrolet | HYQ1EA, HYQ1AA, M3N-32337100 | Smart Key / Flip Key |
| Nissan | KR5TXN7, CWTWB1U840, KR55WK48903 | Smart Key |
| Hyundai | SY5MDFNA433, TQ8-FOB-4F11, CQOFD00120 | Smart Key / Flip Key |
Frequently Asked Questions
Can two different-looking key fobs have the same FCC ID?
Yes. The FCC ID identifies the radio transmitter, not the physical casing. An aftermarket fob with the same FCC ID as your OEM fob will work identically because it uses the same frequency and chip.
What if my key fob has no FCC ID?
Some very old remotes (pre-2000) or non-US market keys may lack an FCC ID. In that case, match by vehicle year, make, model, and button count, or contact us for assistance.