Infiniti FX45 Key Fob Programming
Updated 2026 2003–2008 6 model years
Programming steps, the battery it takes, and the exact replacement fob for every Infiniti FX45 model year we cover (2003–2008). Find your year in the table, then jump to the details for that generation.
Every Infiniti FX45 model year
| Year | Programming | Key fob | Battery |
|---|---|---|---|
| 2008 |
| Remote, Transponder Key, Proximity Key, Remote Head Key · 3/4-button | CR2025 battery on Amazon |
| 2007 |
| Remote, Transponder Key, Proximity Key, Remote Head Key · 3/4-button | CR2025 battery on Amazon |
| 2006 |
| Remote, Transponder Key, Proximity Key, Remote Head Key · 3/4-button | CR2025 battery on Amazon |
| 2005 |
| Remote, Transponder Key, Proximity Key, Remote Head Key · 3/4-button | CR2025 battery on Amazon |
| 2004 |
| Remote, Transponder Key, Proximity Key, Remote Head Key · 3/4-button | CR2025 battery on Amazon |
| 2003 |
| Remote, Transponder Key, Proximity Key, Remote Head Key · 3/4-button | CR2025 battery on Amazon |
2006–2008 Infiniti FX45
Remote / key fob programming
You can program Nissan remote-head keys yourself by cycling the key in the ignition. Have every remote with you — any you don't program during this procedure will stop working.
Full steps: Nissan Remote-Head Key Programming by Ignition Cycling
Key programming
This key fob can't be programmed with a do-it-yourself procedure. The vehicle needs a diagnostic tool connected to its OBD port to pair a new fob, so a replacement has to be set up by an automotive locksmith or a dealer.
Order the correct replacement fob below — match the FCC ID on your current fob first — then have a local automotive locksmith or the dealer program it to your vehicle.
Replacement key fobs
Find your key type below, then match the FCC ID printed on the back of your existing fob — or, for a plain transponder key, the blank code — to be sure of the right part.
Proximity Key
Stays in your pocket — the car unlocks and starts without inserting a key.
3-button Proximity Key
Find on Amazon- FCC ID
- CWTWBU619
- OE part #
- 285E3-CL000, 285E3-CL00D, 285E3-CL01D, 285E3-CL02D
- Frequency
- 315 MHz
- Chip
- PHILIPS ID 46
Remote Head Key
One piece: a cut metal blade with the lock/unlock buttons built into the head.
4-button Remote Head Key
Find on Amazon- FCC ID
- CWTWB1U751, CWTWB1U816
- OE part #
- 5938186, H0561-3AA0A, H0561-3AA0B
- Frequency
- 315 MHz
- Chip
- PHILIPS ID 46
Remote
A separate key fob that only handles locking and unlocking.
3/4-button Remote
Find on Amazon- FCC ID
- CWTWB1U415, CWTWB1U733, CWTWB1U821, KBRASTU15
- OE part #
- 28268-5W500, 28268-5W501, 28268-5W50A, 28268-5Y701, 28268-5Y702, 28268-7Z800 +12 more
- Frequency
- 315 MHz
- Chip
- PHILIPS ID 46
Transponder Key
4 versionsA cut metal key with a chip in the head. No buttons.
Transponder Key
Find on Amazon- Key blank
- AF01627002
- OE part #
- X237
Transponder Key
Find on Amazon- Key blank
- DAT-16
- OE part #
- DA34, JMA-DA34, X237
Transponder Key
Find on Amazon- Key blank
- DAT-15
- OE part #
- DA35, DAT-15, X238
Transponder Key
Find on Amazon- Key blank
- AF01628002
- OE part #
- DA35, X238
Photos show the OEM part for each number listed. Aftermarket replacements sold online are often slightly different in appearance — the FCC ID, not the shape, is what determines whether a fob will work with your car.
2004–2005 Infiniti FX45
Remote / key fob programming
You can program Nissan remote-head keys yourself by cycling the key in the ignition. Have every remote with you — any you don't program during this procedure will stop working.
Full steps: Nissan Remote-Head Key Programming by Ignition Cycling
Key programming
This key fob can't be programmed with a do-it-yourself procedure. The vehicle needs a diagnostic tool connected to its OBD port to pair a new fob, so a replacement has to be set up by an automotive locksmith or a dealer.
Order the correct replacement fob below — match the FCC ID on your current fob first — then have a local automotive locksmith or the dealer program it to your vehicle.
Replacement key fobs
Find your key type below, then match the FCC ID printed on the back of your existing fob — or, for a plain transponder key, the blank code — to be sure of the right part.
Proximity Key
2 versionsStays in your pocket — the car unlocks and starts without inserting a key.
3-button Proximity Key
Find on Amazon- FCC ID
- NHVWBU612
- OE part #
- 285E3-CG000, 285E3-CG010, 285E3-CG025
- Frequency
- 433 MHz
3-button Proximity Key
Find on Amazon- FCC ID
- CWTWBU619
- OE part #
- 285E3-CL000, 285E3-CL00D, 285E3-CL01D, 285E3-CL02D
- Frequency
- 315 MHz
- Chip
- PHILIPS ID 46
Remote Head Key
One piece: a cut metal blade with the lock/unlock buttons built into the head.
4-button Remote Head Key
Find on Amazon- FCC ID
- CWTWB1U751, CWTWB1U816
- OE part #
- 5938186, H0561-3AA0A, H0561-3AA0B
- Frequency
- 315 MHz
- Chip
- PHILIPS ID 46
Remote
A separate key fob that only handles locking and unlocking.
3/4-button Remote
Find on Amazon- FCC ID
- CWTWB1U415, CWTWB1U733, CWTWB1U821, KBRASTU15
- OE part #
- 28268-5W500, 28268-5W501, 28268-5W50A, 28268-5Y701, 28268-5Y702, 28268-7Z800 +12 more
- Frequency
- 315 MHz
- Chip
- PHILIPS ID 46
Transponder Key
4 versionsA cut metal key with a chip in the head. No buttons.
Transponder Key
Find on Amazon- Key blank
- AF01627002
- OE part #
- X237
Transponder Key
Find on Amazon- Key blank
- DAT-16
- OE part #
- DA34, JMA-DA34, X237
Transponder Key
Find on Amazon- Key blank
- DAT-15
- OE part #
- DA35, DAT-15, X238
Transponder Key
Find on Amazon- Key blank
- AF01628002
- OE part #
- DA35, X238
Photos show the OEM part for each number listed. Aftermarket replacements sold online are often slightly different in appearance — the FCC ID, not the shape, is what determines whether a fob will work with your car.
2003 Infiniti FX45
Remote / key fob programming
You can program Nissan remote-head keys yourself by cycling the key in the ignition. Have every remote with you — any you don't program during this procedure will stop working.
Full steps: Nissan Remote-Head Key Programming by Ignition Cycling
Key programming
This key fob can't be programmed with a do-it-yourself procedure. The vehicle needs a diagnostic tool connected to its OBD port to pair a new fob, so a replacement has to be set up by an automotive locksmith or a dealer.
Order the correct replacement fob below — match the FCC ID on your current fob first — then have a local automotive locksmith or the dealer program it to your vehicle.
Replacement key fobs
Find your key type below, then match the FCC ID printed on the back of your existing fob — or, for a plain transponder key, the blank code — to be sure of the right part.
Proximity Key
Stays in your pocket — the car unlocks and starts without inserting a key.
3-button Proximity Key
Find on Amazon- FCC ID
- NHVWBU612
- OE part #
- 285E3-CG000, 285E3-CG010, 285E3-CG025
- Frequency
- 433 MHz
Remote Head Key
One piece: a cut metal blade with the lock/unlock buttons built into the head.
4-button Remote Head Key
Find on Amazon- FCC ID
- CWTWB1U751, CWTWB1U816
- OE part #
- 5938186, H0561-3AA0A, H0561-3AA0B
- Frequency
- 315 MHz
- Chip
- PHILIPS ID 46
Remote
A separate key fob that only handles locking and unlocking.
3/4-button Remote
Find on Amazon- FCC ID
- CWTWB1U415, CWTWB1U733, CWTWB1U821, KBRASTU15
- OE part #
- 28268-5W500, 28268-5W501, 28268-5W50A, 28268-5Y701, 28268-5Y702, 28268-7Z800 +12 more
- Frequency
- 315 MHz
- Chip
- PHILIPS ID 46
Transponder Key
4 versionsA cut metal key with a chip in the head. No buttons.
Transponder Key
Find on Amazon- Key blank
- AF01627002
- OE part #
- X237
Transponder Key
Find on Amazon- Key blank
- DAT-16
- OE part #
- DA34, JMA-DA34, X237
Transponder Key
Find on Amazon- Key blank
- DAT-15
- OE part #
- DA35, DAT-15, X238
Transponder Key
Find on Amazon- Key blank
- AF01628002
- OE part #
- DA35, X238
Photos show the OEM part for each number listed. Aftermarket replacements sold online are often slightly different in appearance — the FCC ID, not the shape, is what determines whether a fob will work with your car.
Infiniti FX45 key fob battery
Your Infiniti FX45 key fob uses a CR2025 3V lithium coin cell. A fresh one typically lasts 3–5 years.
Buy Energizer CR2025 Lithium Coin Batteries (4-pack) on AmazonHow to replace the battery
- 1 Slide the release latch and pull the metal emergency key out of the fob.
- 2 Use that key (or a coin) to pry the two halves apart at the seam.
- 3 Lift out the old coin cell — note which side faces up.
- 4 Drop in the new battery the same way (printed + side usually faces the back cover).
- 5 Press the case back together until it clicks, then test lock/unlock and push-to-start.
Battery tips
- Use a fresh, name-brand 3V lithium cell — bargain cells drain quickly.
- Even with a dead fob battery you can usually still start the car by holding the fob against the start button — check your owner's manual.
- If the fob still won't work after a new battery, it may need re-syncing or programming.
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