TextFX37 Key Security, Generation by Generation
S51 Second Generation Facelift
This is where Infiniti's security got serious on the FX platform. Your 2013 FX37 runs the NATS immobilizer system with a Philips ID46 transponder chip baked into a 4-button smart key. No turning a key in the ignition here; it's push-button start with proximity unlock on the door handles, and the whole system requires OBD-II programming with a professional scan tool. No shortcuts, no workarounds.
What Key Does Your FX37 Actually Use?
This is the rectangular fob with four buttons and a hidden emergency key blade tucked inside. You never insert it anywhere; just carry it in your pocket and the car recognizes it when you grab the door handle or press the start button.
Infiniti FX37 Key Pricing in San Diego County
Quoted on-site at your location: blank, blade cut, transponder or remote programming, full functional test before we close the van.
Us Compared to the Dealer
Same Autel IM608 the Infiniti service department leans on, just at your curb in Rancho Bernardo or your apartment lot in North Park. No flatbed, no week-long ticket.
Skip the Dealer - Call Now: (619) 876-1271Problems We See on the Infiniti FX37
Smart Key Battery Failure
The CR2032 in your FX37 fob drains hard because Intelligent Key keeps the proximity antennas live whenever the car is in range. Handles stop responding, push-button start ignores the press. Marco swaps coin cells and shells in the van curbside.
Transponder Programming Lockout
First check when your FX37 will not start after a battery swap or key loss: whether NATS has gone into lockout. Car thinks someone is trying to steal it. We use a Nissan-compatible scan tool to pull the PIN and reset in your El Cajon driveway.
Request Switch Malfunction
You grab the FX37 door handle and nothing happens. On the 2013, proximity sensors inside the handles corrode, especially near the coast in Mira Mesa or San Diego. If pressing unlock on the fob works, it is the sensor, not your key.
Can You Program a FX37 Key on Your Own?
No self-programming procedure exists for the 2013 FX37. The NATS immobilizer requires a professional scan tool with PIN code retrieval to register any new smart key. This is a locksmith or dealer job, no way around it.
How It Works
Reach Out
Call or text (619) 876-1271 with your exact Infiniti FX37 year and how many working keys you still have.
We Roll to You
Anywhere across San Diego County, from Oceanside down to Imperial Beach, we drive to where the Infiniti FX37 is parked.
Cut, Program, Verified
We cut the high-security emergency blade on a precision key machine, then connect to your FX37's OBD-II port with an Autel IM608 to retrieve the NATS pin code and register the new smart key's Philips ID46 transponder to your car.
Related Services
Background Worth Having
Most 619-area FX37 owners do not realize the 2013 model year was the only year Infiniti ever sold the FX37 in the US. Just one model year on the showroom floor with the 3.7L VQ37VHR V6 before the lineup got renamed QX70 for 2014. The Intelligent Key system in your fob is shared with that early QX70, which is handy if you ever upgrade because the spare you have us cut today still works as a reference for the next one.
KEY REPLACEMENT ACROSS ALL OF SAN DIEGO COUNTY
We come to you, anywhere in San Diego County. No shop visit, no towing. Our mobile locksmith arrives at your home, office, or roadside.
Infiniti Key Work Live
Watch an Infiniti proximity fob get cut and synced on location.
Infiniti Key Replacement Call Now
QX60, Q50, QX80. Infiniti key service across all of San Diego County.
