TextQX55 Key Security, Generation by Generation
First Generation (DB13)
Server-authenticated programming makes this one a dealer-level job, and we have the tools and tokens to handle it. Your QX55 uses a 5-button Intelligent Key (FCC ID: KR5TXN1) with the INFINITI Vehicle Immobilizer System, also known as NATS. It is a proximity smart key with push-button start, a hidden high-security emergency blade, and a CR2032 battery inside the fob.
What Key Does Your QX55 Actually Use?
This is the only key type for your QX55. It is a proximity fob that unlocks when you touch the door handle and starts the engine with the push button. There is a small metal emergency key hidden inside for when the battery dies.
Infiniti QX55 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.
Why Drivers Pick Us Over the Dealer
Marco tests the existing QX55 fob and the immobilizer state before quoting anything. The Kearny Mesa Infiniti service desk books you in, tows your car, and hands you a bill regardless of whether the fob actually needed replacing.
Skip the Dealer - Call (619) 876-1271Problems We See on the Infiniti QX55
Transponder Programming Lockout
If someone tried pairing an aftermarket fob without Nissan/Infiniti server auth, NATS flags the car and refuses to handshake with even the original. Marco resets and re-registers with proper auth in Encinitas or Otay Mesa.
Intelligent Key Battery Failure
We start with the CR2032 inside your fob. Frequent remote start use drains it faster; proximity unlock gets flaky before the fob dies. Battery swap is two minutes and we confirm communication before packing the van.
Door Handle Sensor Malfunction
Dirt and moisture build up in capacitive sensors on door handles during San Diego County rainy stretches. Grab the handle, nothing, owners blame the key. Usually the sensor. Cleaning often fixes it; if sensor failed, dealer must replace hardware.
Remote Start Incompatibility
Your QX55's push-button remote start works through the factory Intelligent Key, and it is tightly linked to the NATS immobilizer. Third-party remote start systems on the 2023 and 2024 models can conflict with this, causing a no-start condition though the engine cranks. If someone installed an aftermarket remote starter and now car will not start, a dealer reflash of the immobilizer is the fix. We can diagnose it on-site and tell you what is going on before you spend a dime.
Can You Program a QX55 Key on Your Own?
No DIY self-programming exists for the QX55. The Intelligent Key requires server authentication through professional tools. You need a BSIS-licensed locksmith or the dealer for this one.
How It Works
Reach Out
Call or text (619) 876-1271 with your exact Infiniti QX55 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 QX55 is parked.
Cut, Program, Verified
We cut the high-security emergency blade on-site and program your new Intelligent Key using server-authenticated tools.
Related Services
Worth Knowing
Most San Diego QX55 owners do not realize their fob (part 285E3-5NY7A, FCC ID KR5TXN1) stores a unique driver profile that remembers seat position, mirror angle, and climate settings. Two fobs equal two driver profiles. So if your spouse keeps moving the seat in Carmel Valley, the fix is to make sure both of you carry the matching key. Marco can pair a second fob to its own profile at your address.
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.
