Nissan Transponder Key – 4D60 Chip, NSN14 Blade Profile
Built around a 4D60 transponder chip and cut on the NSN14 keyway, the Nissan Transponder Key serves as the primary immobilizer-paired ignition key for several early-2000s Nissan sedans. This unit is identifiable by its mechanical blade profile — the NSN14 is a unilateral, internally-cut pattern common across this generation of Nissan vehicles. Inside the key head sits the 4D60 glass capsule transponder responsible for communicating with the vehicle’s immobilizer ECU during each start cycle. Compatible vehicles share Nissan’s factory anti-theft architecture from that era, which requires a valid transponder response before the engine control module will permit fuel delivery and ignition. A correctly enrolled Nissan Transponder Key will allow seamless engine cranking without triggering the security indicator light on the instrument cluster. Because the 4D60 chip must be cloned or registered to the vehicle’s specific immobilizer memory, the key cannot simply be cut and used — it demands a programming procedure performed with diagnostic equipment or dedicated key programming hardware.
Nissan Transponder Key Specifications and Blade Details
The NSN14 blade profile used by this key is a single-sided, internally-milled design. Locksmiths cutting the blade will recognize it as a standard automotive brass key blank requiring a high-security code machine or manual decoding from the existing key or lock cylinder. The cuts follow a spacing-and-depth scheme that corresponds to Nissan’s factory bitting specifications for the relevant model years. When sourcing blanks, it is important to confirm the blank accommodates the 4D60 transponder chip within the key head, as non-transponder NSN14 blanks exist for older Nissan models that predate immobilizer systems.
The 4D60 chip is a fixed-code transponder — once programmed to a vehicle, it transmits a static encrypted signal that the immobilizer antenna ring around the ignition cylinder reads at close range. Unlike rolling-code or crypto-based transponder systems found in newer vehicles, the 4D60 relies on a comparatively simpler authentication handshake. This does not make it less secure in practical terms for vehicles of this vintage, but it does mean the programming workflow differs from later Nissan models that migrated to 46-type or ID47 transponders.
Vehicle Compatibility
The following Nissan models have been validated as fitments for this transponder key:
- Nissan Altima — 2002, 2003, 2004
- Nissan Maxima — 2000, 2001, 2002, 2003
- Nissan Sentra — 2000, 2001, 2002, 2003, 2004, 2005, 2006
Each of these models shares the same immobilizer platform from the factory. The Sentra covers the widest year range, spanning seven model years before Nissan transitioned to updated key and immobilizer hardware. The Altima and Maxima fitments are narrower, reflecting those models’ earlier adoption of next-generation transponder systems. Owners or locksmiths working on vehicles near the boundary years should verify the existing key type before ordering, as mid-cycle production changes occasionally shifted certain VIN ranges to a different transponder.
Programming the 4D60 Transponder to Nissan Vehicles
Enrolling the Nissan Transponder Key into a vehicle’s immobilizer system requires either a diagnostic programming tool with Nissan immobilizer support or a dedicated transponder cloning device. The two primary approaches differ significantly:
On-Board Programming (OBP): Some Nissan models from this era support a key registration sequence using existing registered keys. The typical procedure involves inserting a working registered key, cycling the ignition through a specific on-off pattern within timed intervals, then switching to the new key and repeating the sequence. The exact step count and timing windows vary by model and year. If the vehicle has lost all registered keys, on-board programming is generally not available, and a diagnostic tool becomes necessary.
Diagnostic Tool Programming: Using a professional-grade automotive programmer with Nissan NATS (Nissan Anti-Theft System) coverage, a locksmith or technician can access the immobilizer ECU directly. This method reads the existing key data, registers the new 4D60 transponder, and writes it into the system’s memory. Tools from manufacturers such as Autel, Xtool, and SmartPro are commonly used in the field for this procedure. The process typically takes under ten minutes once the tool establishes communication with the BCM (Body Control Module).
Cloning: Because the 4D60 is a fixed-code transponder, it can be cloned using devices capable of reading and duplicating the chip’s data onto a new 4D60 blank. Cloning produces a key that mirrors the original transponder’s signal exactly, so no registration step at the vehicle is required. This approach is particularly useful when on-board programming is unavailable or when adding a spare key quickly without diagnostic equipment. The cloned key must still be cut to match the NSN14 blade pattern.
Practical Considerations for Vehicle Owners
For owners of the Altima, Maxima, or Sentra models listed above, replacing or adding a Nissan Transponder Key is a routine procedure that most automotive locksmiths handle on-site. The key blank and transponder chip are widely available in the aftermarket, and programming does not require a dealership visit in most cases. Aftermarket blanks compatible with the 4D60 chip and NSN14 keyway are functionally equivalent to OEM keys for ignition and immobilizer purposes, though the plastic key head may differ cosmetically.
A few points worth noting before ordering or requesting service:
- Confirm the vehicle currently uses a transponder key rather than a non-transponder mechanical key. Some base-model Sentras in the early 2000s shipped without immobilizer systems in certain markets.
- If all keys have been lost, the procedure is more involved and may require PIN extraction or EEPROM reading from the immobilizer module. This is a standard capability for qualified locksmiths but adds time and cost compared to adding a key when a working original is available.
- The key does not contain any remote or keyless-entry electronics. Door lock and unlock functions on these models are handled by a separate remote fob, if equipped. The transponder key is strictly for ignition and immobilizer authentication.
NSN14 Keyway in the Broader Nissan Lineup
The NSN14 keyway appears across multiple Nissan and Infiniti models from the late 1990s through the mid-2000s, though the transponder chip paired with it varies by platform. The combination of NSN14 with the 4D60 chip is specific to the vehicles listed above. Other Nissan models using the NSN14 blade may pair it with different transponder types — ID46, for instance, appears in some overlapping-year Nissan trucks and SUVs. Locksmiths should always verify both the blade profile and chip type before cutting and programming, as a correct blade with the wrong transponder will turn the ignition but fail the immobilizer check, leaving the engine unable to start.
Specifications and fitment
| Key type | Other/Unknown |
|---|---|
| Transponder chip | 4D60 |
| Keyway | NSN14 |
| Region(s) | SA, USA |
| Product type | Transponder |
| Compatible makes | Nissan |
Listed vehicle fitment
| Make | Model | Years |
|---|---|---|
| Nissan | Altima | 2002–2004 |
| Nissan | Maxima | 2000–2003 |
| Nissan | Sentra | 2000–2006 |
Fitment must be confirmed against the existing key’s FCC ID family and the vehicle’s exact configuration before cutting or programming. VIN or photo verification may be required.
Questions and answers
Which vehicles does Nissan Transponder Key fit?
Nissan Transponder Key is listed to fit Nissan applications such as Nissan Altima, Nissan Maxima, Nissan Sentra. Confirm the exact year range and the existing key’s FCC ID family before ordering, since fitment can vary by trim and region.
Does Nissan Transponder Key need programming?
Yes. Because it carries a transponder/remote function (chip 4D60), it must be programmed (paired) to the vehicle’s immobilizer and, for remote functions, to the keyless-entry system. Many vehicles also require at least one working key to add a new one.
Does the blade need to be cut?
Most Nissan Transponder Key units ship uncut and require automotive key cutting before they will turn the ignition or door lock. Cutting establishes the mechanical match; programming establishes the electronic match — both are needed.
Is Nissan Transponder Key OEM or aftermarket?
This listing is an aftermarket-grade replacement intended to match the original key’s electronic and mechanical specification. It is not required to carry a vehicle-brand logo and should be matched by FCC ID family and chip type rather than by appearance.
Check Fitment and Key Help
Low Rate Locksmith, a mobile automotive locksmith, can confirm whether Nissan Transponder Key matches an existing FCC ID family and coordinate cutting and programming when the vehicle configuration requires professional service. For dispatch and support, call (833) 439-8636 or email info@lowratelocksmith.com.
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