Honda OEM Remote Head Key (FCC ID N5F0602A) – Specs & Info
Used in select Acura models including the MDX (2007–2013) and RDX, the Honda OEM Remote Head Key (FCC ID N5F0602A) serves as a combined ignition key and remote entry device built around the PCF7936 transponder chip. Each Honda OEM Remote Head Key (FCC ID N5F0602A) integrates a 315 MHz RF transmitter for keyless entry alongside the embedded immobilizer element, all housed in a single integrated shell with a HON66-profile mechanical blade. For technicians, this remote head key presents specific programming considerations because the PCF7936 must be enrolled into the vehicle’s immobilizer ECU before the engine will crank. Owners needing a replacement unit should be aware that proper cloning or on-board programming is required — a blank Honda OEM Remote Head Key (FCC ID N5F0602A) will not start the vehicle until the transponder has been paired. When correctly programmed, the device communicates seamlessly with the body control module to handle both door lock actuation and immobilizer authentication.
Transponder and Frequency Details for the Honda OEM Remote Head Key (FCC ID N5F0602A)
The transponder inside this key is a PCF7936, a crypto-capable chip widely recognized in the automotive locksmith trade for its rolling-code immobilizer protocol. During ignition cycling, the vehicle’s antenna ring energizes the PCF7936 element embedded in the key head, which responds with an encrypted handshake. If the response does not match what the immobilizer ECU expects, fuel delivery and ignition spark are inhibited. This anti-theft layer makes unauthorized duplication significantly more difficult than copying a simple mechanical key.
On the RF side, the fob operates at 315 MHz under FCC ID N5F0602A. This frequency is standard for the North American market and is used to transmit lock, unlock, and — depending on the specific variant — trunk or panic commands to the vehicle’s receiver module. Range typically extends 30 to 50 feet in open conditions, though interference from nearby transmitters, building structures, or a weakened CR-series coin-cell battery can reduce effective distance.
HON66 Blade Profile and Mechanical Cutting
The integrated blade on this remote head key uses the HON66 keyway, a high-security profile characterized by an internal-cut (track) design rather than conventional edge cuts. HON66 blades require specialized cutting equipment — either a laser/Tibbe-style cutter or an electronic key machine with the appropriate HON66 jaw set and decoder card. Standard edge-cut duplicators cannot produce this profile.
Locksmiths decoding the mechanical bitting can either read the cuts from an existing working key using a HON66 gauge or pull the code from the vehicle’s lock cylinder. OEM key code databases may also provide bitting information when given the vehicle’s VIN, though availability varies by year and model. Once the blade is cut, it should be tested in the driver’s door lock and ignition cylinder to confirm smooth operation before proceeding with transponder programming.
Vehicle Fitment: Acura MDX and Acura RDX
The validated fitments for this key are the Acura MDX spanning model years 2007 through 2013 and the Acura RDX. Although marketed under Honda’s luxury division, Acura vehicles use Honda-platform electronics, and this OEM remote head key is fully compatible with the immobilizer and body control architecture in those models. Technicians should confirm year-specific compatibility for the RDX, as production changes can affect transponder enrollment procedures.
Both the MDX and RDX from this era share a similar immobilizer topology, meaning the programming workflow is largely consistent. However, locksmiths should verify through their diagnostic tool’s vehicle selection menu whether any mid-cycle hardware revisions affect the key registration process for a given VIN.
Programming Considerations
Enrolling this unit into an Acura MDX or RDX typically requires an automotive diagnostic tool capable of Honda/Acura immobilizer functions. The two main scenarios are adding a key when at least one working key is available and performing a full key registration when all keys have been lost.
When a working key exists, many diagnostic platforms support an “add key” procedure that leverages the existing registered key to authorize enrollment of the new one. The technician inserts the registered key, cycles the ignition per the on-screen prompts, then swaps in the new key containing the blank PCF7936 for registration. The process writes the new transponder’s cryptographic identity into the ECU’s key table.
In a situation where no working key is available, the procedure escalates in complexity. The locksmith may need to read the immobilizer ECU’s seed data — often requiring PIN or security code extraction — before the tool can write a fresh key list. Some platforms handle this entirely through the OBD-II port, while others may require direct connection to the immobilizer module. In either case, the mechanical blade must already be correctly cut to the vehicle’s bitting before programming begins, since the key needs to physically turn the ignition barrel during the enrollment sequence.
OEM vs. Aftermarket Considerations
Because this is an OEM Honda product, the shell quality, button feel, and transponder reliability are consistent with factory standards. Aftermarket alternatives exist at lower price points, but quality can vary — particularly in the PCF7936 chip sourcing and the durability of the key shell’s button pads over time. The HON66 blade blank in aftermarket versions may also differ slightly in material hardness, which can affect long-term wear in the ignition cylinder.
For vehicle owners, choosing an OEM unit reduces the risk of fitment surprises during programming. For locksmiths, stocking OEM remotes alongside trusted aftermarket alternatives provides flexibility depending on the customer’s budget and expectations. Regardless of origin, the programming procedure remains the same — the immobilizer ECU does not differentiate between OEM and aftermarket as long as the PCF7936 chip responds with the correct protocol.
Battery and Maintenance
The remote entry portion of this key is powered by a replaceable coin-cell battery housed inside the key head. When RF range diminishes noticeably — requiring the owner to stand closer to the vehicle for lock and unlock commands to register — a battery swap is the first troubleshooting step. The key shell typically separates along a seam line accessible with a small flathead screwdriver or coin, revealing the battery compartment. Replacing the battery does not affect the transponder programming; the immobilizer chip is passive and draws its power from the antenna ring’s inductive field during ignition.
Periodic inspection of the blade for wear is also recommended, especially on high-mileage vehicles where years of daily insertion and removal can round off the internal track cuts, eventually causing binding or failure to turn the wafers.
Specifications and fitment
| Key type | Remote Key |
|---|---|
| Transponder chip | PCF7936 |
| Frequency (MHz) | 315 |
| Keyway | HON66 |
| FCC ID(s) | N5F0602A |
| Region(s) | USA |
| Product type | Remote Head |
| Compatible makes | Acura |
Listed vehicle fitment
| Make | Model | Years |
|---|---|---|
| Acura | MDX | 2007–2013 |
| Acura | RDX |
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 Honda OEM Remote Head Key (FCC ID N5F0602A) fit?
Honda OEM Remote Head Key (FCC ID N5F0602A) is listed to fit Acura applications such as Acura MDX, Acura RDX. Confirm the exact year range and the existing key’s FCC ID family before ordering, since fitment can vary by trim and region.
Does Honda OEM Remote Head Key (FCC ID N5F0602A) need programming?
Yes. Because it carries a transponder/remote function (chip PCF7936), 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 Honda OEM Remote Head Key (FCC ID N5F0602A) 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 Honda OEM Remote Head Key (FCC ID N5F0602A) 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 Honda OEM Remote Head Key (FCC ID N5F0602A) 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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