Honda OEM Remote Key Fob – A269ZUA108 Transponder | 315 MHz

Operating at 315 MHz with an A269ZUA108 transponder, the Honda OEM Smart Key Fob (FCC ID KR5434760) – Key Details & I OEM Remote Key Fob serves as both a remote entry device and an immobilizer-paired ignition component for select late-1990s Acura platforms. This unit communicates with the vehicle’s receiver module on the 315 MHz band, a frequency standard across many Honda and Acura products of that generation. The fob’s internal circuitry pairs the A269ZUA108 transponder element with the vehicle’s engine control module, preventing unauthorized starts. A correctly enrolled Honda OEM Remote Key Fob will allow seamless keyless entry and engine immobilizer authentication, giving the driver full operational access to the vehicle.

A269ZUA108 Transponder Details for the Honda OEM Remote Key Fob

The A269ZUA108 designation refers to the specific transponder module housed inside this remote. Unlike generic aftermarket transponders that may carry approximate clones, the OEM-spec A269ZUA108 is the factory component Honda car keys & fobs specified for proper immobilizer handshake on compatible vehicles. When the key is inserted into the ignition barrel, the immobilizer antenna ring around the cylinder energizes the transponder, which responds with a rolling or fixed cryptographic challenge. If the ECM validates the response, fuel injection and ignition circuits are enabled.

Locksmiths working with this transponder should note that late-1990s Honda immobilizer systems vary in their on-board programming capabilities. Some model years allow additive key registration through the ignition-cycle method—cycling the key to the ON position a set number of times within a timing window—while others require a diagnostic tool connected to the OBD-II port. In either scenario, the A269ZUA108 chip must be virgin (unprogrammed) or erased before it can be written to a new vehicle. Attempting to clone an already-paired chip without proper equipment will typically result in a no-start condition.

Compatible Vehicles

The Honda OEM Remote Key Fob with the A269ZUA108 transponder fits the following validated Acura models:

• Acura CL — 1997, 1998, and 1999 model years
• Acura EL — 1997 through 2000 model years
• Acura Integra — 1994 through 2001 model years

All three platforms share Honda’s mid-to-late-1990s electrical architecture, which accounts for the common transponder specification. The Acura CL in this generation was a front-wheel-drive coupe based on the Accord platform, while the EL was a compact sedan derived from the Civic and sold primarily in the Canadian market. The Integra, spanning the widest year range on this list, used Honda’s B-series and later GSR powertrains. Despite their mechanical differences, these vehicles rely on the same 315 MHz remote protocol and A269ZUA108 immobilizer chip for keyless entry and anti-theft protection.

OEM vs. Aftermarket Considerations

Vehicle owners sourcing a replacement for this remote should understand the practical differences between OEM and aftermarket units. The factory fob carries the correct transponder part number and is pre-loaded with the proper firmware for pairing. Aftermarket remotes marketed as compatible may use a generic chip that requires additional programming steps or may not support all immobilizer functions. In some cases, aftermarket units have been observed to work for remote lock and unlock but fail the immobilizer challenge, leaving the driver with a key that opens the doors but cannot start the engine.

For locksmiths, verifying the transponder designation before beginning programming saves significant diagnostic time. Confirming the A269ZUA108 marking on the chip—or cross-referencing the part number stamped on the remote’s circuit board—ensures the correct unit is in hand before any registration procedure begins.

Programming Procedure Notes

Programming the remote entry function and the immobilizer transponder are two separate operations, even though both reside in the same physical fob. The remote entry portion—lock, unlock, and where applicable panic—is typically programmed through an onboard sequence that involves the ignition switch and the driver’s door lock cylinder. This procedure usually requires at least one working remote to initiate the vehicle’s learn mode.

The immobilizer side is more involved. On Acura models from this era, a diagnostic tool capable of communicating with the Honda PGM-FI system is the most reliable approach. The tool reads the ECM’s current key count, adds a blank key slot, and then prompts the technician to cycle the new key. Once the A269ZUA108 transponder is registered, the ECM stores its cryptographic identity alongside any previously enrolled keys. Most systems in this generation support up to three or four registered keys simultaneously.

Technicians should also be aware that certain 1994–1996 Integra models may use an earlier-generation immobilizer protocol compared to 1997-and-later cars. While the A269ZUA108 transponder specification covers the entire range listed, the programming entry method and tool compatibility may differ between pre-1997 and post-1997 vehicles. Consulting the specific service manual for the target model year is strongly recommended before beginning work.

When to Contact a Locksmith

Vehicle owners who have lost all copies of their remote or whose existing fob has stopped communicating with the car’s receiver should seek a qualified automotive locksmith rather than attempting DIY reprogramming. The immobilizer component of this fob requires professional-grade diagnostic access, and incorrect programming attempts can temporarily lock out the ECM, adding time and cost to the job. A locksmith experienced with Honda and Acura immobilizer systems from this era will have the correct diagnostic interface and the procedural knowledge to register a new A269ZUA108 transponder efficiently.

Because the Acura CL, EL, and Integra are now well into their second and third decades of service, finding replacement OEM remotes can take some effort. A professional locksmith can also advise on whether an aftermarket unit is a viable substitute for a specific vehicle and verify transponder compatibility before any purchase is made.