Strattec 5-Button Smart Key Fob (FCC ID NBG009768T) – Full Guide

Operating at 315 MHz with an NXP PCF7937E transponder chip, the Strattec 5-Button Smart Key Fob (FCC ID NBG009768T) serves as the primary proximity entry and push-to-start device for select Cadillac models produced between 2010 and 2019. This unit features five buttons on its face and communicates with the vehicle’s Body Control Module to authenticate passive entry, remote start, and ignition authorization. Inside the fob sits the PCF7937E integrated circuit, responsible for immobilizer pairing and cryptographic handshake with the vehicle’s anti-theft system. Compatible vehicles share General Motors’ smart key proximity architecture, requiring the device to be within close range of the steering column for engine start authorization. A correctly enrolled Strattec 5-Button Smart Key Fob (FCC ID NBG009768T) will allow the driver to unlock doors on approach, lock them on departure, and start the engine without inserting a physical key. The Strattec 5-Button Smart Key Fob (FCC ID NBG009768T) is registered under FCC certification NBG009768T, confirming its RF output compliance at the 315 MHz band used across North American GM platforms.

Strattec 5-Button Smart Key Fob (FCC ID NBG009768T) – Technical Specifications

Strattec Security Corporation manufactures this smart key to OEM-equivalent standards, and the fob carries the FCC identifier NBG009768T stamped on its rear housing or printed on the internal circuit board. The transponder chip integrated into the device is the NXP PCF7937E, a widely recognized automotive security IC that supports AES-128 encryption for immobilizer communication. This chip belongs to the PCF793x family developed by NXP Semiconductors, engineered specifically for automotive keyless entry and immobilizer applications. The 315 MHz operating frequency aligns with the standard RF band allocated for automotive remote keyless entry systems in the United States and Canada.

The five-button layout on the fob typically corresponds to lock, unlock, remote start, trunk release, and panic functions. Each button press generates a rolling-code RF signal at 315 MHz that the vehicle’s receiver module decodes and validates before executing the requested action. The proximity detection function operates independently of button presses — the vehicle’s antennas continuously poll for the fob’s low-frequency transponder response when a door handle is touched or the push-to-start button is pressed.

Vehicle Compatibility

Based on verified fitment data, this smart key fob is compatible with the following Cadillac models:

• Cadillac ATS — model years 2012 through 2019
• Cadillac SRX — model years 2010 through 2016
• Cadillac XTS — model years 2013 through 2019

All three platforms share a common GM proximity key architecture. The ATS covers both sedan and coupe body styles across its production run, while the SRX was Cadillac’s mid-size luxury crossover before being succeeded by the XT5. The XTS served as the brand’s full-size sedan. Despite differences in platform size and powertrain, these vehicles use the same 315 MHz smart key protocol and accept the PCF7937E-equipped fob for both passive entry and push-button ignition.

Programming and Enrollment Procedures

Enrolling the fob to a vehicle requires a diagnostic scan tool capable of communicating with the GM Body Control Module (BCM). On-board programming methods — where a sequence of ignition cycles and button presses registers a new remote — are not available for smart proximity keys on these Cadillac platforms. A professional automotive locksmith or dealership technician connects to the OBD-II port and initiates the key learning procedure through the BCM’s security access protocol.

The PCF7937E transponder inside the device must be virgin (unprogrammed) or cleared before it can be paired to a new vehicle. Once the BCM grants security access, the tool instructs the module to enter learn mode, at which point the fob is placed on or near the steering column area. The BCM polls the transponder, writes the vehicle-specific encryption seed, and stores the fob’s identifier in its memory. After enrollment, the fob’s rolling code synchronizes with the receiver, and the proximity detection loop recognizes it as an authorized device.

Locksmiths working with this product should note that GM platforms from this era typically allow up to eight smart keys to be registered simultaneously. When adding a new fob, it is standard practice to re-register all existing fobs during the same programming session, since some BCM firmware revisions erase previously stored keys when entering learn mode.

OEM vs. Aftermarket Considerations

Strattec Security Corporation is one of the primary OEM key and lock suppliers for General Motors, which means the fob carrying FCC ID NBG009768T meets factory specifications for shell construction, button durability, waterproofing, and RF output power. Vehicle owners seeking a replacement should be aware that aftermarket alternatives exist at lower price points, but not all third-party smart keys contain genuine NXP PCF7937E transponders. Substitute chips may use compatible protocols but can exhibit reduced communication range or pairing failures during the BCM enrollment process.

When evaluating a replacement, verifying the FCC ID printed on the unit is one of the fastest ways to confirm authenticity. The identifier NBG009768T is searchable in the FCC’s public equipment authorization database, which lists the original grantee, test reports, and authorized frequency band. A legitimate unit will match these records.

Battery and Maintenance

The fob is powered by a standard CR2032 coin cell battery. Typical battery life ranges from two to four years depending on usage frequency and environmental conditions. When the battery voltage drops below the threshold required for reliable RF transmission, the vehicle’s instrument cluster will display a “Key Fob Battery Low” message. Even with a dead battery, the transponder chip can still be powered inductively by holding the fob against the push-to-start button, allowing the engine to start in an emergency.

Replacing the battery involves separating the fob’s front and rear housing halves — usually by inserting a small flat tool into the seam along the edge. The CR2032 cell sits in a visible holder on the circuit board. After replacement, no reprogramming is necessary; the rolling code and transponder pairing remain intact in the chip’s non-volatile memory.

When to Contact a Locksmith

Professional locksmith service is required whenever a new fob needs to be enrolled to a vehicle, when all existing fobs have been lost, or when the BCM must be reset due to a security fault. Automotive locksmiths equipped with GM-compatible diagnostic platforms can perform the full programming procedure on-site, eliminating the need for a dealership visit or vehicle tow. For owners of the Cadillac ATS, SRX, or XTS, mobile locksmith service is often the most practical solution, particularly when the vehicle is stranded without a functional proximity key.