Transponder Key - Operation

OPERATION

Special Tools:






The FOB with Integrated Key (FOBIK) incorporates many useful functions into a single, compact unit. The transducer on the internal circuit board of the FOBIK uses low frequency Radio Frequency (RF) communication to ensure vehicle security through an electronic validation or handshake process that is performed with the Radio Frequency Hub (RF Hub) each time the engine is started.

When any one of the Remote Keyless Entry (RKE), liftgate/decklid or remote start buttons of the FOBIK is depressed, the on-board transmitter of the FOBIK generates a high frequency RF request signal that is received and validated by the RF Hub. If the RF Hub determines the RF signal was generated by a FOBIK that is valid for the vehicle, the RF Hub relays electronic request messages to the appropriate electronic modules in the vehicle over the Controller Area Network (CAN) data bus to invoke the functions or features associated with the request.

Each vehicle owner is provided with a four-digit Personal Identification Number (PIN) by the dealer at the time of vehicle purchase. This number is required along with a diagnostic scan tool for the dealer to program an additional or replacement FOBIK into the electronics of the vehicle. The emergency key included with a new additional or replacement blank FOBIK must also be cut to match the coding of the lock cylinders in the vehicle.

Diagnosis of a FOBIK transmitter requires the use of a Radio Frequency Detector such as or (CH9936). Refer to the appropriate diagnostic information. Testing and Inspection

EMERGENCY STARTING

The integrated mechanical key of the FOBIK provides emergency access to the vehicle in case the battery in the vehicle or the transmitter becomes discharged.
In the event that the battery in the FOBIK is low or there is a Low Frequency Antenna problem:
- Hold the FOBIK with the key ring away from the Keyless Ignition Node (KIN).
- With the "Lock/Unlock" button end of the FOBIK, press the Start/Stop Button (SSB).
- Push gently to prevent scratching the KIN's surface.

Programming FOBIKs
For FOBIK Programming, Testing and Inspection