Intelligent Access (IA) Key
NOTE:
The Tire Pressure Monitor (TPM) module may also be known as the Radio Transceiver Module (RTM).
The IA key incorporates both the PATS and the RKE transmitter functions in a single device. The IA key must be located inside the vehicle for engine starting and on the outside for IA features. During key programming procedures, the PATS and RKE transmitter of an IA key are both programmed into the RFA module. The RFA module accepts programming of up to 4 IA keys.
The IA key receives the low frequency signals from the passive start antennas. When the IA key is activated by one of the low frequency signals, it sends out a high frequency signal that is received by the TPM module. The IA key also contains a key blade that is used to unlock the driver door in the event of an electrical failure (such as a drained battery).