System Operation: RKE

The RKE feature is controlled by the BCM. When a button is pressed, the Transmitter Identification Code (TIC) and RKE command is received by the RTM. The RTM interprets the information and sends a message to the BCM over a LIN circuit and, when the network is awake, over the CAN. If the BCM detects a valid programmed key, it carries out the command by sending a lock/unlock command to the door latch control modules or sending a message to the RGTM to power open/close the liftgate, or activating the horn or turn signals as required.

The RKE transmitters have a normal operating range of 30 m (98 ft) in an open air, no obstruction environment.

The RKE transmitters and the BCM also utilize a rolling code to prevent the code from being captured by a code grabber. The system advances the counter in the RKE transmitter and the BCM every time a RKE transmitter button is pressed.