System Operation: RKE: Notes
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 programmed key, it carries out the command by controlling the door locks, releasing the liftgate latch or activating the traffic horn/exterior sounder or turn signals as required.
The RKE system can be used to:
- unlock the driver door.
- unlock all doors.
- lock all doors.
- release the liftgate latch (liftgate release button must be pressed twice within 3 seconds).
- arm/disarm the perimeter alarm.
- activate/deactivate the panic alarm.
- global open the windows (press the unlock button and then within 10 seconds press and hold the unlock button for 3 seconds) (if equipped).
- global close the windows (press and hold the lock button for 2 seconds) (if equipped).
- remotely start the vehicle.
- configure the staged lock programming (2-stage unlock or global unlock).
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.
The message center displays Key Battery Low Replace Soon when the battery in the key needs to be replaced.