Handles, Locks, Latches and Entry Systems - System Operation and Component Description: RKE

The RKE feature is controlled by the BCM. When a button is pressed (Integrated Keyhead Transmitter (IKT) or passive key), 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 or activating the horn or turn signals as required.

The RKE system can be used to:

• unlock the driver door.
• unlock all doors.
• lock all doors.
• release the luggage compartment lid latch (luggage compartment lid release button must be pressed twice within 3 seconds).
• arm/disarm the perimeter alarm (if equipped).
• 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 (if equipped with the factory remote start system).
• configure the staged unlock programming (2-stage unlock or global unlock).

The RKE transmitters for an Integrated Keyhead Transmitter (IKT) have a normal operating range of 20m (65.62 ft) in an open air, no obstruction environment.

The RKE transmitters for a passive key have a normal operating range of 50m (165 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.