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

WARNING: This page is about a different car, the 2020 Ford F-150. However, it is still accessible from the selected car via links, so may be relevant.

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 controlling the door locks, releasing the tailgate latch or activating the horn or turn signals as required.

The RKE system can be used to:

unlock the driver door.
unlock all doors (and the tailgate).
lock all doors (and the tailgate).
release the tailgate latch (tailgate release button must be pressed twice within 3 seconds) (if equipped).
arm/disarm the perimeter alarm.
activate/deactivate the panic alarm.
remotely start the vehicle.
configure the staged lock programming (2-stage unlock or global unlock).

The RKE transmitters for an IKT have a normal operating range of 20m (66 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.