Keyless Entry: Description and Operation

REMOTE KEYLESS ENTRY (RKE) (STANDARD EQUIPMENT)
The body control module interfaces with the remote keyless entry module via a one-way serial bus interface. The RKE module is located under the left side of the instrument panel top cover. It does not actuate relays directly but receives the signal from the transmitter and then communicates with the BCM.

Two transmitters are provided with each vehicle, but the RKE module is capable of accommodating four transmitters. The transmitters can be programmed by using the DRBIII(R) or the customer can add a transmitter providing a valid previously programmed transmitter exists. This is accomplished by pressing and holding the programmed transmitter unlock button from 4 to 10 seconds and then while still pressing the unlock button, press and release the panic button. This will put the BCM in programming mode. The customer will have approximately 30 seconds to press any button on each transmitter thereby programming that transmitter to the receiver. A technician with the DRBIII(R) can reprogram any RKE module providing VTSS is disarmed.

The RKE system, operated by the transmitter, has three modes of operation controlled by three buttons.
- Unlock button: Pressing the unlock button once will unlock the driver's door, disarm VTSS and illuminate the interior lamps. Pressing the unlock button twice within 5 seconds unlocks both doors.
- Lock button: Pressing the lock button locks all doors and sounds the horn once (if horn chirp is enabled).
- Panic button: When the panic button is pressed the horn is pulsed, the headlamps and marker lamps are flashed and the interior lamps are turned ON. This will last for up to 3 minutes or until the panic button is pressed again or the ignition is turned ON. The panic feature only works when the ignition is in the OFF position.

*Horn chirp: When all doors are closed and a lock command is sent by the RKE transmitter, a horn chirp will be heard. The horn chirp is also customer programmable by pressing and holding the lock button on the transmitter for 5 seconds and then while still holding the lock button, pressing the unlock button and releasing both. This will toggle (enable/disable) the horn chirp.