Remote Keyless Entry (RKE)

The RKE system allows the use of a remote battery-powered radio transmitter to signal the BCM to actuate the power lock system. The RKE receiver operates on non-switched battery current through a fuse in the JB, so that the system remains operational, regardless of the ignition switch position. The RKE transmitters are also equipped with a Panic button. If the Panic button on the RKE transmitter is depressed, the horn will sound and the exterior lights will flash on the vehicle for about 3 minutes, or until the Panic button is depressed a second time. A vehicle speeds of about 15 MPH (25.7 KM/H) will also cancel the panic event. The RKE system can also perform other functions. If the vehicle is equipped with the optional Vehicle Theft Security System (VTSS), the RKE transmitter will arm the VTSS when the Lock button is depressed, and disarm the VTSS when the Unlock button is depressed. The RKE system includes 2 transmitters when the vehicle is shipped from the factory, but the system can retain the vehicle access codes of up to 4 transmitters. The transmitter codes are retained in the RKE receiver memory, even if the battery is disconnected. If an RKE transmitter is faulty or lost, new transmitter vehicle access codes can be programmed into the system using a DRBIII® scan tool. This vehicle also offers several customer programmable features, which allows the selection of several optional electronic features to suit individual preferences. Customer programmable feature options affecting the RKE system include:

1. Remote Unlock Sequence
   
   Allows the option of having only the driver side front door unlock when the RKE transmitter Unlock button is depressed the first time. The remaining doors and the tailgate unlock when the button is depressed a second time within 5 seconds of the first unlock press. Another option is having all doors and the tailgate unlock upon the first depression of the RKE transmitter Unlock button.
2. Sound Horn On Lock
   
   Allows the option of having the horn sound a short chirp as an audible verification that the RKE system received a valid Lock request from the RKE transmitter, or having no audible verification.
3. Flash Lights With Lock & Unlock
   
   Allows the option of having the lights flash as an optical verification that the RKE system received a valid Lock request or Unlock request from the RKE transmitter, or having no optical verification.
4. Programming Additional Transmitters
   
   Allows up to 4 transmitter vehicle access codes to be stored in the receiver memory. Certain functions and features of the RKE system rely upon resources shared with other electronic modules in the vehicle over the PCI data bus network. The PCI data bus network allows the sharing of sensor information. This helps to reduce wire harness complexity, internal controller hardware, and component sensor current loads. For diagnosis of these electronic modules or of the PCI data bus network, the use of a DRBIII® scan tool and the appropriate diagnostic information are required. See BODY CONTROL MODULES - LIBERTY article.