Keyless Entry System Description and Operation - Active

WARNING: This page is about a different car, the 2008 Cadillac CTS. However, it is still accessible from the selected car via links, so may be relevant.

The keyless entry system is a vehicle entry device. The keyless entry system is used in conjunction with the door locks to unlock the vehicle. Keyless entry will lock/unlock a door or open the rear compartment lid when a corresponding button on the keyless entry transmitter is pressed. This is accomplished by the transmitter sending a radio frequency to the remote control door lock receiver (RCDLR). The RCDLR interprets the signal and activates the requested function via a serial data message. A low transmitter battery or radio frequency (RF) interference from aftermarket devices, such as 2-way radios, power inverters, computers, etc., may cause a system malfunction. High RF traffic areas, such as gas stations that use pay-at-the-pump RF transponders, may also cause interference that could lead to a malfunction. Keyless entry allows you to operate the following components:

Door locks
Rear compartment lid release
Illuminated entry lamps
Panic alarm/Vehicle locator
Remote vehicle start

The keyless entry system has the following components:

Keyless entry transmitters
LH and RH door antennas (part of the door handle assembly)
Rear compartment antenna
Headliner and console antennas
Console active antenna
Body Control Module (BCM)
Remote Control Door Lock Receiver (RCDLR)