Circuit/System Description

The keyless entry system is a vehicle entry device. The keyless entry will unlock the vehicle doors when a corresponding button on the keyless entry transmitter is pressed. This is accomplished by the key fob sending a radio frequency to the body control module (BCM). The signal is received by an internal antenna located within the BCM. The BCM interprets the signal and activates the requested function. A low transmitter battery or radio frequency (RF) interference from aftermarket devices such as 2-way radios, power inverters, cellular phone chargers, computers, etc. may cause a system malfunction. High RF traffic areas, such as gas stations which use pay-at-the-pump RF transponders, may also cause interference that could lead to a malfunction.