Keyless Entry System Description and Operation (without ATH): Notes

WARNING: This page is about a different car, the 2010 Buick LaCrosse. 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 body control module (BCM) to remotely activate certain vehicle features. Keyless entry will lock/unlock the doors/liftgate, operate the power liftgate (if equipped), or release the liftglass when a corresponding button on the keyless entry transmitter is pressed. This is accomplished by the transmitter sending a radio frequency to the BCM. The BCM interprets the signal and performs the requested function. A low transmitter or vehicle battery or radio frequency interference from aftermarket devices, such as 2-way radios, power inverters, computers, etc., may cause a system malfunction. High radio frequency traffic areas may also cause interference that could lead to a malfunction. Keyless entry allows you to operate the following components:

Door locks
Liftgate lock
Power liftgate, if equipped
Liftglass, if equipped
Remote vehicle starting, if equipped
Illuminated entry lamps
Vehicle locator/Panic alarm
Comfort Open and Comfort Close, if equipped

The keyless entry system has the following components:

Keyless entry transmitters
BCM