Keyless Entry System Description and Operation: Notes
WARNING: This page is about a different car, the 2004 Cadillac CTS. However, it is still accessible from the selected car via links, so may be relevant.
The keyless entry system is a supplementary vehicle entry device. Radio frequencies or discharged batteries may disable the system.
Keyless entry allows you to operate the following components:
- The door locks, including the rear compartment
- The illuminated entry lamps
- The panic alarm
The keyless entry system has the following main components:
- The transmitters
- The radio antenna module
When you press a button on a transmitter, the transmitter sends a RF signal to the radio antenna module. The module interprets the signal and activates the requested function via a class 2 message over the serial data line.