System Diagram: Discretion
WARNING: This page is about a different car, the 2004 Lexus LS 430. However, it is still accessible from the selected car via links, so may be relevant.
A maximum of 3 kinds of transmitter code based systems (for example, garage doors, gates and entry gates) can be registered with the vehicle's garage door opener. After registration, the vehicle's garage door opener can mimic the signal of the transmitter systems and the original transmitters of each transmitter system are not needed.