See also:

Power-Up
After switching the ignition key from OFF to either the ON or ACC position, or after a language change, you must wait at least fifteen seconds prior to using the system. ...

Using HomeLink
To operate, press and release the programmed HomeLink button. Activation will now occur for the programmed device (i.e., garage door opener, gate operator, security system, entry door lock, home ...

Voice Command Tree
Refer to “Voice Tree” in this section. ...