See also:

Horn
Press on the steering wheel pad to sound the horn. ...

Using Universal Home Remote
Press and hold the appropriate button for at least half of a second. The indicator light will come on while the signal is being transmitted. ...

Unlock Feedback (Lights)
When on, the exterior lamps will flash when unlocking the vehicle with the RKE transmitter. Press SELECT when Unlock Feedback (Lights) is highlighted. Turn the Menu knob to select On or Off. ...