See also:

Range
The remote key has a range of approximately 60 ft. (20 m) from the vehicle. NOTE Buildings or other obstacles may interfere with the function of the remote key. The vehicle can also be locked ...

Horn
Horn Press the steering wheel hub to sound the horn. ...

Limitations
In certain situations, the BLIS indicator light(s) may illuminate even when there are no other vehicles in the area monitored by the system. NOTE If the BLIS indicator lights illuminate occasional ...