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. ...

AM/FM Button
Press the button to select either AM or FM mode. ...

Towing Requirements – Trailer Brakes
− Do not interconnect the hydraulic brake system or vacuum system of your vehicle with that of the trailer. This could cause inadequate braking and possible personal injury. − An ele ...