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. ...

Maintenance-Free Battery
Your vehicle is equipped with a maintenance-free battery. You will never have to add water, nor is periodic maintenance required. NOTE: The battery is stored under an access cover in the trunk. ...

Listen To An Audio Source On Channel 2 While A Video Is Playing On Channel 1
Ensure the Remote Control and Headphone switch is on Channel 2. ...