When fitted with the touch-screen navigation system, the radio can be controlled with illuminated steering wheel buttons, buttons next to the center screen, and with buttons integrated into the navigation system. Users can also run through presets on the steering wheel, but a tuning button would be nice, too. As it is, the driver has to stretch for the tuning button on the dash. Signal strength was a problem. The navigation system includes voice controls and a tilting screen that washes out in daylight. A RTN (return) button next to the screen is in place of a more useful touch-screen Back button, and destination points can only be entered when the CX-9 is stopped. An auxiliary MP3 jack is located inside the center armrest.