Audio Output
WARNING: This page is about a different car, the 2008 Cadillac SRX. However, it is still accessible from the selected car via links, so may be relevant.
All of the vehicles audio sources AM, FM, XM (if equipped), weather, CD, TV (export), and DVD movies can be controlled independently through the rear seat entertainment system and heard independently through the wireless headphones. This allows the rear entertainment system audio output to the wireless headphones be different from the vehicle speaker output. When the wireless headphones are in use the rear speakers are muted by the rear entertainment system.