2012 Buick LaCrosse Owner's Manual - Page 218

7-44 Infotainment System Playback of an audio device that is connected to the 3.5 mm jack can only be controlled using the controls on the device. If an auxiliary device has already been connected, but a different source is currently active, Press SOURCE repeatedly to cycle through all of the available audio source screens, until the AUX source screen is selected. The AUX input is located in the center console. Adjusting the Volume Turn the VOL/ O knob to adjust the volume of the infotainment system after the volume level has been set on the portable audio device. Auxiliary Devices (Radio with CD and Touchscreen) The optional AUX input allows portable devices to connect to the vehicle using the 3.5 mm (1/8 in) input jack or the USB port. Portable devices are controlled by using the menu system described in Overview (Radio with CD) on page 7‑4 or Overview (Radio with CD/DVD and MEM) on page 7‑6 or Overview (Radio with CD and Touchscreen) on page 7‑8. This jack is not an audio output. Do not plug headphones into the auxiliary input jack. Drivers are encouraged to set up any auxiliary device while the vehicle is in P (Park). 3.5 mm Jack Connect a 3.5 mm (1/8 in) cable to the auxiliary input jack to use a portable audio player.