Toyota 2008 FJ Cruiser Owner's Manual page 246

Type B
Operating portable audio devices connected to the audio system
n
The volume can be adjusted using the vehicle's audio controls. All other
adjustments must be made on the portable audio device itself.
n When using a portable audio device connected to the power outlet or
cigarette lighter
Noise may occur during playback. Use the power source of the portable
audio device.
3-2. Using the audio system
Press .
3
223