2013 Toyota Matrix Owners Manual - Page 226
2013 Toyota Matrix Manual
Page 226 highlights
3 -2 . U sing t he a udio syst e m U sing t he AU X por t This port can be used to connect a portable audio device and listen to it through the vehicle's speakers. Type A STEP 1 Open the cover and connect the portable audio device. STEP 2 Press . Type B STEP 1 Open the cover and connect the portable audio device. 246