Navigation Manual
Page 171
... mode 4: Driver seat priority mode BAS: Adjusts low-pitched tones. "WIDE 1": When a 3 4 screen is displayed, the remaining parts will be widened vertically and horizontally, in black. TRE: Adjusts high-pitched tones. RX350_Navi_U (L/O 0612) AUDIO/VIDEO SYSTEM 171 D Selecting screen size You can adjust the audio sounds with the "AUDIO CONTROL" knob...
... mode 4: Driver seat priority mode BAS: Adjusts low-pitched tones. "WIDE 1": When a 3 4 screen is displayed, the remaining parts will be widened vertically and horizontally, in black. TRE: Adjusts high-pitched tones. RX350_Navi_U (L/O 0612) AUDIO/VIDEO SYSTEM 171 D Selecting screen size You can adjust the audio sounds with the "AUDIO CONTROL" knob...