2009 Toyota Sienna Owners Manual - Page 315

3-2. Using the audio system n Adjusting the Automatic Sound Levelizer (ASL) ASL automatically adjusts the volume and tone quality to compensate for varying noise levels while driving. Type A and B When "ASL" is selected, turning to the right changes the "ASL" level in the order of "LOW", "MID" and "HIGH". Turning Type C When "ASL" is selected, turning and turning to the right turns "ASL" on, Interior features to the left turns "ASL" off. 3 to the left turns "ASL" off. n Setting the rear seat entertainment system lock (vehicles with rear seat entertainment system) When "RSE" is selected, turn until "RSE ON" or "RSE OFF" is displayed. The rear seat entertainment system lock remains on, even when the engine switch is turned off. 289