2009 Toyota Sienna Owners Manual - Page 313

3 -2 . U sing t he a udio syst e m Opt im a l use of t he a udio syst e m Displays the current mode Changes the following setting • Sound quality and volume balance (→P. 288) The sound quality and balance setting can be changed to produce the best sound. Volume and tone quality level (Automatic Sound Levelizer) (→P. 289) • Rear seat entertainment system lock on/off (→P. 289) • 3 Interior features 287