2009 Toyota Highlander Owners Manual - Page 330

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 l Sound quality and volume balance (→P. 303) The sound quality and balance setting can be changed to produce the best sound. l Automatic Sound Levelizer on/off (→P. 304) l Rear seat entertainment system lock on/off (→P. 304) 302