2010 Toyota Highlander Owners Manual - Page 933

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. 309) The sound quality and balance setting can be changed to produce the best sound. ● Automatic Sound Levelizer on/off (→P. 310) ● Rear seat entertainment system lock on/off (→P. 310) 308