TSB: Some 2019 model year Sienna vehicles equipped with Entune? 3.0 Premium Audio (version 1187) may exhibit one or more of the following conditions. ? Intermittent black screen ? Intermittent garbled screen ? Intermittent screen freeze ? Entune? apps inoperative ? Destination Assist inoperative ? Hybrid Navigation inoperative ? Hybrid Voice Recognition inoperative Updated head units are available through the exchange program. Follow the Repair Procedure in this bulletin to address this condition.
