Technical Service Bulletin T-SB-0051-21 — 2020 TOYOTA SIENNA

TSB: Some 2019 model year RAV4 and RAV4 Hybrid and 2018 ? 2020 model year Sienna vehicles equipped with Audio Plus (version 1010) or Premium Audio (version 1010) or earlier may exhibit one or more of the following conditions: ?Toyota apps fail to download. ?Bluetooth® is unable to automatically connect after key cycle. ?Abnormal microphone operation. ?Sirius XM® antenna disconnection history Diagnostic Trouble Code (DTC) B15FE. ?No outgoing voice during phone calls when using Apple CarPlay®. ?Incoming calls incorrectly show on the multi-information display (MID) when using Apple CarPlay®. ?CAN networking DTC B1321. ?Volume inoperative after using Siri®. ?Unable to adjust the treble audio setting. ?Song information flickering. ?Unable to select Sirius XM® music genre by voice recognition. ?Noise when hanging up call on handset. ?Transferred contacts do not match the number of handset contacts. ?Sirius XM® sound slow to start. ?Abnormal Toyota apps and Scout Operation Some 2020 model year Prius and Prius Prime, 2019 model year RAV4 and RAV4 Hybrid, and 2018 ? 2020 model year Sienna vehicles equipped with Audio Plus (version 1195), Premium Audio (version 1195), or Navigation (version 1035) or earlier may exhibit one or more of the following conditions: ?Unable to play audio source after incoming call. ?Software enhancements. ?Intermittent rebooting. ?Unable to register Bluetooth® devices from Bluetooth® Audio Mode. ?Unable to pair Android? devices after Google? apps update. ?Unable to access camera diagnosis system. ?USB audio does not resume. ?Intermittent Bluetooth® disconnection. ?Abnormal voice recognition operation. ?Phone call history does not update. ?Bluetooth® loses connection after USB connection is made. ?Clock not displayed on the map screen. ?Intermittent phone ringing with no incoming phone call.