Bluetooth use: If USB is connected before the car starts, Bluetooth needs to be manually connected, but Bluetooth phone can be answered normally under USB and AUX connection. If Bluetooth music is needed, you need to cut off USB and AUX first, and then reconnect Bluetooth; Please note: When using Bluetooth to answer a phone, some mobile phones may need to choose to use speakers, otherwise they will be preferred. Radio Operation: If there is a DISC in the CD player, press CD/DISC button 1 time is CD mode, press 2 times to play USB, RPT switch to AUX, RDM switch to USB, CD key switch back to CD (if no disc in it only can be switched by RDM button to the USB mode);. Not work with following radio model: 52867 (Vios), Aygo, 58805 (2003 RAV4 ), 56018, 58813, T18303, B9010, B9004 (2007 RAV4), RAV4 with a factory navigation, TNS Travel 700, W58816, T18303, W13807 / W13081 / W13086 (Auris), W53904 (Panasonic, Avensis 2005-2007), W58832, 36458, AD1812(Delphi on 2010-2011 Tundra / Sequoia), AD6900 (Delphi on 2000-2004 Avalon), and other ADxxxx radios. Please note that this adapter just fit for above car model without with Navigation, DVD System or any Wide Screen Radios. Please note 3.5mm AUX NOT support Radio Panel Control. The Splitter/Y cable is needed if the CD changer port is occupied by others (except for being occupied by CD Changer). Compatible with: camry 2005-2011,corolla 2005-2011,4runner 2005-2011, RAV4 2005-2011,tacoma 2005-2008,sienna 2004-2008, highlander 2004-2011,yaris 2006-2011,celica 2003-2005, Land Cruiser 2005-2011,Venza 2009-2011, Vitz 2006-2010,Avensis 2003-2011, Auris 2007-2011,Mark X 2005-2011;. Built-in bluetooth 5.0 and Build-in high performance mic and clip-on design, for your clear hands-free calling and safe driving.