T-TT-0377-15
Service Bulletin Details
Public Details for: T-TT-0377-15
Tt: some customers may experience poor outgoing bluetooth sound quality, this can occur for various reasons. Current multimedia systems are designed with the ability to adjust bluetooth sound quality to compensate for echo or excessive back
Models from 2016
Models from 2015
Models from 2014
2014 TOYOTA 4RUNNER |
2014 TOYOTA CAMRY |
2014 TOYOTA COROLLA |
2014 TOYOTA HIGHLANDER |
2014 TOYOTA RAV4 |
2014 TOYOTA TACOMA |
2014 TOYOTA TUNDRA |
Tech Tip T-TT-0377-15 Subject December 07, 2015 Market Adjustment of Bluetooth Hands Free Sound Quality Service Category Section Audio/Visual/Telematics Cellular Communication USA Applicability 13CY Audio Systems APPLICABLE VEHICLES 2014-2016 2016 2015-2016 2016 2015-2016 2015-2016 2015-2016 2014-2016 2014-2016 2014-2016 Camry Prius Sienna Mirai Prius V Sequoia Avalon Tacoma Highlander HV Corolla 2014-2016 2014-2016 2015-2016 2016 2014-2016 2016 2014-2016 2015-2016 2014-2016 Highlander Tundra Avalon HV Land Cruiser 4Runner RAV4 HV RAV4 Prius C Camry HV CONDITION Some customers may experience poor outgoing Bluetooth sound quality, this can occur for various reasons. Current multimedia systems are designed with the ability to adjust Bluetooth sound quality to compensate for Echo or excessive background noise. RECOMMENDATIONS Background on how to use Hands Free Voice Quality Settings There is a 4 digit code used to set the hands free sound quality The first digit sets noise level compensation The second digit sets Echo level compensation The 3 and 4th digits should always be 0. You can choose from 0 to 2 for each compensation. 0 is no compensation and 2 is maximum compensation. The information below is found in the repair manual section: NAVIGATION / MULTI INFO DISPLAY: NAVIGATION SYSTEM: OPERATION CHECK HOW TO ADJUST HANDS-FREE VOICE QUALITY AND VOLUME SETTING (a) Enter diagnostic mode. (b) Select "Function Check/Setting" from the "Service Menu" screen. (c) Select "HF Voice Quality Setting" from the "Function Check/Setting I" screen. (d) Hands-Free Voice Quality Setting (Voice Quality Type adjustment) Expires on Ver. 2.6 09/01/2015 T 12/07/2016 © 2015, Toyota Motor Sales, USA Page 1 of 4 Tech Tip T-TT-0377-15 December 07, 2015 Subject Market Adjustment of Bluetooth Hands Free Sound Quality USA Applicability RECOMMENDATIONS *a Numeric Keypad *b Setting Button *c Reset Button (1) If necessary, refer to the table below to adjust the voice quality type with the numeric keypad. (2) When adjusting the settings, use the number pad on the screen to input the voice quality type according to the table. Settings VOICE PARAMETER A (Noise) B (Noise) C (Echo) D (Echo) Expires on Ver. 2.6 09/01/2015 T TARGET PHENOMENON QUALITY POSITIVE EFFECT OF NEGATIVE EFFECT OF TYPE CHANGING VOICE QUALITY CHANGING VOICE QUALITY The other party hears background noise when 1000 listening to your voice. The other party hears a lot of background noise when 2000 listening to your voice. The other party hears weak echoes. The other party hears strong echoes. 12/07/2016 0100 0200 The amount of background The volume of voice the noise the other party hears when listening to your voice is other party hears when listening to your voice may reduced. temporarily drop. The amount of background The volume of voice the noise the other party hears other party hears when when listening to your voice is sharply reduced. listening to your voice may temporarily drop. Sound quality of the other The amount of echo is reduced party deteriorates (low (low level). level). The amount of echo is reduced (high level). © 2015, Toyota Motor Sales, USA Sound quality of the other party deteriorates (high level). Page 2 of 4 Tech Tip T-TT-0377-15 December 07, 2015 Subject Market Adjustment of Bluetooth Hands Free Sound Quality USA Applicability RECOMMENDATIONS Settings (When Multiple Phenomenon Occurred) VOICE PARAMETER TARGET PHENOMENON NEGATIVE EFFECT OF QUALITY TYPE POSITIVE EFFECT OF CHANGING VOICE QUALITY A+C The other party hears background noise and weak echoes when listening to your voice. noise the other party hears when listening to your voice 1100 The other party hears background noise and strong echoes when listening to your voice. background noise and weak echoes when listening to your The amount of echo is reduced (high level). The amount of background noise the other party hears when listening to your voice 2100 voice. B+D Expires on Ver. 2.6 09/01/2015 T echoes when listening to your voice. 12/07/2016 is sharply reduced. The amount of echo is The amount of background noise the other party hears when listening to your voice 2200 is sharply reduced. The amount of echo is reduced (high level). © 2015, Toyota Motor Sales, USA The volume of voice may drop temporarily. Sound quality of the other party deteriorates (low level). The volume of voice may drop temporarily. Sound quality of the other party deteriorates (high level). The volume of voice may drop temporarily. Sound quality of the other party deteriorates (low level). reduced (low level). The other party hears a lot of background noise and strong The amount of background noise the other party hears when listening to your voice is reduced. 1200 The other party hears a lot of B+C is reduced. The amount of echo is reduced (low level). A+D The amount of background CHANGING VOICE QUALITY The volume of voice may drop temporarily. Sound quality of the other party deteriorates (high level). Page 3 of 4 Tech Tip T-TT-0377-15 December 07, 2015 Subject Market Adjustment of Bluetooth Hands Free Sound Quality USA Applicability RECOMMENDATIONS HINT: The default value is "0000". Settings will be applied when the setting button is selected. If voice quality type values that are not in the table are input, the setting will not be applied and a positive effect may not be gained. If the quality of phone calls decreases due to the changed settings, return the settings to "0000" by pressing the "INIT" switch. LINK REFERENCES This Tech Tip does not contain any link references Expires on Ver. 2.6 09/01/2015 T 12/07/2016 © 2015, Toyota Motor Sales, USA Page 4 of 4