Toyota 4RUNNER 2014–2019 — technical service bulletin

Bulletin T-TT-0574-19 · NHTSA communication 10166024 · issued Sep 18, 2019

Technical service bulletin

communication type

Equipment

component

2014–2019

model years

vehicle entries

Official summary

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 background noise.

Vehicles covered

2014 Toyota 4RUNNER
2015 Toyota 4RUNNER
2016 Toyota 4RUNNER
2017 Toyota 4RUNNER
2018 Toyota 4RUNNER
2019 Toyota 4RUNNER
2015 Toyota Avalon
2016 Toyota Avalon
2017 Toyota Avalon
2018 Toyota Avalon
2014 Toyota Camry
2015 Toyota Camry
2016 Toyota Camry
2017 Toyota Camry
2014 Toyota Corolla
2015 Toyota Corolla
2016 Toyota Corolla
2017 Toyota Corolla
2018 Toyota Corolla
2019 Toyota Corolla
2014 Toyota Highlander
2015 Toyota Highlander
2016 Toyota Highlander
2017 Toyota Highlander
2018 Toyota Highlander
2019 Toyota Highlander
2016 Toyota Mirai
2017 Toyota Mirai
2016 Toyota Prius
2017 Toyota Prius
2018 Toyota Prius
2019 Toyota Prius
2015 Toyota Prius C
2016 Toyota Prius C
2017 Toyota Prius C
2019 Toyota Prius Prime
2015 Toyota Prius V
2016 Toyota Prius V
2017 Toyota Prius V
2018 Toyota Prius V
2014 Toyota RAV4
2015 Toyota RAV4
2016 Toyota RAV4
2017 Toyota RAV4
2018 Toyota RAV4
2016 Toyota RAV4 HV
2017 Toyota RAV4 Hybrid
2015 Toyota Sequoia
2016 Toyota Sequoia
2017 Toyota Sequoia
2018 Toyota Sequoia
2019 Toyota Sequoia
2015 Toyota Sienna
2016 Toyota Sienna
2017 Toyota Sienna
2014 Toyota Tacoma
2015 Toyota Tacoma
2016 Toyota Tacoma
2017 Toyota Tacoma
2018 Toyota Tacoma

What a TSB means. Technical service bulletins are repair guidance manufacturers send to dealers — they are not recalls, and repairs are not automatically free (warranty extensions are an exception worth checking). The full document is available via NHTSA’s vehicle lookup.