Toyota 4RUNNER 2017–2020 — technical service bulletin
Bulletin T-SB-0157-19 · NHTSA communication 10169412 · issued Nov 7, 2019
Technical service bulletin
communication type
Equipment
component
2017–2020
model years
4
vehicle entries
Official summary
TSB: Some 2017 ? 2020 model year 4Runner vehicles equipped with JBL® audio may exhibit poor sound quality coming from the dash speakers or static/feedback heard by the incoming caller. Updated speakers are available to address this condition. Follow the Repair Procedure in this bulletin to address this condition.
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.