Toyota Highlander 2019 — technical service bulletin
Bulletin T-TT-0517-18_Rev · NHTSA communication 10164899 · issued Aug 12, 2019
Technical service bulletin
communication type
Electrical System
component
2019
model years
2
vehicle entries
Official summary
TT: Voice navigation prompts and feedback beeps are inoperative after starting the engine. This condition only occurs on Platinum grade vehicles.
Vehicles covered
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.