Toyota Highlander 2017–2019 — technical service bulletin
Bulletin T-TT-0545-19 · NHTSA communication 10161537 · issued May 22, 2019
Technical service bulletin
communication type
Electrical System
component
2017–2019
model years
3
vehicle entries
Official summary
TT: Some vehicles may have a U0110 DTC.
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.