Toyota Highlander 2021–2022 — technical service bulletin
Bulletin T-TT-0690-22 Rev · NHTSA communication 10234309 · issued Mar 3, 2023
Technical service bulletin
communication type
Engine and Engine Cooling
component
2021–2022
model years
6
vehicle entries
Official summary
TT: On some 2021-2022MY Highlander HV, RAV4 HV, RAV4 Prime and Venza models, the connector cover for the Under Floor Wire Harness for the Rear Motor Generator may have the appearance of being damaged or missing
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.