Toyota Highlander 2017–2022 — technical service bulletin
Bulletin TTT068522 · NHTSA communication 10214329 · issued Mar 21, 2022
Technical service bulletin
communication type
Engine and Engine Cooling
component
2017–2022
model years
10
vehicle entries
Official summary
TT: Some 17-22MY Highlander, and 17-20MY Sienna vehicles with engine serial numbers that start with F or G may experience an engine oil leak condition from the No.2 Oil pan. This issue is currently under investigation. Please take detailed pictures of the oil pan leak condition before repair. If condition is on applicable vehicles with engine serial numbers that do not start with F or G, disregard, and proceed with normal repair.
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.