Toyota Tacoma 2018–2022 — technical service bulletin
Bulletin TTT068422 · NHTSA communication 10214326 · issued Mar 17, 2022
Technical service bulletin
communication type
Power Train
component
2018–2022
model years
5
vehicle entries
Official summary
TT: Water intrusion to the ADD actuator is currently being investigated as a cause of 4WD inoperative complaints. P17A0 and P17A4 DTCs may set for this condition but not always
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.