Infiniti QX80 2019–2021 — technical service bulletin
Bulletin ITB21-031 · NHTSA communication 10206351 · issued Dec 17, 2021
Technical service bulletin
communication type
Equipment
component
2019–2021
model years
3
vehicle entries
Official summary
OIL LEAK AT REAR OF TRANSMISSION SERVICE INFORMATION When diagnosing an oil leak at the rear of the transmission on an applied vehicle, follow the SERVICE PROCEDURE in this bulletin to determine if the origin of the leak is at the rear extension seal, or at the pressed-in plug of the propeller shaft sleeve yoke (Figure 1).
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.