Infiniti QX50 2019 — technical service bulletin
Bulletin ITB19-021 · NHTSA communication 10164644 · issued Aug 23, 2019
Technical service bulletin
communication type
Engine and Engine Cooling
component
2019
model years
1
vehicle entries
Official summary
2019 QX50; DRIVE BELT CHIRP NOISE IF YOU CONFIRM The drive belt makes a chirp type noise when accelerating the vehicle and/or revving the engine in Park. ACTION Compare the vehicleâ s ECM and TCM part numbers with those listed in TABLE A and TABLE B, respectively, in this bulletin. ï · If there is a match, reprogram the ECM. ï · If there is a match, also reprogram the TCM.
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.