# Service bulletin ITB18\-014a A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned. - Type: Service bulletin - NHTSA id: 10141444 - Published by NHTSA: 2018\-06\-18 - Manufacturer's number: ITB18\-014a - Manufacturer's date: 2018\-05\-08 - NHTSA component: EQUIPMENT; ENGINE ## NHTSA's summary 2019 QX50; MIL ON WITH ?CODE\_200400? OR ?CODE\_001200? STORED This bulletin has been amended throughout. Discard all previous versions of this bulletin. ## The document - [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2018/MC-10141444-9999.pdf) - [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2018/MC-10141444-0001.pdf) The document is the manufacturer's. This site does not hold it. ## Components Engine, Equipment and accessories ## Vehicles listed - 2019 INFINITI QX50 ## Recalls for the same vehicles and component - [2025356](/recalls/tc/2025356.md), 2025-06-27: Engine - [25V437000](/recalls/nhtsa/25V437000.md), 2025-06-27: ENGINE AND ENGINE COOLING:ENGINE:HARD PARTS INTERNAL/MECHANICAL ## Other bulletins for the same vehicles and component - [ITB23\-010E](/bulletins/10251530.md), 2024-03-08, Service bulletin: ELECTRICAL SYSTEM; EQUIPMENT:ELECTRICAL:INFOTAINMENT; EQUIPMENT:ELECTRICAL:INFOTAINMENT:SOFTWARE. SOFTWARE UPDATE FOR INFOTAINMENT ISSUES This bulletin is no longer active. To access infotainment software updates via the Infotainment Software Update Utility: Select SPECIALTY TOOLS, and then select Infotainment Software Updates on the left side of ASIST. Please discard previous versions of ITB23\-010. - [ITB23\-010D](/bulletins/10249897.md), 2024-02-08, Service bulletin: EQUIPMENT:ELECTRICAL:INFOTAINMENT:SOFTWARE; EQUIPMENT:ELECTRICAL:INFOTAINMENT; ELECTRICAL SYSTEM. SOFTWARE UPDATE FOR INFOTAINMENT ISSUES This bulletin is no longer active. To access infotainment software updates via the Infotainment Software Update Utility: Select SPECIALTY TOOLS, and then select Infotainment Software Updates on the left side of ASIST. HINT: Initially, the Infotainment Software Update Utility will be available only on the CONSULT PC version of ASIST. The Utility will be added to ASIST WEB at a later date. Please discard previous versions of ITB23\-010. - [ITB12\-011Q](/bulletins/10249891.md), 2024-02-08, Service bulletin: ELECTRICAL SYSTEM; EQUIPMENT:ELECTRICAL:NAVIGATIONAL SYSTEM\(GLOBAL POSITIONING SYSTEM\). TELEMATICS SERVICE INFORMATION This bulletin has been amended. See AMENDMENT HISTORY on the last page. Please discard previous versions of this bulletin. - [ITB22\-025B](/bulletins/10246430.md), 2023-12-08, Service bulletin: VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM; ENGINE AND ENGINE COOLING. ROARING NOISE FROM THE ENGINE COOLING FAN ASSEMBLY AND THE A/C IS NOT COOLING This bulletin has been amended. See AMENDMENT HISTORY on the last page. Please discard previous versions of this bulletin. - [ITB23\-010C](/bulletins/10242043.md), 2023-09-08, Service bulletin: ELECTRICAL SYSTEM; EQUIPMENT:ELECTRICAL:INFOTAINMENT. SOFTWARE UPDATE FOR INFOTAINMENT ISSUES This bulletin has been amended. See AMENDMENT HISTORY on the last page. Please discard previous versions of this bulletin. - [ITB23\-010B](/bulletins/10242042.md), 2023-09-08, Service bulletin: EQUIPMENT:ELECTRICAL:INFOTAINMENT; ELECTRICAL SYSTEM. SOFTWARE UPDATE FOR INFOTAINMENT ISSUES This bulletin has been amended. See AMENDMENT HISTORY on the last page. Please discard previous versions of this bulletin. - [ITB23\-010](/bulletins/10233823.md), 2023-04-06, Service bulletin: EQUIPMENT:ELECTRICAL:INFOTAINMENT; ELECTRICAL SYSTEM. SOFTWARE UPDATE FOR INFOTAINMENT ISSUES SERVICE INFORMATION When diagnosing an infotainment issue or after replacement of the AV Control Unit, it is necessary to verify the current software version of the AV Control Unit to determine if a software version update is required. Use the vehicle tables in this bulletin to determine the current software version, if the AV Control Unit requires a software version update, and which procedure to use to update the AV Control Unit. The software updates in this bulletin are to address stability improvements and “bug” fixes. IMPORTANT: If the client is experiencing a software related concern, refer to ITB21\-011 to verify if the client concern is a hardware or software related issue. If the concern is a software related issue, review the information in this bulletin to update the AV Control Unit as needed. - [ITB21\-025A](/bulletins/10233660.md), 2023-04-04, Service bulletin: EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. DTC C1A17\-49 STORED IN LASER/RADAR This bulletin has been amended. See AMENDMENT HISTORY on the last page. Please discard previous versions of this bulletin. - [ITB19\-024C](/bulletins/10233657.md), 2023-04-04, Service bulletin: EQUIPMENT. DTC B00A0\-00 STORED This bulletin has been amended. See AMENDMENT HISTORY on the last page. Please discard previous versions of this bulletin. - [ITB22\-025A](/bulletins/10222710.md), 2022-10-07, Service bulletin: ENGINE AND ENGINE COOLING; VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM. ROARING NOISE FROM THE ENGINE COOLING FAN ASSEMBLY AND THE A/C IS NOT COOLING This bulletin has been amended. See AMENDMENT HISTORY on the last page. Please discard previous versions of this bulletin. JSON: [/v1/bulletins/10141444](/v1/bulletins/10141444) [Report an error on this page](https://github.com/wenmar-pro/wenmar-open/issues/new?template=data_correction.yml&title=Data%20correction%3A%20Service%20bulletin%20ITB18-014a&page=https%3A%2F%2Fopen.wenmarpro.com%2Fbulletins%2F10141444&vehicle=Service%20bulletin%20ITB18-014a)