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Service bulletins for the 2021 Infiniti QX50

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.

127 on file from NHTSA, as of 2026-10-19.

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Bulletins, newest first
ITB17-001E2024-01-09. Service bulletin. POWER TRAIN. FLUID LEAK CAUSED BY TRANSFER ASSEMBLY RIGHT SIDE DRIVE SHAFT OIL SEAL This bulletin has been amended. See AMENDMENT HISTORY on the last page. Please discard previous versions of this bulletin.
ITB22-025B2023-12-08. 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.
ITB23-010C2023-09-08. 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.
ITB23-010B2023-09-08. 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.
ITB22-043A2023-06-07. Service bulletin. EQUIPMENT:ELECTRICAL:INFOTAINMENT. INFOTAINMENT CONTROL UNIT REPLACEMENT SERVICE INFORMATION This bulletin has been amended. See AMENDMENT HISTORY on the last page. Please discard previous versions of this bulletin.
ITB23-0152023-05-05. Service bulletin. ELECTRICAL SYSTEM. DTC B2E1B-06 (AUTOMATIC ECALL) STORED AS CURRENT IN IVC SERVICE INFORMATION The APPLIED VEHICLES that come equipped with a factory installed SOS switch, located near the overhead map lamp, also come equipped with a wireless communication device called a Telematics Communication Unit (TCU). With an active NissanConnect® Services subscription, the TCU communicates with the Nissan Data Center to provide various security and convenience services. 1. When diagnosing DTC B2E1B-06 (AUTOMATIC ECALL) on an APPLIED VEHICLE: • If DTC B2E1B-06 is not “CRNT” in the IVC, DO NOT replace the TCU. Erase the DTC. No further steps are needed. • If DTC B2E1B-06 is “CRNT” in the IVC, replace the TCU. o Refer to the ESM: REPAIR > DRIVER INFORMATION & MULTIMEDIA > AUDIO, VISUAL & NAVIGATION SYSTEM > REMOVAL AND INSTALLATION > TCU
ITB23-010A2023-05-05. Service bulletin. 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.
ITB22-014A2023-05-05. Service bulletin. ELECTRICAL SYSTEM. ENABLING WIRELESS APPLE CARPLAY® FEATURES This bulletin has been amended. See AMENDMENT HISTORY on the last page. Please discard previous versions of this bulletin.
ITB21-026B2023-05-04. Service bulletin. ELECTRICAL SYSTEM. SOFTWARE UPDATE FOR CLOCK INCORRECT This bulletin has been amended. See AMENDMENT HISTORY on the last page. Please discard previous versions of this bulletin.
ITB14-011G2023-05-03. Service bulletin. ELECTRICAL SYSTEM. REMOTE ENGINE START NOT WORKING This bulletin has been amended. See AMENDMENT HISTORY on the last page. Please discard previous versions of this bulletin.
ITB03-051Q2023-05-03. Service bulletin. EXTERIOR LIGHTING. HEADLAMP, FOG LAMP, OR REAR COMBINATION LAMP FOGGING This bulletin has been amended. See AMENDMENT HISTORY on the last page. Please discard previous versions of this bulletin.
ITB23-0102023-04-06. 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.
ITB23-0092023-04-04. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT:ELECTRICAL:INFOTAINMENT. INFOTAINMENT SYSTEM IN RENTAL CARS FREQUENTLY REBOOTS IF YOU CONFIRM The infotainment system of an APPLIED VEHICLE is frequently rebooting, AND The APPLIED VEHICLE is in a rental car fleet. ACTION Update the infotainment software. • Refer to ITB23-010 for the latest infotainment update-software, infotainment update procedures, and claims information. IMPORTANT: The purpose of ACTION (above) is to give you a quick idea of the work you will be performing. You MUST closely follow the entire SERVICE PROCEDURE located in ITB23-010 as it contains information that is essential to successfully completing this repair.
ITB21-025A2023-04-04. 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.
ITB20-021E2023-04-04. Service bulletin. ELECTRICAL SYSTEM. SOFTWARE UPDATE FOR INFOTAINMENT ISSUES This bulletin has been superseded by: ITB23-010 SOFTWARE UPDATE FOR INFOTAINMENT ISSUES Please discard previous versions of this bulletin.
ITB19-024C2023-04-04. 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.
ITB19-013D2023-04-04. Service bulletin. FORWARD COLLISION AVOIDANCE. AUTOMATIC EMERGENCY BRAKING WARNING LIGHT BLINKING This bulletin has been amended. See AMENDMENT HISTORY on the last page. Please discard previous versions of this bulletin.
ITB13-008D2023-04-04. Service bulletin. POWER TRAIN:AXLE HUBS. CLICKING NOISE FROM FRONT OR REAR AXLE DURING TAKE-OFF/ACCELERATION This bulletin has been amended. See AMENDMENT HISTORY on the last page. Please discard previous versions of this bulletin.
ITB10-074B2023-04-04. Service bulletin. SERVICE BRAKES. ABS/VDC CAN DIAGNOSIS INFORMATION This bulletin has been amended. See AMENDMENT HISTORY on the last page. Please discard previous versions of this bulletin.
ITB20-006C2023-03-07. Service bulletin. VISIBILITY; STRUCTURE. WINDSHIELD WIPER BLADE PERFORMANCE/DIAGNOSIS SERVICE INFORMATION This bulletin has been amended. See AMENDMENT HISTORY on the last page. Please discard previous versions of this bulletin.
ITB13-007H2023-03-07. Service bulletin. VISIBILITY; STRUCTURE. REMOVING FOREIGN MATERIAL FROM THE WINDOW GLASS This bulletin has been amended. See AMENDMENT HISTORY on the last page. Please discard previous versions of this bulletin.
ITB10-067C2023-03-07. Service bulletin. WHEELS. WHEEL BEARING COLLISION DAMAGE This bulletin has been amended. See AMENDMENT HISTORY on the last page. Please discard previous versions of this bulletin.
ITB09-039J2023-03-07. Service bulletin. VISIBILITY; STRUCTURE. WINDSHIELD CRACKING This bulletin has been amended. See AMENDMENT HISTORY on the last page. Please discard previous versions of this bulletin.
ITB19-042D2023-02-18. Service bulletin. ELECTRICAL SYSTEM. AV CONTROL UNIT REPLACEMENT PROCESS This bulletin has been amended. See AMENDMENT HISTORY on the last page. Please discard previous versions of this bulletin.
ITB19-030C2023-02-18. Service bulletin. ELECTRICAL SYSTEM. AV CONTROL UNIT INFORMATION This bulletin has been amended. See AMENDMENT HISTORY on the last page. Discard all previous versions of this bulletin.

The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.