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Service bulletins for the 2016 Infiniti Q50

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.

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

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Only bulletins with component: Electrical system are shown. Show all

Bulletins, newest first
ITB16-012D2021-07-10. Service bulletin. ELECTRICAL SYSTEM. INTELLIGENT KEY BUTTONS INOPERATIVE BUT REQUEST SWITCHES WORK This bulletin has been amended. See AMENDMENT HISTORY on the last page. Please discard previous versions of this bulletin.
ITB15-026D2021-07-10. Service bulletin. ELECTRICAL SYSTEM. SIGNAL TECH-II INTELLIGENT KEY BATTERY TEST AND SIGNAL CHECK This bulletin has been amended. See AMENDMENT HISTORY on the last page. Please discard previous versions of this bulletin.
ITB13026E2021-05-10. Service bulletin. ELECTRICAL SYSTEM:ADAS:AUTONOMOUS/SELF DRIVING:SOFTWARE; ENGINE AND ENGINE COOLING:ENGINE:OIL/LUBRICATION:FILTER/SCREEN. SERVICE INFORMATION If the Display Control Unit (DCU) needs to be replaced on an Applied Vehicle for any reason, follow the steps in the Service Procedure of this bulletin. See this bulletin for further detail.
PC4522021-05-10. Service bulletin. ELECTRICAL SYSTEM. Beginning February 29th, owners of the affected Infiniti vehicles equipped with Telematics Control Units (TCU) will receive a letter notification explaining how their vehicle?s Infiniti Connection features will be affected by AT&T?s planned discontinuation of the 2G cellular network.
ITB160082021-05-10. Service bulletin. ELECTRICAL SYSTEM. IF YOU CONFIRM The MIL is "ON" with DTC P0603 (ECM BACK UP/CIRCUIT). ACTION 1. Confirm that the battery voltage is 11 volts, or more, with the ignition ON (engine OFF, not running). 2. Erase DTC 3. Perform DTC confirmation steps in the Service Procedure. 4. Confirm 1st trip DTC P0603 is not stored. NOTE: P0603 is often the result of low battery voltage, discharged battery or battery terminal disconnections. Please see this bulletin for furtner details.
ITB160052021-05-10. Service bulletin. ELECTRICAL SYSTEM. SERVICE INFORMATION The Intelligent Keys used on the various Infiniti vehicles may not be interchangeable between models and years. See this bulletin for further detail.
ITB160032021-05-10. Service bulletin. ELECTRICAL SYSTEM. SERVICE INFORMATION Whenever all Intelligent Keys of an APPLIED VEHICLE are lost AND the BCM is in Transit Mode, the BCM does not need to be replaced when replacing the lost Intelligent Keys. When all of the following conditions of an APPLIED VEHICLE are verified: - The BCM is in Transit Mode. - The BCM will not respond to CONSULT-III plus (C-III plus). It does not show up on System Call. - All Intelligent Keys are lost. DO NOT replace the BCM or ECM when replacing the lost Intelligent Keys. The procedure in this bulletin will get the existing BCM out of Transit Mode. See this bulletin for further detail.
ITB140202021-05-10. Service bulletin. ELECTRICAL SYSTEM:WIRING; EQUIPMENT. SERVICE INFORMATION Warranty claims coding for repairing wiring harnesses for all Infiniti vehicles has changed. This bulletin gives an outline of the retailer technician?s responsibilities in assisting the retailer claims administrator to properly code a harness repair. Failure to provide correct information may result in claims suspension or rejection. See this bulletin for further detail.
ITB18-010C2021-05-09. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM. SERVICE INFORMATION FOR DTCS B2EF0 AND B130C This bulletin has been amended. See AMENDMENT HISTORY on the last page. Please discard previous versions of this bulletin.
ITB16-012C2021-05-09. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. INTELLIGENT KEY BUTTONS INOPERATIVE BUT REQUEST SWITCHES WORK This bulletin has been amended. See AMENDMENT HISTORY on the last page. Please discard previous versions of this bulletin.
ITB13-052C2021-05-08. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. INTELLIGENT KEY NOT DETECTED / ENGINE WILL NOT START This bulletin has been amended to update the Applied Vehicles. No other changes were made. Please discard previous versions of this bulletin.
ITB16-003A2021-04-14. Service bulletin. ELECTRICAL SYSTEM. INFINITI; REPLACING LOST INTELLIGENT KEYS FOR APPLICABLE 2016 MODEL YEAR VEHICLES This bulletin has been amended. See AMENDMENT HISTORY on the last page. Please discard previous versions of this bulletin.
ITB15-026C2021-04-14. Service bulletin. ELECTRICAL SYSTEM. INFINITI; SIGNAL TECH-II INTELLIGENT KEY BATTERY TEST AND SIGNAL CHECK This bulletin has been amended. See AMENDMENT HISTORY on the last page. Please discard previous versions of this bulletin.
ITB15-023A2021-04-14. Service bulletin. ELECTRICAL SYSTEM. 2016 INFINITI; REGISTRATION OF NEW I-KEYS WHEN ORIGINALS ARE MISSING This bulletin has been amended. See AMENDMENT HISTORY on the last page. Please discard previous versions of this bulletin.
ITB19-024A2021-04-13. Service bulletin. ELECTRICAL SYSTEM. DTC B00A0-00 STORED This bulletin has been amended. See AMENDMENT HISTORY on the last page. Please discard previous versions of this bulletin.
ITB17-005A2021-04-08. Service bulletin. ELECTRICAL SYSTEM. BLUETOOTH, USB, AND AUX FUNCTION DIAGNOSTIC TOOL This bulletin has been amended. See AMENDMENT HISTORY on page 3. Please discard previous versions of this bulletin.
ITB16-006A2021-04-08. Service bulletin. ELECTRICAL SYSTEM. INFINITI; FRONT SONAR PARKING SENSOR SERVICE INFORMATION This bulletin has been amended. See AMENDMENT HISTORY on the last page. Please discard previous versions of this bulletin.
ITB13-026L2021-04-08. Service bulletin. ELECTRICAL SYSTEM. 2014-2017 INFINITI; DISPLAY CONTROL UNIT REPLACEMENT This bulletin has been amended. See AMENDMENT HISTORY on the last page. Please discard previous versions of this bulletin.
ITB12-011P2021-04-08. Service bulletin. EQUIPMENT; EQUIPMENT ADAPTIVE/MOBILITY; ELECTRICAL SYSTEM. TELEMATICS SERVICE INFORMATION This bulletin has been amended. See AMENDMENT HISTORY on the last page. Please discard previous versions of this bulletin.
ITB18-040d2021-03-09. Service bulletin. ELECTRICAL SYSTEM. SOFTWARE UPDATES FOR INFOTAINMENT ISSUES This bulletin has been amended. See AMENDMENT HISTORY on the last page. Discard all previous versions of this bulletin.
ITB20-023a2021-03-06. Service bulletin. ELECTRICAL SYSTEM; FORWARD COLLISION AVOIDANCE; EQUIPMENT. LANE CAMERA AIMING VEHICLE REFERENCE VALUES NOT IN ESM This bulletin has been amended. See AMENDMENT HISTORY on the last page. Please discard previous versions of this bulletin.
ITB19-005a2021-03-06. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL; ELECTRICAL SYSTEM. CLOCK, AUDIO, HVAC OR NAVIGATION SETTINGS INTERMITTENTLY CHANGE ON THEIR OWN This bulletin has been amended. See AMENDMENT HISTORY on the last page. Please discard previous versions of this bulletin.
EXPIRATION NOTIF2021-01-08. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. Expiration Notification - 2G Telematics Hardware Replacement Campaign Summary In 2016, INFINITI launched a Client Satisfaction Initiative (CSI) that provided clients with an opportunity to update the Telematics Control Unit (TCU) in vehicles equipped with a TCU designed to connect to the 2G cellular network. AT&T stopped accepting enrollments on the 2G cellular network, and discontinued its 2G cellular network coverage on December 31, 2016. Once the 2G cellular network was discontinued, there was no access to the INFINITI Connection features without a TCU hardware upgrade. Because AT&T will shut down its 3G network on December 31, 2021, INFINITI is discontinuing this Client Satisfaction Initiative to upgrade from 2G to 3G compatible hardware effective immediately. 3G services will continue to be provided until December 31, 2021. Vehicles equipped with a TCU that connects to the 3G cellular network will have no access to the INFINITI Connection features, including Emergency Calling and Automatic Collision Notification after that time. What Retailers Should Do Service Comm will deactivate PC451, PC452 and PC454 on any VINs on December 22, 2020. No further retailer action is required.
ITB20-0232020-10-08. Service bulletin. ELECTRICAL SYSTEM; LANE DEPARTURE. LANE CAMERA AIMING VEHICLE REFERENCE VALUES NOT IN ESM SERVICE INFORMATION If the lane camera requires aiming, the values in Table A on page 4 must be used. • For all other models, consult the Electronic Service Manual (ESM). The following CONSULT-III plus (C-III plus) figures and steps are only provided to indicate where the VEHICLE REFERENCE VALUE from Table A is to be entered. The entire camera aiming procedure must be followed to complete the aiming procedure. • Refer to the Electronic ESM section: CRUISE CONTROL & DRIVER ASSISTANCE > DRIVER ASSISTANCE SYSTEM > DRIVER ASSISTANCE SYSTEM > BASIC INSPECTION > LANE CAMERA UNIT > CAMERA AIMING ADJUSTMENT. 1. Turn the ignition ON. 2. From the C-III plus home screen, select Diagnosis (One System).
ITB19-027a2020-02-08. Service bulletin. ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM. MIL ON WITH DTC P0087, P0101, P0448, OR P2008, VEHICLES REGISTERED OUTSIDE OF CALIFORNIA This bulletin has been amended. See AMENDMENT HISTORY on the last page. Please discard previous versions of this bulletin.

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