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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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By component

By trouble code

Bulletins, newest first
ITB13-044J2022-03-12. Service bulletin. FUEL SYSTEM, OTHER; ENGINE AND ENGINE COOLING. EVAP LEAK DTC P0442, P0455, P0456 INFORMATION This bulletin has been amended. See AMENDMENT HISTORY on the last page. Please discard previous versions of this bulletin.
ITB13-006C2022-03-12. Service bulletin. ELECTRICAL SYSTEM. CAN COMMUNICATION – NETWORK DIAGNOSTIC FLOW CHART This bulletin has been amended. See AMENDMENT HISTORY on the last page. Please discard previous versions of this bulletin.
ITB19-013C2022-02-10. Service bulletin. LANE DEPARTURE: ASSIST; LANE DEPARTURE: BLIND SPOT DETECTION; ELECTRICAL SYSTEM. AEB WARNING LIGHT BLINKING This bulletin has been amended. See AMENDMENT HISTORY on the last page. Please discard previous versions of this bulletin.
ITB14-011F2022-02-10. Service bulletin. ELECTRICAL SYSTEM; ENGINE. REMOTE ENGINE START NOT WORKING This bulletin has been amended. See AMENDMENT HISTORY on the last page. Please discard previous versions of this bulletin.
ITB10-029B2022-02-09. Service bulletin. ELECTRICAL SYSTEM. CAN COMMUNICATION CODES – DIAGNOSTIC TIPS AND GUIDELINES This bulletin has been amended. See AMENDMENT HISTORY on the last page. Please discard previous versions of this bulletin.
NTB03-074P2022-01-08. 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.
ITB17-033C2022-01-08. Service bulletin. EXTERIOR LIGHTING. CLEANING FRONT OR REAR COMBINATION LAMP ASSEMBLIES This bulletin has been amended. See AMENDMENT HISTORY on the last page. Please discard previous versions of this bulletin.
ITB03-051P2022-01-08. 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.
PC836 - R1717 Ca2021-10-07. Service bulletin. FUEL SYSTEM, GASOLINE. R1717 Fuel Pump Campaign Quality Review ***** Retailer Announcement ***** INFINITI is committed to the safety, security and satisfaction of our clients and is conducting a quality review of specific repairs for a previously completed campaign (R1717). If the VIN displays QA campaign ID PC836, retailers should perform the procedure attached to this communication even if the National Service History indicates the remedy action was previously performed for the vehicle. VINs identified with this QA campaign ID are being inspected to ensure the recall remedy was performed and documented in accordance with INFINITI’s quality standards. ***** What Retailers Should Do ***** PLEASE FOLLOW THE ATTACHED PROCEDURE: 1. Verify if vehicles are affected by this quality action using Service Comm or DBS National Service History – Open Campaigns I.D. PC836. 2. Retailers should complete this action on both retailed vehicles and previously owned vehicles within retailer inventory. • Retailers should follow all stop sale and do not drive, loan, sell, or trade instructions for campaigns. 3. Retailers will need to file the appropriate claim using applicable Op Code information in the repair procedure attached to this announcement to close the campaign. NOTE: Parts replaced under this activity will be placed on parts return. Monitor the Warranty Parts Return Website located at NNAnet.com for notifications.
PC835 - R1606 Ca2021-10-07. Service bulletin. SEATS; AIR BAGS; ELECTRICAL SYSTEM. R1606 Occupant Classification System (OCS) Campaign Quality Review ***** Retailer Announcement ***** INFINITI is committed to the safety, security and satisfaction of our clients and is conducting a quality review of specific repairs for a previously completed campaign (R1606). If the VIN displays QA campaign ID PC835, retailers should perform the procedure attached to this communication even if the National Service History indicates the remedy action was previously performed for the vehicle. VINs identified with this QA campaign ID are being inspected to ensure the recall remedy was performed and documented in accordance with INFINITI’s quality standards. ***** What Retailers Should Do ***** PLEASE FOLLOW THE ATTACHED PROCEDURE: 1. Verify if vehicles are affected by this quality action using Service Comm or DBS National Service History – Open Campaigns I.D. PC835. 2. Retailers should complete this action on both retailed vehicles and previously owned vehicles within retailer inventory. • Retailers should follow all stop sale and do not drive, loan, sell, or trade instructions for campaigns. 3. Retailers will need to file the appropriate claim using applicable Op Code information in the repair procedure attached to this announcement to close the campaign. NOTE: Parts replaced under this activity will be placed on parts return. Monitor the Warranty Parts Return Website located at NNAnet.com for notifications.
PC832 - P8314 Ca2021-10-07. Service bulletin. FUEL SYSTEM, GASOLINE. P8314 Fuel Hose Campaign Quality Review ***** Retailer Announcement ***** INFINITI is committed to the safety, security and satisfaction of our clients and is conducting a quality review of specific repairs for a previously completed campaign (P8314). If the VIN displays QA campaign ID PC832, retailers should perform the procedure attached to this communication even if the National Service History indicates the remedy action was previously performed for the vehicle. VINs identified with this QA campaign ID are being inspected to ensure the service campaign remedy was performed and documented in accordance with INFINITI’s quality standards. ***** What Retailers Should Do ***** PLEASE FOLLOW THE ATTACHED PROCEDURE: 1. Verify if vehicles are affected by this quality action using Service Comm or DBS National Service History – Open Campaigns I.D. PC832. 2. Retailers should complete this action on both retailed vehicles and previously owned vehicles within retailer inventory. 3. Retailers will need to file the appropriate claim using applicable Op Code information in the repair procedure attached to this announcement to close the campaign. NOTE: Parts replaced under this activity will be placed on parts return. Monitor the Warranty Parts Return Website located at NNAnet.com for notifications. ***** Retailer Responsibility ***** It is the retailer’s responsibility to check Service Comm or DBS National Service History - Open Campaign using the appropriate campaign I.D. for the status of each vehicle currently in retailer inventory or entering the service department. This includes vehicles purchased from private parties or presented by transient (tourist) owners. If a VIN subject to this quality action was traded to another retailer, please notify the affected retailer to have this quality action and associated campaign(s) completed.
ITB20-016A2021-09-08. Service bulletin. ENGINE AND ENGINE COOLING; EQUIPMENT; EQUIPMENT ADAPTIVE/MOBILITY. COOLANT RESIDUE AT WATER PUMP This bulletin has been amended. See AMENDMENT HISTORY on the last page. Please discard previous versions of this bulletin.
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.
ITB13-008B2021-07-10. Service bulletin. POWER TRAIN. 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.
ITB11021B2021-05-10. Service bulletin. EQUIPMENT; TIRES. SERVICE INFORMATION Temporary tire Flat Spotting is common on New Dealer In-Stock vehicles that have not been occasionally moved. Flat Spotting can occur after the vehicle has been parked (not moved) for a few days, or longer. In most cases it is temporary. In extreme cases it can be permanent. Vehicles should be moved every 30 days, in one direction only, enough to rotate the tires 90° (see Figure 1). Moving vehicles as shown in this bulletin will prevent tire Flat Spotting. See this bulletin for further detail.
ITB160162021-05-10. Service bulletin. AIR BAGS; EQUIPMENT. SERVICE INFORMATION Nissan is issuing this Technical Service Bulletin to clarify that a change has been made for the logic that controls the Occupant Classification System (OCS) and 'passenger airbag indicator' (PABI), as described in the Owner?s Manual. This TSB applies only to vehicles using the 2-sensor OCS. Those changes are: * PABI light is ON with an empty front passenger seat. Please see this bulletin for further details.
ITB09041A2021-05-10. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY; EQUIPMENT:APPLIANCE:AIR CONDITIONER. IF YOU CONFIRM A refrigerant leak at a refrigerant pipe/hose joint location, ACTIONS 1. Inspect the metal surfaces of the pipe/hose joint for damage or contamination. NOTE: Do not replace a refrigerant pipe, hose, or other A/C component if an o-ring seal will solve the leak incident, if it should occur. 2. If no damage is found to the joint metal surfaces, replace the O-ring seal. See this bulletin for further detail.
ITB09063B2021-05-10. Service bulletin. EQUIPMENT:OTHER:LABELS; FORWARD COLLISION AVOIDANCE. SERVICE INFORMATION Because of collision damage or other vehicle repair, a replacement "Certification Label" or "VIN Plate / Label" may be needed. These items may be available from Infiniti by request if certain criteria are met. This bulletinlists the criteria and provides an application form for such replacements. See this bulletin for further detail.
ITB15021A2021-05-10. Service bulletin. EQUIPMENT; FUEL SYSTEM, GASOLINE:STORAGE:TANK ASSEMBLY:FILLER PIPE AND CAP. SERVICE INFORMATION If the clip for the fuel filler cap tether becomes lost or is detached for any reason, it is no longer necessary to replace the fuel filler cap. The clip or "pin" is now available as a separate service part. NOTE - Do not replace the fuel filler cap if only the pin is needed. See this bulletin for further detail.
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.
ITB03051J2021-05-10. Service bulletin. EXTERIOR LIGHTING. SERVICE INFORMATION Occasionally customers may notice water vapor or fog in the headlamps. The information, illustrations, and flow chart in this bulletin are provided to help you in determining if an incident for water/condensation in the headlamps is normal or not. Infiniti?s new vehicle limited warranty does not cover physically damaged (cracked or broken) headlamps. All current headlamp assemblies are vented to the atmosphere (not sealed). - This is necessary to allow for expansion and contraction of air from temperature "variations" (warmer or colder) without damage to the headlamp. - Moisture in the air sometimes "travels" into and out of the headlamp assembly through these vents. - Certain environmental conditions may cause moisture to condense. - The fogging/cloudiness should disappear over time when the headlamp is in a dry environment. See this bulletin for further detail.
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.
ITB160062021-05-10. Service bulletin. FORWARD COLLISION AVOIDANCE: SENSING SYSTEM: SONAR/ULTRASONIC; EQUIPMENT. SERVICE INFORMATION When diagnosing the front sonar parking sensor for potentially unwanted activation (e.g. sonar activates with no obstacle ahead), inspect the front license plate, front license plate frame and if equipped, the front license plate bracket. See page 2 for example photos. The front sonar parking sensor may activate if: The front license plate is bent outward from its bracket (there is a gap between the license plate and the bracket) OR the front license plate frame is bent or loose and is hanging outward, away from the license plate and/or bracket (there is a gap between the license plate frame and the license plate and/or bracket) OR the bracket is loose and is hanging outward, away from the bumper (there is a gap between the bracket and the bumper). If any of these conditions are found, correct it by removing the gap (straighten the license plate, straighten and/or secure the license plate frame, or secure the bracket, as it applies). - Retest the operation of the front sonar parking sensor. If the issue is not resolved, go to ASIST and the related Electronic Service Manual (ESM) for further diagnosis. See this bulletin for further detail.

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