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Service bulletins for the 2018 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.

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

By type

By component

By trouble code

Bulletins, newest first
ITB17-042E2022-03-12. Service bulletin. ENGINE AND ENGINE COOLING. DTC P0456 CAUSED BY EVAP LEAK AT VENT CONTROL VALVE O-RING This bulletin has been amended. See AMENDMENT HISTORY on the last page. Please discard previous versions of this bulletin.
ITB13-052D2022-03-12. Service bulletin. ELECTRICAL SYSTEM:BODY CONTROL MODULE/BCM; ELECTRICAL SYSTEM. INTELLIGENT KEY NOT DETECTED / ENGINE WILL NOT START This bulletin has been amended. See AMENDMENT HISTORY on the last page. Please discard previous versions of this bulletin.
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.
PC838 - R1912 Ca2021-10-07. Service bulletin. VISIBILITY. R1912 Rear Visibility System 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 (R1912). If the VIN displays QA campaign ID PC838, 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. PC838. 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.
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.
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.
ITB17-055B2021-07-10. Service bulletin. ELECTRICAL SYSTEM. INFINITI; INTELLIGENT KEY IDENTIFICATION AND REGISTRATION TIPS This bulletin has been amended. See AMENDMENT HISTORY on the last page. Discard all 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.
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.
ITB21-0072021-05-07. Service bulletin. ENGINE AND ENGINE COOLING. MIL ON WITH DTC P062F AND/OR P0603 STORED IF YOU CONFIRM The MIL is ON and DTC P062F (EEPROM) and/or P0603 (ECM BACK UP/CIRCUIT) is stored, And The customer stated the vehicle was recently started after sitting for an extended period of time (i.e., the battery voltage was low while attempting to start the engine). ACTION 1. Test the vehicle’s 12 volt battery using the Midtronics DSS-5000. Recharge or replace the battery if necessary. 2. Erase all DTCs.
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.
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.
ITB17-042D2021-04-13. Service bulletin. ENGINE AND ENGINE COOLING. INFINITI; DTC P0456 CAUSED BY EVAP LEAK AT VENT CONTROL VALVE O-RING This bulletin has been amended. See AMENDMENT HISTORY on the last page. Please discard previous versions of this bulletin.
ITB17-055A2021-04-08. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM. INFINITI; INTELLIGENT KEY IDENTIFICATION AND REGISTRATION TIPS 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.