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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.

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

Bulletins, newest first
ITB18-040b2019-04-15. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. SOFTWARE UPDATES FOR INFOTAINMENT ISSUES This bulletin has been amended. Please see Amendment History on the last page. Please discard previous versions of this bulletin.
ITB17-017a2019-03-25. Service bulletin. ELECTRICAL SYSTEM. MIL ON WITH DTC P0101, P010B, AND/OR P0106 This bulletin has been amended. See AMENDMENT HISTORY on the last page. Please discard previous versions of this bulletin.
ITB18-040a2019-02-25. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE; EQUIPMENT. INFINITI; SOFTWARE UPDATES FOR INFOTAINMENT ISSUES This bulletin has been amended. Please see Amendment History on the last page. Please discard previous versions of this bulletin.
ITB18-0402019-02-25. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE; EQUIPMENT. INFINITI; SOFTWARE UPDATES FOR INFOTAINMENT ISSUES IF YOU CONFIRM Any one or a combination of the following on an applied vehicle: - Reverse camera is blank (vehicles manufactured before May 1, 2018) - Reverse camera remains ON when in Drive (vehicles manufactured before May 1, 2018) - Average fuel economy displays 99.9 MPG - Display screen flickers at higher ambient interior temperatures - SXM Info Apps (Weather, Stocks, Fuel Prices) inoperative ACTION 1. Refer to page 4, step 8 in the SERVICE PROCEDURE to confirm an update applies to the Display Control Unit (DCU) of the vehicle being worked on. - Confirmation is determined by comparing the DCU part number with those listed in Table on page 5. 2. If this bulletin applies, update the DCU software. - See REQUIRED SPECIAL TOOL on page 2. NOTE: The updated software resolves the items above along with improving software stability.
ITB19-0012019-02-19. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. CHASSIS CONTROL MODULE DTC INFORMATION SERVICE INFORMATION If one or more of the following Chassis Control DTCs are stored: - C1BA0-00 - (CHASSIS CONTROL BRAKE SYSTEM) - C1B90-00 - (DIRECT ADAPTIVE STEERING SYSTEM) - C1B92-00 - (BRAKE CONTROL SYSTEM) - C1B93-00 - (ENGINE/HEV SYSTEM) - C1B94-00 - (TRANSMISSION SYSTEM) And One or more additional DTCs, other than those above, are also stored in a control unit other than the Chassis Control Module. - Perform the diagnostic/repair procedures for the additional DTCs of the other control unit FIRST. - Refer to the Electronic Service Manual (ESM) for DTC specific diagnostic information. Do not replace the CHASSIS CONTROL MODULE (CONTROLLER ASSY-IDM) if additional DTCs are present.
ITB15-026b2018-12-03. 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.
ITB18-0212018-06-18. Service bulletin. STEERING; ELECTRICAL SYSTEM. DAST CALIBRATION (MODE1) INCOMPLETE OR C13E9-00/C13EB-00 UNABLE TO ERASE This bulletin applies only to vehicles equipped with Direct Adaptive Steering (DAST). SERVICE INFORMATION This bulletin has information for two services for which a technician may need additional help: - While performing DAST CALIBRATION (MODE1), the calibration may stop or will not start. - DTC C13E9-00 (BOOTING ANGLE PROCESSING) and C13EB-00 (BOOTING ANGLE PROCESSING) are stored and cannot be erased. The above conditions may indicate that DAST CALIBRATION (MODE1) was not performed correctly or was not completed correctly. Use the SERVICE PROCEDURE in this bulletin as an aid to correctly perform and complete DAST CALIBRATION MODE 1. NOTE: - The SERVICE PROCEDURE in this bulletin does not contain all of the required steps. - The Electronic Service Manual (ESM) must be used together with this bulletin. - This bulletin contains additional clarification as an aid to perform DAST CALIBRATION MODE 1.
ITB12-011k2018-05-14. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE. TELEMATICS SERVICE INFORMATION This bulletin has been amended. Changes have been made throughout. It is necessary to read the revised procedure(s) in entirety to properly perform the action(s). Please discard previous versions of this bulletin.
ITB18-010a2018-05-07. Service bulletin. ELECTRICAL SYSTEM. INFINITI; SERVICE INFORMATION FOR DTCS B2EF0 AND B130C This bulletin applies only to vehicles equipped with Telematics. This bulletin has been amended to correct a DTC listed in the SERVICE INFORMATION. No other changes have been made. Discard all previous versions of this bulletin.
ITB12-011j2018-02-21. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE; ELECTRICAL SYSTEM; EQUIPMENT:ELECTRICAL:NAVIGATIONAL SYSTEM(GLOBAL POSITIONING SYSTEM). TELEMATICS SERVICE INFORMATION This bulletin has been amended. A correction was made to the Service Procedure on page 15. No other changes were made. Please discard previous versions of this bulletin.
ITB17-0582018-01-29. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE. INTRODUCTION Infiniti is conducting this voluntary emission recall campaign on certain specific model year 2016-2018 Q50 and 2017 Q60 vehicles. The Engine Control Module (ECM) will be reprogrammed so that in the event of an automatic transmission diagnostic issue, the diagnosis signals will be communicated properly and a Malfunction Indicator Light (MIL) will be properly illuminated to notify the driver. This service will be performed at no charge to the customer for parts or labor. IDENTIFICATION NUMBER Infiniti has assigned identification number R1726 to this campaign. This number must appear on all communication and documentation of any nature dealing with this campaign. DEALER RESPONSIBILITY It is the dealer?s responsibility to check Service Comm or Dealer Business Systems (DBS) National Service History for the campaign status on each vehicle falling within the range of this voluntary emissions recall which for any reason enters the service department. This includes vehicles purchased from private parties or presented by transient (tourist) owners and vehicles in a dealer?s inventory.
ITB13-026g2018-01-29. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM. DISPLAY CONTROL UNIT REPLACEMENT This bulletin has been amended. The Applied Vehicles section and Part 1 of the Service Procedure have been revised. No other changes have been made. Please discard previous versions of this bulletin.
ITB09-015h2017-10-15. Service bulletin. ELECTRICAL SYSTEM:12V/24V/48V BATTERY. 12 VOLT BATTERY STORAGE AND MAINTENANCE FOR NEW VEHICLES IN RETAILER INVENTORY This bulletin has been amended throughout. Please 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.