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Service bulletins for the 2014 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.

256 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
ITB12-011R2026-04-29. Service bulletin. ELECTRICAL SYSTEM. TELEMATICS SERVICE INFORMATION See ITB19-029 for models built after those listed above for a different Service Procedure. SERVICE INFORMATION The Applied Vehicles are equipped with a wireless communication device called a Telematics Communication Unit (TCU). With an active Infiniti Connection® or Infiniti InTouch Services™, the TCU communicates with the Infiniti Data Center to provide various security and convenience services. This bulletin contains important service procedures that must be performed properly in order to set-up and maintain the telematics system for the Applied Vehicles. Ø A table has been provided on the next page that lists the model and year specific steps required to successfully configure a TCU after it has been replaced. Ø A check OFF sheet has been provided on page 21 to print and check off steps as they are performed. Please staple the completed Check OFF Sheet to the repair order.
ITB13-052E2024-06-28. Service bulletin. 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.
ITB13-006D2024-06-28. 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.
ITB10-029C2024-06-14. 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.
ITB12-011Q2024-02-08. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT:ELECTRICAL:NAVIGATIONAL SYSTEM(GLOBAL POSITIONING SYSTEM). TELEMATICS SERVICE INFORMATION This bulletin has been amended. See AMENDMENT HISTORY on the last page. Please discard previous versions of this bulletin.
ITB22-0402022-12-06. Service bulletin. COMMUNICATION:MANUFACTURER TELEMATICS; ELECTRICAL SYSTEM. 3G TELEMATICS HARDWARE DEACTIVATION 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). AT&T discontinued its U.S. 3G network coverage on February 22, 2022. As a result, automakers that utilize AT&T’s 3G network connection, including Nissan Group, have had connectivity services affected. INFINITI Connection with InTouch™ Services are no longer available on the APPLIED VEHICLES listed above.
ITB19-024B2022-05-20. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE; AIR BAGS:SENSOR:OCCUPANT CLASSIFICATION; AIR BAGS. DTC B00A0-00 STORED This bulletin has been amended. See AMENDMENT HISTORY on the last page. Please discard previous versions of this bulletin.
ITB22-0062022-03-12. Service bulletin. ELECTRICAL SYSTEM; ELECTRICAL SYSTEM:12V/24V/48V BATTERY. BATTERY QUICK CHARGE NOTICE SERVICE INFORMATION When charging the vehicle’s 12 volt battery with the high amperage quick charge function, the ignition should never be ON, or turned ON, while charging. Attempting to start the vehicle, or turning the ignition ON, while using the high amperage quick charge could potentially damage the fuel pump control module. • Only turn the ignition ON when either the ESM or a technical service bulletin service procedure states to do so, and only while using a battery maintainer or smart charger set to reflash mode, or a similar setting. • Battery voltage should not exceed 16V during a reprograming operation.
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.
ITB13-006C2022-03-12. 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.
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.
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.
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.
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.
ITB15034B2021-05-10. Service bulletin. ELECTRICAL SYSTEM. INTRODUCTION Infiniti is conducting a Voluntary Service Campaign on certain specific 2014-2015 Q50 Hybrid cold state vehicles (listed below) to replace the 12 volt battery. This service will be performed at no cost to the customer for parts or labor. This campaign will apply to vehicles in the following States, only: Colorado, Connecticut, Idaho, Illinois, Indiana, Iowa, Kansas, Maine, Massachusetts, Michigan, Minnesota, Montana, Nebraska, Nevada, New Hampshire, New York, North Dakota, Ohio, Pennsylvania, South Dakota, Utah, Vermont, Washington, Wisconsin, Wyoming. IDENTIFICATION NUMBER Infiniti has assigned identification number P5326 to this campaign. This number must appear on all communications and documentation of any nature dealing with this campaign. See this bulletin for further detail.
P5326B2021-05-10. Service bulletin. ELECTRICAL SYSTEM. This announcement has been updated to include New battery replacement instructions due to the parts shortage New Claims Information
P5323B2021-05-10. Service bulletin. ELECTRICAL SYSTEM. This announcement has been updated to include New battery replacement instructions due to the parts shortage New Claims Information
P5323A2021-05-10. Service bulletin. ELECTRICAL SYSTEM. 12-volt batteries necessary for replacement under P5323 or P5326 are currently on back order. We expect additional parts to arrive in late April.
P5326A2021-05-10. Service bulletin. ELECTRICAL SYSTEM. 12-volt batteries necessary for replacement under P5323 or P5326 are currently on back order. We expect additional parts to arrive in late April.
ITB160092021-05-10. Service bulletin. ELECTRICAL SYSTEM. SERVICE INFORMATION The function to detect the last item to trigger the vehicles theft alarm system can now be accessed with CONSULT-III plus (C-III plus). This function can be accessed by selecting: * Diagnosis (All Systems) or Diagnosis (One System). Then * BCM Then * THEFT ALM Then * Work Support Then * THEFT ALM TRG See this bulletin for further 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.
P5326OL2021-05-10. Service bulletin. ELECTRICAL SYSTEM; STEERING. Infiniti is conducting a Voluntary Service Campaign on certain specific Model Year 2014 - 2015 Q50 Hybrid cold state vehicles (listed below) to reprogram the Direct Adaptive Steering (DAST) and replace the 12 volt battery.
P53232021-05-10. Service bulletin. ELECTRICAL SYSTEM; STEERING. Infiniti is conducting a Voluntary Service Campaign on certain specific Model Year 2014 - 2015 Q50 Hybrid cold state vehicles (listed below) to reprogram the Direct Adaptive Steering (DAST) and replace the 12 volt battery.
ITB11042D2021-05-10. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. IF YOU CONFIRM The customer states HomeLink will not operate or has improper operation. ACTIONS 1. To significantly reduce unnecessary repairs, make sure: a. The vehicle is not in "Transit Mode" (if equipped). - Not in Transit Mode: With the turn signal switch is in the OFF (center) position, turn the ignition from OFF to ON. If the turn signal indicators stay OFF (do not illuminate), the vehicle is not in Transit Mode. b. The "Extended Storage Switch" (if equipped) is in the "Customer Delivery" position (pushed in). - The Extended Storage Switch is located on the fuse block that is located in the interior of the vehicle. 2. Confirm the customer is familiar with the HomeLink programming procedure located in the vehicle?s owner?s manual. 3. Test HomeLink operation with special tool HomeLink Transmitter Tester J-41540. See this bulletin for further detail.
ITB150272021-05-10. Service bulletin. ELECTRICAL SYSTEM; POWER TRAIN. SERVICE INFORMATION If the glove box is removed for any reason (for example, installing an accessory kick plate, replacing an in-cabin microfilter, etc.), verify the trunk release power cancel switch operates normally after installing the glove box. See this bulletin for further detail.

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