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Service bulletins for the 2021 Infiniti QX50

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.

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

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Bulletins, newest first
REV 1 - PC839 202021-12-08. Service bulletin. ELECTRICAL SYSTEM. Wireless Apple CarPlay® Update Voluntary Service Campaign UPDATE October 18, 2021 Please discard earlier versions of this bulletin. The announcement from October 6, 2021 has been updated to highlight the following important information: • Retailers should ensure they are using the most recent version of the CONSULT III operating system. • Ensure that the technician has configured the audio/IT unit as instructed beginning with step 27 of the Technical Service Bulletin (TSB). • Retailers should assist every customer with (1) removing ALL paired phones,(2) pairing their phone with the vehicle again before they leave the dealership, and (3) verifying Wireless CarPlay is working for iPhone users (See page 2 of this announcement) • Ensure that YES is selected on the vehicle when prompted to deactivate Wi-Fi to use Wireless CarPlay (provide owners a copy of the instructions on page 6 of this announcement) Notify owners that some vehicles may have initial location accuracy concerns after the software update. This is not a unique issue for INFINITI and will self-correct within a few days.(see page 7) Please print a copy of the phone pairing instructions (page 6) for the owner to use with pairing other phones back to their vehicle.
PC839 2020-21 Q52021-12-08. Service bulletin. ELECTRICAL SYSTEM. Wireless Apple CarPlay® Update Voluntary Service Campaign ***** Campaign Summary ***** INFINITI is conducting a Client Service Initiative to provide a free Infotainment software update, which includes Wireless Apple CarPlay® until March 31, 2022. The update will bring the vehicle’s software to current production level, improve system overall performance, and enable you to use Apple CarPlay® wirelessly! For more information on Apple CarPlay®, please refer to: INFINITI Apple CarPlay® Features & FAQs INFINITI’s InTouch system is designed to improve the driving experience. Your vehicle is already equipped with Apple CarPlay® to enhance your iPhone user experience with iOS13 and later, but it currently requires a USB cord connection to your phone to use. The CarPlay® dashboard takes things you want to do with your iPhone while driving and puts them right on the vehicle’s built-in display, eliminating the need to remove the iPhone from your pocket or bag. ***** What Retailers Should Do ***** 1. Verify if vehicles are affected by this Voluntary Service Campaign using Service Comm or DBS National Service History – Open Campaign I.D. PC839 • New vehicles in retailer inventory can also be identified by using DBS (Sales-> Vehicle Inventory, and filter by Open Campaign). • Refer to IPSB 15-286 for additional information 2. Retailers should ensure any applicable vehicle has the latest AV control unit software installed, and use ITB21-022 to update the following software: • Enablement of Wireless Apple CarPlay® • Stability improvements and “bug” fixes 3. Retailers should submit the applicable warranty claim for the action performed so it can be closed on Service Comm and release the vehicle.
ITB21-0232021-11-08. Service bulletin. POWER TRAIN. TRANSFER ASSEMBLY SEAL REPLACEMENT FOR AWD FRONT DRIVE SHAFT REMOVAL SERVICE INFORMATION When removing the front passenger (RH) side drive shaft on an applied vehicle for any reason, transfer assembly drive shaft oil seal and dust cover seal replacement is required. Refer to the SERVICE PROCEDURE in this bulletin.
ITB21-022A2021-11-08. Service bulletin. ELECTRICAL SYSTEM. CLIENT SATISFACTION INITIATIVE 2020-2021 Q50, Q60, QX50, AND QX80; INFOTAINMENT SOFTWARE UPDATE AND WIRELESS CARPLAY CONFIGURATION This bulletin has been amended. See AMENDMENT HISTORY on the last page. Discard all previous versions of this bulletin.
ITB21-0222021-11-08. Service bulletin. ELECTRICAL SYSTEM. CLIENT SATISFACTION INITIATIVE 2020-2021 Q50, Q60, QX50, AND QX80; INFOTAINMENT SOFTWARE UPDATE AND WIRELESS CARPLAY CONFIGURATION SERVICE INFORMATION Infiniti is providing a free infotainment software update, including Wireless Apple CarPlay®, until March 31, 2022. This upgrade will bring the vehicle’s infotainment software up to current production level, improve system overall performance, and enable wireless use of current Apple CarPlay® features. RETAILER RESPONSIBILITY It is the retailer’s responsibility to check SERVICE COMM using Service Comm I.D. PC839 for the status on each vehicle falling within the range of this client satisfaction initiative which for any reason enters the service department. If a vehicle subject to this client satisfaction activity was part of a retailer trade, the letter associated with that vehicle should be forwarded to the appropriate retailer for upgrade completion.
ITB21-0212021-10-13. Service bulletin. STRUCTURE. REAR HATCH INOPERATIVE OR NOISE WHEN OPENING/CLOSING IF YOU CONFIRM The client states that either the rear hatch is inoperative, or the rear hatch closes after opening only a small amount, AND DTC B2426-23 SPINDLE SENSOR LH and/or DTC B2427-23 SPINDLE SENSOR RH is stored, AND/OR There is a growling type noise from the rear hatch area when opening/closing the rear hatch. • DTC B2426-23 SPINDLE SENSOR LH and/or DTC B2427-23 SPINDLE SENSOR RH may also be stored. NOTE: If any DTC other than B2426-23 and/or B2427-23 is stored, this bulletin does not apply. ACTION Replace ONLY the spindle unit that is confirmed to be setting one of the DTCs listed above and/or causing the growling noise. Do NOT replace both spindle units when diagnosis leads to replacement of only one. HINT: Rear hatch spindle units are not hydraulic systems. If a rear hatch spindle unit appears to be leaking, this is normal drainage of water (rain, car wash, condensation) and design intended water management. Do not replace spindle units for suspected leaking.
ITB21-0202021-10-13. Service bulletin. FUEL SYSTEM, GASOLINE. FUEL AND/OR OIL SMELL IS PRESENT WHEN THE VEHICLE IS PARKED IN A CLOSED GARAGE IF YOU CONFIRM The client states that a fuel and/or oil smell is present when the vehicle is parked in a closed garage, even though there are no fuel, oil, or EVAP leaks. ACTION Replace the rocker cover assembly and the PCV separator with those listed in the PARTS INFORMATION, and eliminate PCV hose 2. NOTE: PCV hose 2 (number 15 in Figure 1 on page 2) is no longer required with the parts listed in the PARTS NFORMATION.
ITB20-025B2021-08-06. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY:VEHICLE CONTROLS:BRAKING; ELECTRICAL SYSTEM; EQUIPMENT; EQUIPMENT ADAPTIVE/MOBILITY. DTC B2724-23 AND/OR C1B56-04 STORED, AND/OR RAB ERROR MESSAGE OR WARNING 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.
ITB17-001B2021-06-09. Service bulletin. POWER TRAIN. FLUID LEAK CAUSED BY TRANSFER ASSEMBLY RIGHT SIDE DRIVE SHAFT SEAL This bulletin has been amended. See AMENDMENT HISTORY on the last page. Please discard previous versions of this bulletin.
PC792 2021 QX502021-05-08. Service bulletin. SERVICE BRAKES. Maintenance Schedules Owner’s Manual Addendum Voluntary Service Campaign ***** Campaign Summary ***** INFINITI is providing owners of approximately 7,570 MY2021 INFINITI QX50 (J55) vehicles with a supplemental Owner’s Manual addendum booklet. INFINITI discovered the Owner’s Manual “Maintenance Schedules” section did not include ‘Replace brake fluid’ in the 30,000 miles/(48,000 km)/48 months service interval section. Clients will be asked to place the supplemental Owner’s Manual addendum booklet, which includes the updated maintenance schedule, inside the glove box. ***** What Retailers Should Do ***** • Verify if vehicles are affected by this Voluntary Service Campaign using Service Comm or DBS National Service History – Open Campaign I.D. PC792 • New vehicles in retailer inventory can also be identified by using DBS (Sales-> Vehicle Inventory, and filter by Open Campaign). • Refer to IPSB 15-286 for additional information • SERVICE COMM will only be active for vehicles in new vehicle retailer inventory. • If a retailer receives a supplemental Owner’s Manual addendum booklet for a vehicle they have retailed, currently have in their new vehicle or pre-owned inventory, or an INFINITI Courtesy Vehicle (ICV) Service, the retailer should either forward the owner’s manual addendum to the current owner or add the addendum to the glove box of any affected vehicle they currently control. • Owner’s Manual addendum booklets will be sent directly to affected retailers via United States Postal Service (USPS). They should arrive at retailers no later than March 29, 2021. • Additional addendums may be obtained, as needed, via the INFINITI Marketing Material Ordering site located under Dealer Operations in NNAnet beginning April 19, 2021. • Clients receiving this addendum booklet have been advised to insert this booklet into their glove box.
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.
ITB19-029B2021-05-07. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. TELEMATICS (IVC) SERVICE INFORMATION This bulletin has been amended. See AMENDMENT HISTORY on the last page. Discard all previous versions of this bulletin.
ITB20-021B2021-04-13. Service bulletin. ELECTRICAL SYSTEM. SOFTWARE UPDATE FOR INFOTAINMENT ISSUES 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.
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.
ITB21-0022021-03-06. Service bulletin. EQUIPMENT; POWER TRAIN; EQUIPMENT ADAPTIVE/MOBILITY. PREVENT FRONT AXLE THREAD DAMAGE DURING AXLE NUT REMOVAL SERVICE INFORMATION If an Applied Vehicle needs to have a front axle nut removed, for any reason, the staking of the nut into the axle keyway must first be removed. The essential tool (part number # J-52982, Figure 1) required to remove the nut staking, is called out as a “Cape Chisel” in the Electronic Service Manual (ESM), and must be used to prevent thread damage to the axle (see Figure 2 on page 2). • The Cape Chisel arrived at dealers in December of 2020. • Damaged threads, due to improper removal of the stake placed in the nut, will not be covered by warranty. For information on using the Cape Chisel, refer to the Electronic Service Manual (ESM): Section TRANSMISSION & DRIVELINE > FRONT AXLE > REMOVAL AND INSTALLATION > FRONT DRIVE SHAFT > LH/RH.
ITB19-013b2021-03-06. Service bulletin. FORWARD COLLISION AVOIDANCE; LANE DEPARTURE: SENSING SYSTEM: OTHER. AEB WARNING LIGHT BLINKING This bulletin has been amended. See AMENDMENT HISTORY on the last page. Please discard previous versions of this bulletin.
ITB20-026a2021-02-06. Service bulletin. ELECTRICAL SYSTEM. TELEMATICS CONTROL UNIT RESET AFTER AUTOMATIC COLLISION NOTIFICATION This bulletin has been amended. See AMENDMENT HISTORY on the last page. Please discard previous versions of this bulletin.
ITB20-025a2021-02-06. Service bulletin. ELECTRICAL SYSTEM. DTC B2724-23 AND/OR C1B56-04 STORED, AND/OR RAB ERROR MESSAGE OR WARNING This bulletin has been amended. See AMENDMENT HISTORY on the last page. Please discard previous versions of this bulletin.
ITB19-029a2021-02-06. Service bulletin. ELECTRICAL SYSTEM. TELEMATICS (IVC) SERVICE INFORMATION See ITB12-011 for models built before 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 InTouch Services™ subscription 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. • 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. • A check OFF sheet has been provided on page 11 to print and check off steps as they are performed. Please staple the completed Check OFF Sheet to the repair order.

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