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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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Bulletins, newest first
ITB18-005B2021-04-08. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM. ADAS SYSTEM DTC C1A03, C1A04, AND/OR C1B01 SERVICE INFORMATION This bulletin has been amended. Please 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.
ITB12-011P2021-04-08. Service bulletin. EQUIPMENT; EQUIPMENT ADAPTIVE/MOBILITY; ELECTRICAL SYSTEM. TELEMATICS SERVICE INFORMATION This bulletin has been amended. See AMENDMENT HISTORY on the last page. Please discard previous versions of this bulletin.
ITB19-002c2021-03-09. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. 2018-2020 INFINITI; DISPLAY CONTROL UNIT SERVICE INFORMATION This bulletin has been amended. See AMENDMENT HISTORY on the last page. Please discard previous versions of this bulletin.
ITB18-040d2021-03-09. Service bulletin. ELECTRICAL SYSTEM. SOFTWARE UPDATES FOR INFOTAINMENT ISSUES This bulletin has been amended. See AMENDMENT HISTORY on the last page. Discard all previous versions of this bulletin.
ITB18-023a2021-03-09. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. 2018 Q50, Q50 HYBRID, AND Q60; POI DOES NOT DISPLAY AFTER VOICE MENU CALL This bulletin has been amended. See AMENDMENT HISTORY on the last page. Discard all previous versions of this bulletin.
ITB20-023a2021-03-06. Service bulletin. ELECTRICAL SYSTEM; FORWARD COLLISION AVOIDANCE; EQUIPMENT. LANE CAMERA AIMING VEHICLE REFERENCE VALUES NOT IN ESM This bulletin has been amended. See AMENDMENT HISTORY on the last page. Please discard previous versions of this bulletin.
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.
ITB19-005a2021-03-06. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL; ELECTRICAL SYSTEM. CLOCK, AUDIO, HVAC OR NAVIGATION SETTINGS INTERMITTENTLY CHANGE ON THEIR OWN This bulletin has been amended. See AMENDMENT HISTORY on the last page. Please discard previous versions of this bulletin.
ITB20-0292021-01-09. Service bulletin. STEERING; EQUIPMENT. 2017-2020 Q50; STEERING FEELS LIGHT OR SENSITIVE IF YOU CONFIRM The client states the steering feels light or sensitive AND There are no EPS DTCs stored. ACTION 1. Confirm the current power steering control module part number. 2. Reprogram the power steering control module, if applicable.
ITB19-013a2020-12-08. Service bulletin. FORWARD COLLISION AVOIDANCE; LANE DEPARTURE: SENSING SYSTEM: CAMERA. AEB WARNING LIGHT BLINKING This bulletin has been amended. See AMENDMENT HISTORY on the last page. Please discard previous versions of this bulletin.
ITB20-0232020-10-08. Service bulletin. ELECTRICAL SYSTEM; LANE DEPARTURE. LANE CAMERA AIMING VEHICLE REFERENCE VALUES NOT IN ESM SERVICE INFORMATION If the lane camera requires aiming, the values in Table A on page 4 must be used. • For all other models, consult the Electronic Service Manual (ESM). The following CONSULT-III plus (C-III plus) figures and steps are only provided to indicate where the VEHICLE REFERENCE VALUE from Table A is to be entered. The entire camera aiming procedure must be followed to complete the aiming procedure. • Refer to the Electronic ESM section: CRUISE CONTROL & DRIVER ASSISTANCE > DRIVER ASSISTANCE SYSTEM > DRIVER ASSISTANCE SYSTEM > BASIC INSPECTION > LANE CAMERA UNIT > CAMERA AIMING ADJUSTMENT. 1. Turn the ignition ON. 2. From the C-III plus home screen, select Diagnosis (One System).
ITB17-042c2020-10-08. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY; FUEL SYSTEM, GASOLINE; EQUIPMENT. 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.
ITB20-0162020-06-10. Service bulletin. ENGINE AND ENGINE COOLING. Q50 AND Q60 WITH V6 ENGINE; COOLANT RESIDUE AT WATER PUMP IF YOU CONFIRM Coolant residue is on the surface of the water pump and on the water pump pulley AND Coolant DOES NOT leak out when connected to a cooling system pressure tester. HINT: The customer may state there is a coolant smell. ACTION Install an EPT sealer to the face of the water pump pulley. • For EPT sealer installation, see SERVICE PROCEDURE on the next page. • For EPT sealer information, see PARTS INFORMATION on the last page of this bulletin.
ITB20-002a2020-05-05. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY; ENGINE AND ENGINE COOLING. 2016-2019 Q50 AND 2017-2018 Q60; VR30DDTT ENGINE SERVICE INFORMATION This bulletin has been amended. Please see AMENDMENT HISTORY on the last page. Please discard previous versions of this bulletin.
ITB20-0032020-03-06. Service bulletin. WHEELS; TIRES:VALVE; TIRES:PRESSURE MONITORING AND REGULATING SYSTEMS. 2014-2020 Q50 AND 2017-2020 Q60; TPMS SENSOR LEAKING AIR IF YOU CONFIRM The vehicle has the original equipment wheels and TPMS sensors (tire pressure sensors) installed. AND The owner states that one or more tires has a continuous air leak or looses air pressure multiple times over a 30 day period (approximatively 1 psi every 3 days). NOTE: The TPMS warning lamp may be ON (not flashing) with one or more of the following DTCs stored: • - C1704, C1705, C1706, C1707, C1730, C1731, C1732, C1733 • - If the TPMS warning lamp is flashing for more than one (1) minute this bulletin does not apply. Refer to the Electronic Service Manual (ESM) for further diagnostic information. ACTION 1. Confirm that air is leaking between the tire pressure sensor’s valve stem and valve nut of the affected wheel/tire. 2. Replace the valve stem washer/seal and the valve nut and then torque to the new specification.
ITB20-0022020-02-08. Service bulletin. ENGINE AND ENGINE COOLING. 2016-2019 Q50 AND 2017-2018 Q60; VR30DDTT ENGINE SERVICE INFORMATION SERVICE INFORMATION The oil fill volume for the VR30DDTT engine has increased by 0.5 quarts (0.5 liters). When replacing a VR30DDTT short block or long block in an applied vehicle for any reason, replace the dipstick with the part listed in PARTS INFORMATION on the next page. The length of the new dipstick is shorter so that it can accurately measure the new oil fill volume. • - If the overall length of the dipstick is approximately 25 inches (63.5 cm), replace the dipstick with the one listed in PARTS INFORMATION on the next page. • - The overall length of the new dipstick is approximately 24 ¼ inches (62 cm). • - The new dipstick reflects an increase in oil fill volume by 0.5 quarts (0.5 liters).
ITB19-027a2020-02-08. Service bulletin. ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM. MIL ON WITH DTC P0087, P0101, P0448, OR P2008, VEHICLES REGISTERED OUTSIDE OF CALIFORNIA This bulletin has been amended. See AMENDMENT HISTORY on the last page. Please discard previous versions of this bulletin.
ITB19-002b2020-02-08. Service bulletin. EQUIPMENT. 2018-2020 INFINITI; DISPLAY CONTROL UNIT SERVICE INFORMATION This bulletin has been amended. See AMENDMENT HISTORY on the last page. Please discard previous versions of this bulletin.
P9329_P9344_P9342020-01-09. Service bulletin. ENGINE AND ENGINE COOLING. Engine Control Module (ECM) Reprogram California Voluntary Emission Service Campaign ***** Campaign Summary ***** INFINITI is conducting a Voluntary Emissions Service Campaign on approximately 49,497 specific INFINITI vehicles identified in Service Comm and currently registered to owners in the state of California to reprogram the Engine Control Module (ECM) in the event that a permanent diagnostic trouble code (P-DTC) for P0448, P0101, P2008, or P0087 is recorded in the ECM. Due to calibration errors on the affected vehicles, the ECM may improperly store a permanent diagnostic trouble code (P-DTC) even though the emissions on-board diagnostic system is functioning properly. As of July 1, 2019 the State of California has implemented a revised Inspection Maintenance (I/M) or “Smog Check” test program. Without the software update, the subject vehicles may not pass this Smog Check test in those areas of California where such testing is required under state law. This incident has no effect on the safety, performance, drivability, or fuel consumption of the applicable vehicles. ***** What Retailers Should Do ***** 1. Verify if vehicles are affected by this Voluntary Emissions Service Campaign using Service Comm or DBS National Service History – Open Campaign I.D. • P9329 – Affected Model Year 2015 • P9344 – Affected Model Year 2016 • P9346 – Affected Model Year 2017 • P9348 – Affected Model Year 2018 • P9350 – Affected Model Year 2019 2. Retailers are requested to repair any affected vehicles in retailer new or pre-owned inventory to ensure client satisfaction. • - New vehicles in retailer inventory can also be identified DBS (Sales-> Vehicle Inventory, and filter by Open Campaign). • - Refer to IPSB 15-286 for additional information 3. Retailers should use ITB19-043 to correct any vehicles subject to this campaign.
ITB19-0432020-01-09. Service bulletin. ENGINE AND ENGINE COOLING. VOLUNTARY EMISSIONS SERVICE CAMPAIGN VEHICLES REGISTERED IN CALIFORNIA; ENGINE CONTROL MODULE INTRODUCTION Infiniti is conducting this voluntary emissions service campaign on certain specific model year Infiniti vehicles (see APPLIED VEHICLES) registered in the state of California. The engine control module (ECM) will be inspected, and reprogrammed if it applies. This service will be performed at no charge to the customer for parts or labor. IDENTIFICATION NUMBER Infiniti has assigned identification numbers P9329, P9344, P9346, P9348, and P9350 to this campaign. The correct number must appear on all communication and documentation of any nature dealing with this campaign. RETAILER RESPONSIBILITY Retailers are to repair vehicles falling within range of this campaign that enter the service department. This includes vehicles purchased from private parties, vehicles presented by transient (tourists) owners, and vehicles in a retailer’s inventory.
ITB12-011o2019-11-07. Service bulletin. EQUIPMENT. TELEMATICS SERVICE INFORMATION This bulletin has been amended. See AMENDMENT HISTORY on the last page. Please discard previous versions of this bulletin.
ITB14-011d2019-10-09. Service bulletin. ENGINE AND ENGINE COOLING. REMOTE ENGINE START NOT WORKING This bulletin has been amended. See AMENDMENT HISTORY on the last page. Please discard previous versions of this bulletin.
ITB19-0282019-10-08. Service bulletin. ENGINE AND ENGINE COOLING. Q50 AND Q60 WITH VR30DDTT (V6) ENGINE; ENGINE OIL DRAIN PLUG SERVICE INFORMATION SERVICE INFORMATION Whenever installing an engine oil drain plug on an APPLIED VEHICLE with a VR30DDTT (V6) engine, NEVER tighten the drain plug greater than its specified torque. Over-tightening may loosen the threaded insert in the oil pan (lower), causing an oil leak. ALWAYS replace the drain plug gasket after removing the drain plug, and then tighten the drain plug to the specified torque. • VR30DDTT (V6) engine oil drain plug torque (with new gasket): • 2WD and AWD: 33.5 N•m (3.4 kg-m, 25 ft-lbs) • Avoid contact with the engine oil as it may be hot and cause burns. • Avoid prolonged or repeated contact with used engine oil as it may cause skin cancer. Try to avoid direct skin contact with used engine oil. If skin contact is made, wash with a suitable hand cleaner or soap as soon as possible.
ITB19-0272019-10-08. Service bulletin. ELECTRICAL SYSTEM; ENGINE AND ENGINE COOLING. MIL ON WITH DTC P0087, P0101, P0448, OR P2008 IF YOU CONFIRM An applied vehicle has one or more DTCs stored, shown in Table A on page 2, AND The ECM part number is shown in Table B, starting on page 3. ACTION 1. First perform the appropriate diagnostic procedure for the stored DTC to repair the vehicle according to the Electronic Service Manual (ESM). 2. Reprogram the ECM after performing the diagnosis and repair. • -The ECM reprogram in this Service Procedure is not a repair for the DTC, but instead updates the way the permanent DTC is stored and allowed to be erased. The DTC must be properly diagnosed and repaired before the reprogram is applied.

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