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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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Bulletins, newest first
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.
P53262021-05-10. Service bulletin. 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.
ITB13007A2021-05-10. Service bulletin. VISIBILITY. SERVICE INFORMATION Windshield "foreign material" that is on the surface of the glass in some cases can be cleaned off with a very particular type and grade of steel wool. * Most any foreign material on the surface of the Windshield can be cleaned off by using #0000 super fine steel wool. >The #0000 grade super fine steel wool can be found in most hardware stores. Please see this bulleitn for further details.
ITB09015G2021-05-10. Service bulletin. EQUIPMENT. SERVICE INFORMATION Design and process changes have been made to improve battery voltage at dealer receipt. Our goal is to deliver vehicles to customers with a 12 volt battery in excellent condition. Proper dealership storage and maintenance of vehicle 12 volt batteries is essential to insuring good battery operating life and customer satisfaction. Dealers are responsible for maintaining vehicles in their inventory. 12 volt batteries in vehicle inventory should always be kept at a full charge to prevent excessive discharge during storage and so they are ready for delivery to customers at any time. See this bulletin for further detail.
ITB14059A2021-05-10. Service bulletin. VEHICLE SPEED CONTROL; PARKING BRAKE; SEAT BELTS. IF YOU CONFIRM All "hands free" functions of the Intelligent Key (I-Key) do not work. For example, the doors will not lock or unlock when pressing either front door request switch. NOTE: - The issue of all I-Key "hands free" functions not working may occur intermittently or all the time. - The message "No Key Detected" or similar may show on the Vehicle Information Display (located in the combination meter). - All I-Key remote button functions (door lock/unlock, etc.) WILL work normally when all I-Key "hands free" functions are NOT working. ACTION 1. Inspect the I-Key?s battery on its negative contact side. 2. If excessive scratching is found, replace the battery. 3. Verify all I-Key functions (both "hands free" and remote) work properly after battery replacement. NOTE: Do NOT replace the BCM, I-Key, or other parts for the issue described under IF YOU CONFIRM, if it should occur. See this bulletin for further detail.
P5325OL2021-05-10. Service bulletin. SUSPENSION; BACK OVER PREVENTION:SOFTWARE. Infiniti is conducting a Voluntary Service Campaign on certain MY 2014-15 Q50 vehicles equipped with Direct Adaptive SteeringTM (DAS) system to update the DAS software to the latest production standards
P53252021-05-10. Service bulletin. BACK OVER PREVENTION:SOFTWARE. Infiniti is conducting a Voluntary Service Campaign on certain MY 2014-15 Q50 vehicles equipped with Direct Adaptive SteeringTM (DAS) system to update the DAS software to the latest production standards
PC4052021-05-10. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. Beginning October 14th, 2015 Infiniti USA will be asking retailers to provide additional client satisfaction activities on specific vehicles identified through Service Comm as PC405 ?Q50 Client Appreciation?.
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.
ITB13039A2021-05-10. Service bulletin. BACK OVER PREVENTION; WHEELS; SERVICE BRAKES; LANE DEPARTURE. SERVICE INFORMATION This bulletin has compiled Tire Pressure Monitor System (TPMS) and Low Tire Pressure Warning System (LTPWS) information for: - Basic diagnosing of TPMS/LTPWS systems - Radio frequency interference causing a "No Data" (C1708, C1709, C1710, C1711) condition - Sensor leaks - Moving TPMS/LTPWS wheel assemblies from one vehicle to another and TPMS/LTPWS sensor registration - Air pressure changes with altitude and ambient temperatures - Aftermarket tire sealers - Aftermarket wheels - Inflating/deflating tires with TPMS/LTPWS sensors See this bulletin for further detail.
ITB11011A2021-05-10. Service bulletin. POWER TRAIN; ENGINE AND ENGINE COOLING; EQUIPMENT. SERVICE INFORMATION For QX60 Hybrid Vehicles, go to page 4. Q50, Q70, and M35 Hybrid Vehicles The internal combustion (IC) engine in the Q50, Q70, and M35 Hybrid vehicles is started using a high voltage motor that is integrated into the transmission. The high voltage motor gets its power from the high voltage Lithium-Ion (Li-ion) battery that is mounted between the trunk room and the rear seat. The Li-ion battery cannot be recharged using an external battery charger; therefore it is very important that the battery state of charge (SOC) is properly maintained during extended storage periods. Action must to be taken in order to prevent excessive discharge of the high voltage Li-ion battery during an extended storage period. If the reserve capacity of the Li-ion battery is not sufficient, the hybrid system cannot be started. Perform the Battery Discharge Prevention During Extended Storage procedure in this bulletin once a month (every 30 days). NOTE: A discharged high voltage Li-ion battery is not a warrantable issue. See this bulletin for further detail.
ITB14028A2021-05-10. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:FLUID/LUBRICANT. SERVICE INFORMATION The information in this bulletin is provided to help ensure correct diagnosis and repair of fluid leaks. All fluid leaks, when properly diagnosed, should be repaired (whether under warranty or customer pay) to ensure proper vehicle operation. However, certain normal operating conditions can be misdiagnosed as a leak requiring repair. Unnecessary repair or replacement of parts in connection with incorrectly diagnosed "leaks" can negatively impact customer satisfaction, be time consuming and costly, and if not performed correctly can lead to future repairs. See this bulletin for further detail.
ITB14051A2021-05-10. Service bulletin. POWER TRAIN; FORWARD COLLISION AVOIDANCE. IF YOU CONFIRM All of the following: The FCW (Forward Collision Warning) malfunction is ON or reported to have been ON, and DTC C1A27 (ECD POWER SUPPLY CIRCUIT) is stored (Past or Current), and the brake fluid level is normal. NOTE: C1A27 is an ICC (Intelligent Cruise Control) DTC. ACTION Reprogram the ABS control unit (ABS) per the Service Procedure in this bulletin. - Part of the Service Procedure, step 20 on page 8, is a confirmation that reprogramming is needed to resolve the incident shown in Figure A and B on page 1. See this bulletin for further detail.
ITB13054D2021-05-10. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL; ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE (ECU/ECM). IF YOU CONFIRM: The MIL is ON with DTC P0101 and/or P010B (MAF SEN/CIRCUIT-B1/B2) and there are no drivability issues. ACTION: 1. Refer to step 6 in the SERVICE PROCEDURE to confirm this bulletin applies to the vehicle you are working on. 2. If this bulletin applies, reprogram the ECM. NOTE: If this bulletin does apply (the ECM needs to be reprogrammed), do NOT replace the mass air flow sensor(s). See this bulletin for further detail.
ITB15001A2021-05-10. Service bulletin. STEERING; AIR BAGS; BACK OVER PREVENTION; WHEELS. IF YOU CONFIRM The steering wheel makes a faint squeaking/ticking noise when turned left or right. NOTE: Due to the faint nature of this noise it may be necessary to lift front wheels off of the ground so that it can be isolated. ACTION Remove driver?s side airbag and apply felt tape with the SERVICE PROCEDURE starting on page 2. See this bulletin for further detail.
ITB10037D2021-05-10. Service bulletin. VISIBILITY; AIR BAGS; STEERING. SERVICE INFORMATION The Applied Vehicles are equipped with a new version of Intelligent Key presets memory. Each Intelligent Key can be programmed to have its own unique set of presets for certain vehicle systems. Vehicle systems that are linked with Intelligent Key include: - Automatic Drive Positioner (includes driver seat, steering column, and mirror position memory) - Audio (station presets, etc.) - Auto air conditioning and heating (retains the last temperature and mode setting for each Intelligent Key user) - Navigation system (retains the last settings [e.g., Birdview] and clock display preference for each Intelligent Key user) See this bulletin for further detail.
ITB150252021-05-10. Service bulletin. BACK OVER PREVENTION; EQUIPMENT; WHEELS; SERVICE BRAKES; STEERING. SERVICE INFORMATION When servicing run flat tires or low profile tires: - Special equipment and procedures are required to avoid damage. - Specifically, Tire Pressure Monitor transmitters (TPMS sensors) can be damaged when improperly dismounting and mounting tires. - TPMS sensors becoming damaged during mounting or dismounting tires are not covered under warranty. - To avoid such damage, ensure that the tire changer being used and the operator of the tire changer are capable of servicing run flat and low profile tires. - Operator?s manuals for such tire changers must be followed. See this bulletin for further detail.
ITB150202021-05-10. Service bulletin. WHEELS. SERVICE INFORMATION The appearance of painted alloy wheels can be damaged if acidic cleaners are used. DO NOT use Chrome Wheel Cleaner on Painted Wheels. Many chrome wheel cleaners have acidic ingredients. Make sure to follow all instruction in the Appearance and Care Section of the Owner?s Manual. Damage to wheel appearance due to the use of inappropriate chemicals or cleaning products is not covered under warranty. See this bulletin for further detail.
ITB150162021-05-10. Service bulletin. LANE DEPARTURE. SERVICE INFORMATION If you confirm there is a need to replace the combination meter front cover (lens) on an Applied Vehicle for any reason (scratch, blemish, etc.): - Do not replace the entire combination meter assemby. The front cover of the combination meter assembly is available as a separate service part. - Refer to the Electronic Service Manual, section MWI-Meter, Warning Lamp & Indicator, for replacement information. See this bulletin for further detail.
ITB10062E2021-05-10. Service bulletin. WHEELS. SERVICE INFORMATION For vehicles delivered to the dealers with wheel protector covers - Do not remove the wheel protector covers during Pre-Delivery Inspection (PDI) - Wheel protector covers help prevent cosmetic rotor corrosion. See this bulletin for further detail.
ITB99043G2021-05-10. Service bulletin. EQUIPMENT. SERVICE INFORMATION NOTE - Failure to follow the procedures in this bulletin may result in the denial of a warranty claim. In an effort to protect the paint finish, Paint Guard Film (PGF) is applied on many new Infiniti vehicles. Paint Guard Film is a temporary white plastic protective film that is applied by the factory to the horizontal painted surfaces of the vehicle. The PGF protects the paint finish during vehicle handling, transportation and storage from harmful elements such as acid rain,iron particles, bird droppings, tree sap and other environmental contaminants. NOTE - Paint Guard Film CANNOT remain on the vehicle for more than six months after the vehicle's manufacture date. PGF must be removed at the end of six months. See this bulletin for further detail.
ITB14039B2021-05-10. Service bulletin. ELECTRICAL SYSTEM; VISIBILITY. IF YOU CONFIRM A strong sulfur like odor is coming from the Moonroof drain hoses after a hot soak (after sitting with doors and windows closed). - Odor is most noticeable if the Moonroof shade is left closed while the vehicle sits in the direct sunlight and then after a hot soak the Moonroof shade is opened. NOTE - The Moonroof drain hoses MUST be the cause of the strong sulfur like odor for this bulletin to apply. ACTION Replace the Moonroof drain hoses with the Service Procedure starting on the next page AND deodorize with an ozone generator as needed AND THEN replace in-cabin microfilter. See this bulletin for further detail.
ITB150072021-05-10. Service bulletin. VEHICLE SPEED CONTROL; POWER TRAIN. IF YOU CONFIRM A power window auto-up does not work for one or more power windows. ACTION Replace the left front (driver) door finisher with the new one listed in the Parts Information. While replacing the door finisher, also replace the main power window switch. See this bulletin for further detail.
ITB150042021-05-10. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE (ECU/ECM):SOFTWARE. IF YOU CONFIRM: The MIL is ON after the engine has been idling a while and one or both of the following DTCs are found stored in the ECM: - P0171 (FUEL SYS-LEAN-B1) - P0174 (FUEL SYS-LEAN-B2) ACTION: 1. Confirm this bulletin applies. - Compare the vehicle?s current ECM part number to those listed in Table A (see page 5). 2. If the ECM part number does not match one listed in Table A, this bulletin does not apply. Go back to ASIST for further diagnostic and repair information. 3. If this bulletin applies, reprogram the ECM. See this bulletin for further detail.

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