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Service bulletins for the 2011 Infiniti M56

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.

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

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Bulletins, newest first
P6305OL2021-05-10. Service bulletin. ENGINE; EQUIPMENT; EQUIPMENT ADAPTIVE/MOBILITY. Infiniti is conducting a Voluntary Service Campaign on certain 2011-2013 QX56 and 2011-2013 M56 vehicles to replace the ?Timing Chain?.
ITB15021A2021-05-10. Service bulletin. EQUIPMENT; FUEL SYSTEM, GASOLINE:STORAGE:TANK ASSEMBLY:FILLER PIPE AND CAP. SERVICE INFORMATION If the clip for the fuel filler cap tether becomes lost or is detached for any reason, it is no longer necessary to replace the fuel filler cap. The clip or "pin" is now available as a separate service part. NOTE - Do not replace the fuel filler cap if only the pin is needed. See this bulletin for further detail.
ITB09039C2021-05-10. Service bulletin. VISIBILITY. SERVICE INFORMATION The purpose of this bulletin is to give Infiniti dealers guidelines to help determine if windshield breakage is covered under warranty or is the customer?s responsibility. Nissan North America (NNA) is not responsible for damage to glass that is a result of objects striking or scratching the glass. However, NNA is responsible for manufacturing issues such as distorted glass and cracks that are due to improper installation or damage to the glass during vehicle assembly. NNA typically does not find any type of cracks in the windshield due to stress after the dealership PDI. See this bulletin for further detail.
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.
ITB120692021-05-10. Service bulletin. WHEELS; EQUIPMENT. IF YOU CONFIRM: A shudder condition is present when performing low speed turns when driving on dry roads/surfaces (i.e. parking lot maneuvers) AND The Intelligent All Wheel Drive (AWD) system is NOT engaged by instrument control. ACTION: 1. Replace the breather tube and related hoses for the A/T and transfer assemblies with the ones listed in PARTS INFORMATION. - It is easiest to replace the breather tube and hoses while the transfer assembly is removed. 2. Replace the electric coupling located in the transfer assembly. - Refer to the Electronic Service Manual (ESM) as needed. - See PARTS INFORMATION. See this bulletin for further detail.
ITB13-052C2021-05-08. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. INTELLIGENT KEY NOT DETECTED / ENGINE WILL NOT START This bulletin has been amended to update the Applied Vehicles. No other changes were made. Please discard previous versions of this bulletin.
ITB17-015B2021-05-08. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM. NAVIGATION SYSTEM REBOOTS WHEN SXM TRAFFIC IS ENABLED 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.
ITB10-037E2021-04-08. Service bulletin. ELECTRICAL SYSTEM. RADIO PRESETS / CLIMATE CONTROL SETTINGS / NAVIGATION SETTINGS CHANGE WITH INTELLIGENT KEY MEMORY This bulletin has been amended. Please see AMENDMENT HISTORY on the last page. Please discard previous versions of this bulletin.
ITB12-041D2021-04-08. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM. SIRIUSXM SATELLITE RADIO / WEATHER / TRAFFIC / TRAVEL LINK ACTIVATION This bulletin has been amended. See AMENDMENT HISTORY on the last page. Discard all previous versions of this bulletin.
ITB11-003F2021-04-08. Service bulletin. ELECTRICAL SYSTEM. NAVIGATION MAP DATA UPDATE MATRIX This bulletin has been amended. See AMENDMENT HISTORY on the last page. Please discard previous versions of this bulletin.
ITB10-017E2021-04-08. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY; EQUIPMENT; ELECTRICAL SYSTEM. AV CONTROL UNIT REPLACEMENT REQUIRES This bulletin has been amended. See AMENDMENT HISTORY on the last page. Please discard previous versions of this bulletin.
ITB11-043a2021-01-09. Service bulletin. EQUIPMENT. ALL 2011 INFINITI MODELS: I-KEY STORAGE REVISED; ALL KEYS ARE STORED IN CUP HOLDER This bulletin is no longer active. Please discard previous versions of ITB11-043.
ITB15-024a2021-01-09. Service bulletin. ELECTRICAL SYSTEM; ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE (ECU/ECM). 2005-2015 INFINITI VEHICLES; ECM REPROGRAMMING SERVICE INFORMATION This bulletin is no longer active. Please discard previous versions of ITB15-024.
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.
ITB11-066f2020-06-09. Service bulletin. EQUIPMENT:ELECTRICAL. PREMIUM NAVI/AUDIO VISUAL CONTROL UNIT DIAGNOSIS AND ORDERING This bulletin is no longer applicable. Discard previous versions of ITB11-066.
ITB13-008a2020-02-07. Service bulletin. SUSPENSION. 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.
ITB19-0192019-09-10. Service bulletin. SEATS. FRONT PASSENGER SEAT VIBRATION AT HIGHWAY SPEEDS WHILE UNOCCUPIED IF YOU CONFIRM The front passenger seat back vibrates at highway speeds while unoccupied. AND There are no other shake or vibration concerns with the vehicle. ACTION Replace the front passenger seat back frame with the new one listed in PARTS INFORMATION on the last page of this bulletin.
ITB19-0082019-05-20. Service bulletin. EQUIPMENT. EXTERIOR CLEANING INFORMATION SERVICE INFORMATION When cleaning the exterior of an Infiniti vehicle, damage may occur when using a cleaner with too high of an alkaline concentration. - Always refer to the Appearance and care section of the related owner?s manual. - Not all cleaners are created equal. - Many cleaners come in concentrated form. - Alkaline cleaners (cleaners with a high pH value) can cause spots on paint and trim when not used as directed. - Some commercial car washes use cleaners with a high pH value. - When using cleaners that meet the conditions defined in the Appearance and care section, be sure to carefully follow the cleaner?s directions. - When finished cleaning/washing, rinse thoroughly with clean water. IMPORTANT: Damage to paint, glass, bright metal, or any other exterior surface caused by using improper cleaning products is not covered under warranty. Always refer to the Paint Incident Identification Manual (PIIM) and Assurance Products Reference Manual (APRM). Follow the guidelines in the PIIM and APRM for non-warrantable exterior body, glass, or painted surface quality issues. To access the PIIM and APRM, login to nnanet.com: - For the PIIM, select: MY LINKS > Warranty > Paint Incident Identification Manual - For the APRM, select: MY DOCUMENTS > Warranty > APRM See further information in this bulletin.
ITB17-042b2019-02-19. 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.
Revision 1-IEVAP2019-01-07. Service bulletin. ENGINE; EQUIPMENT. OBD II EVAP Tube Warranty Enhancement The update below was sent out to Regions and Retailers in August of this year. We are re-circulating this update to make regional and retailer personnel aware that we are re-notifying clients at this time.
ITB17-026b2019-01-07. Service bulletin. FUEL SYSTEM, GASOLINE:STORAGE:TANK ASSEMBLY; FUEL SYSTEM, GASOLINE. INFINITI; FUEL TANK IS EXTREMELY DIFFICULT TO FILL The update below was sent out to Regions and Retailers in August of this year. We are re-circulating this update to make regional and retailer personnel aware that we are re-notifying clients at this time.
ITB18-0372018-12-03. Service bulletin. STRUCTURE; EQUIPMENT. PLASTIC INTERIOR TRIM PROTECTIVE COVERING REMOVAL SERVICE INFORMATION Vehicles are delivered with plastic interior trim protective covering on the front and rear seats, front and rear door panel finishers, steering wheel, and sun visors (see examples on page 2). When removing the protective covering, care must be used to avoid scuffs, scrapes, cuts, and other abrasive contact to interior trim components. DO NOT use sharp objects like razor blades, box cutters, knives, etc. when removing the plastic interior trim protective covering. IMPORTANT: All soft trim described in this bulletin is on automatic return to NNA. Any trim found damaged in the way described in this bulletin will be charged back to the dealer.

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