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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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Only bulletins with component: Engine are shown. Show all

Bulletins, newest first
ITB17-042E2022-03-12. Service bulletin. ENGINE AND ENGINE COOLING. 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.
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?.
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.
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CONTROL MODULE (ECU/ECM). 2005-2015 INFINITI VEHICLES; ECM REPROGRAMMING SERVICE INFORMATION This bulletin is no longer active.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.
ITB17-042b2019-02-19. 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.
Revision 1-NEVAP2018-10-01. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL. OBD II EVAP Tube Warranty Enhancement UPDATE August 17, 2018 Please discard earlier versions of this bulletin. The announcement from March 21, 2017 has been revised to include: - Clarification that the refueling concern is extremely hard to fill, not intermittent, and occurs at multiple fueling stations and fuel pumps - Customer expense may be applicable if the vehicle is out of warranty
Revision 1-IEVAP2018-10-01. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL. OBD II EVAP Tube Warranty Enhancement UPDATE August 17, 2018 Please discard earlier versions of this bulletin The announcement from March 21, 2017 has been revised to include: o Clarification that the refueling concern is extremely hard to fill, not intermittent, and occurs at multiple fueling stations and fuel pumps o Client expense may be applicable if the vehicle is out of warranty
ITB13-052b2018-05-07. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY; ENGINE. 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.
ITB13-052a2017-10-15. Service bulletin. ENGINE. INTELLIGENT KEY NOT DETECTED / ENGINE WILL NOT START This bulletin has been amended to update the Applied Vehicles and make changes to the body of the bulletin. Please discard previous versions.
ITB16-015A2017-02-13. Service bulletin. EQUIPMENT; ENGINE. "VOLUNTARY SERVICE CAMPAIGN 2011 – 2013 QX56 AND M56; TIMING CHAIN THIS BULLETIN HAS BEEN AMENDED. THE CLAIMS INFORMATION SECTION HAS BEEN REVISED. NO OTHER CHANGES HAVE BEEN MADE. PLEASE DISCARD PREVIOUS VERSIONS OF THIS BULLETIN. INTRODUCTION INFINITI IS CONDUCTING A VOLUNTARY SERVICE CAMPAIGN ON CERTAIN 2011-2013 QX56 AND 2011-2013 M56 VEHICLES TO REPLACE THE “TIMING CHAIN”. THIS SERVICE WILL BE PERFORMED AT NO COST TO THE CUSTOMER FOR PARTS OR LABOR."
REVISION1-P63052017-02-09. Service bulletin. ENGINE. "TIMING CHAIN VOLUNTARY SERVICE CAMPAIGN THE ANNOUNCEMENT FROM MAY 6, 2016 HAS BEEN REVISED TO REFLECT INCREASED FLAT RATE TIMES AND INCLUDES ADDITIONAL QUESTIONS & ANSWERS IN THE FREQUENTLY ASKED QUESTIONS (FAQ) SECTION SUCH AS: - AN EXPLANATION REGARDING THE FLAT RATE TIME CHANGE - WHAT TO DO IF THE RETAILER IDENTIFIES ADDITIONAL PARTS ARE FOUND THAT ARE EXCESSIVELY WORN OR DAMAGED DUE TO THE TIMING CHAIN - WHAT TO DO IF THE CLIENT HAS ALREADY HAD THEIR TIMING CHAIN REPLACED ***** CAMPAIGN SUMMARY ***** INFINITI IS CONDUCTING A VOLUNTARY SERVICE CAMPAIGN ON CERTAIN MY 2011-13 QX56 AND M56 VEHICLES TO REPLACE THE ENGINE TIMING CHAIN, GUIDES, AND CRANKSHAFT SPROCKET. IN SOME OF THE AFFECTED VEHICLES, THE TIMING CHAIN MAY DETERIORATE OVER TIME AND DISTORT. IF THIS OCCURS, CLIENTS WILL HEAR ABNORMAL NOISES FROM THE ENGINE, WHICH MAY SOUND LIKE A RATTLE OR TICKING. IF THE ABNORMAL ENGINE NOISE CONTINUES, OVER TIME THE ENGINE COULD BE DAMAGED. INFINITI IS PERFORMING THIS REPAIR AT NO CHARGE TO AFFECTED CLIENTS FOR PARTS OR LABOR TO HELP ENSURE CONTINUED SATISFACTION WITH THEIR INFINITI VEHICLE. INFINITI IS COMMITTED TO A HIGH LEVEL OF PRODUCT SAFETY, SERVICE AND SATISFACTION FOR INFINITI OWNERS AND IS WORKING WITH ITS RETAILERS TO PROMPTLY ADDRESS THIS ISSUE. ***** WHAT RETAILERS SHOULD DO ***** TO ENSURE CLIENT SATISFACTION, RETAILERS ARE ASKED TO PERFORM THE FOLLOWING REPAIR PROCEDURE PRIOR TO SALE OF PRE-OWNED AND NEW (IF APPLICABLE) INVENTORY."
ITB-13-0092013-04-11. Service bulletin. ENGINE. INFINITI: WHINE NOISE FROM ENGINE AREA. IF THE NOISE DOES NOT INCREASE WITH ENGINE SPEED, THE TIMING CHAIN SYSTEM MAY NOT BE THE CAUSE. *JS UPDATED 10/29/2013 *JS

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