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Service bulletins for the 2017 Acura NSX

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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Only bulletins with component: Engine are shown. Show all

Bulletins, newest first
ONLX8Z021620212021-02-26. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM; ENGINE AND ENGINE COOLING. Owner Notification Letter - The vehicle may not start upon first press of the ENGINE START/STOP button. Also, the MID displays the error message KEYLESS START SYSTEM ERROR, and DTC B12C5 (Engine Start/Stop Switch Failure) is stored. American Honda is extending the warranty on the engine start/stop switch to 9 years from the original date of purchase or 125,000 miles, whichever comes first.
BBOM120920202020-12-19. Service bulletin. EQUIPMENT; ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM. Dealer Message - Today, December 9, 2020, Acura is announcing a warranty extension for certain 2017 NSX vehicles. This warranty extension covers the engine start/stop switch to address concerns of difficulty in starting or stopping the engine. Acura is extending the warranty coverage of the engine start/stop switch to 9 years from the original date of purchase or 125,000 miles, whichever comes first.
B20-0502020-12-19. Service bulletin. ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM. Service Bulletin - The vehicle may not start upon first press of the ENGINE START/STOP button. Also, MID displays the error message KEYLESS START SYSTEM ERROR, and DTC B12C5 (Engine Start/Stop Switch Failure) is stored. American Honda is extending the warranty for the keyless start system on these vehicles to 9 years from the original date of purchase or 125,000 miles, whichever comes first.
ONL6EL02142020_12020-02-20. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL; ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM. Owner Notification Letter - During assembly, the Owner Information CD that was placed in the vehicle did not include all the required emissions components in the Emissions Warranty Parts List. Enclosed in this package is an updated Owner Information CD that includes the updated Emission Warranty Parts List. Please place this CD in your vehicle glove box and discard the original Owner Information CD.
BBOM121220192019-12-18. Service bulletin. FUEL SYSTEM, GASOLINE; ELECTRICAL SYSTEM; ENGINE AND ENGINE COOLING. Dealer Message - Today, American Honda is announcing a product update (PUD) for certain 2017-19 NSX vehicles due to warranty booklets or CDs that do not list the correct warranty coverage for some emissions components. Do an iN VIN status inquiry to determine which units in your inventory are affected.
B19-0692019-12-18. Service bulletin. FUEL SYSTEM, GASOLINE; ELECTRICAL SYSTEM; ENGINE AND ENGINE COOLING. Service Bulletin - The warranty information booklet or CD that was placed in the vehicle during assembly did not include all the required emissions components in the Emissions Warranty Parts List. The failure to include the missing parts in the Emissions Warranty Parts List may cause confusion and client dissatisfaction.
BPaS083120189022018-09-17. Service bulletin. ENGINE AND ENGINE COOLING. Dealer message - American Honda Motor Co., Inc. (AHM) is investigating certain 2017-2018 NSXs with a client complaint of a rattle or a squeak noise coming from the carbon fiber meter visor. To fully understand the cause of this condition, AHM would like to inspect the vehicle prior to you attempting a repair of any kind.
BPaS081520189052018-09-17. Service bulletin. ENGINE AND ENGINE COOLING. Dealer message - American Honda Motor Co., Inc. (AHM) is investigating certain 2017-2018 NSXs with a client complaint of a rattle or a squeak noise coming from the carbon fiber meter visor. To fully understand the cause of this condition, AHM would like to inspect the vehicle prior to you attempting a repair of any kind.
BPaS032020189022018-04-16. Service bulletin. ENGINE AND ENGINE COOLING. Dealer message - American Honda Motor Co., Inc. (AHM) is investigating certain 2017-2018 NSXs with a client complaint of a rattle or a squeak noise coming from the carbon fiber meter visor. To fully understand the cause of this condition, AHM would like to inspect the vehicle prior to you attempting a repair of any kind.
BPaS030220189022018-04-16. Service bulletin. ENGINE AND ENGINE COOLING; BACK OVER PREVENTION. Dealer message - American Honda Motor Co., Inc. (AHM) is investigating certain 2017-2018 NSXs with a client complaint of a rattle or a squeak noise coming from the carbon fiber meter visor. To fully understand the cause of this condition, AHM would like to inspect the vehicle prior to you attempting a repair of any kind.
BPaS013020189032018-03-05. Service bulletin. ENGINE AND ENGINE COOLING; BACK OVER PREVENTION. Dealer message - American Honda Motor Co., Inc. (AHM) is investigating certain 2017-2018 NSXs with a client complaint of a rattle or a squeak noise coming from the carbon fiber meter visor. To fully understand the cause of this condition, AHM would like to inspect the vehicle prior to you attempting a repair of any kind.
BPaS011120189012018-01-29. Service bulletin. ENGINE AND ENGINE COOLING. Dealer message - American Honda Motor Co., Inc. (AHM) is investigating certain 2017-2018 NSXs with a client complaint of a rattle or a squeak noise coming from the carbon fiber meter visor. To fully understand the cause of this condition, AHM would like to inspect the vehicle prior to you attempting a repair of any kind.
B17-0482017-12-08. Service bulletin. ENGINE AND ENGINE COOLING. Service bulletin - The MIL comes on with DTC P0128 (Cooling System Malfunction). The thermostat inner seal detaches and allows the thermostat to be held open. This causes the coolant temperature to incorrectly increase higher than the expected rate.
BPaS101320179012017-10-21. Service bulletin. ENGINE AND ENGINE COOLING. Dealer message - American Honda Motor Co., Inc. (AHM) is investigating certain 2017 NSXs with a client complaint of excessive wind noise while driving. To fully understand the cause of this condition, AHM would like to inspect the vehicle prior to you attempting a repair of any kind.
BPaS092120179012017-10-05. Service bulletin. ENGINE AND ENGINE COOLING. Dealer message - American Honda Motor Co., Inc. (AHM) is investigating certain 2017 NSXs with a client complaint of excessive wind noise while driving. To fully understand the cause of this condition, AHM would like to inspect the vehicle prior to you attempting a repair of any kind.
BTS1703012017-08-25. Service bulletin. EQUIPMENT; ENGINE AND ENGINE COOLING. Tech line summary article - To improve efficiency, the factory has installed new equipment for filling the engine coolant system, which cuts down on the amount of engine run time. As a result, the engine coolant level may be above the MAX mark on the reserve tank when the vehicle leaves the factory.
BTS1703012017-06-30. Service bulletin. ENGINE AND ENGINE COOLING:COOLING SYSTEM. TECHLINE SUMMARY ARTICLE - TO IMPROVE EFFICIENCY, THE FACTORY HAS INSTALLED NEW EQUIPMENT FOR FILLING THE ENGINE COOLANT SYSTEM, WHICH CUTS DOWN ON THE AMOUNT OF ENGINE RUN TIME. AS A RESULT, THE ENGINE COOLANT LEVEL MAY BE ABOVE THE MAX MARK ON THE RESERVE TANK WHEN THE VEHICLE LEAVES THE FACTORY.

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