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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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By trouble code

Only bulletins with component: Electrical system are shown. Show all

Bulletins, newest first
ONL6NZ012520232023-02-04. Service bulletin. ELECTRICAL SYSTEM; FUEL SYSTEM, GASOLINE. Owner Notification Letter - Our records indicate that a Product Update has not been completed on this vehicle (Vehicle Identification Number [VIN NUMBER]). The PGM-FI computer may not output some required communication data to a generic scan tool under certain conditions due to an internal software defect. This has no effect on the function or use of the vehicle.
B21-0362022-09-09. Service bulletin. ELECTRICAL SYSTEM. "Service bulletin - Due to a software defect between two CPUs, the Generic Scan Tool (GST) may not be able to read the Calibration ID (CID) of the CPU under some limited conditions. NOTE: The GST issue doesn't impact the Honda scan tool."
ONL6NZ012120222022-01-26. Service bulletin. ELECTRICAL SYSTEM. Owner Notification Letter - On your 2017 or 2018 NSX, the PGM-FI computer may not output some required communication data to a generic scan tool under certain conditions, due to an internal software defect. This has no effect on the function or use of the vehicle. For customers who may be subject to inspection maintenance or Smog Check, this issue may cause you to fail an inspection.
BBOM112420212021-12-03. Service bulletin. ELECTRICAL SYSTEM; ELECTRICAL SYSTEM:SOFTWARE. Dealer Message - Today, November 24, 2021, Acura is announcing a product update for certain 2017-2018 NSX vehicles for a software defect that may prevent the output of the calibration ID (CID) to a generic scan tool (GST). Perform an iN VIN status inquiry to determine which units in your inventory are affected.
B21-0362021-12-03. Service bulletin. ELECTRICAL SYSTEM; ELECTRICAL SYSTEM:SOFTWARE. Service Bulletin - Due to a software defect between two CPUs, the Generic Scan Tool (GST) may not be able to read the Calibration ID (CID) of the CPU under some limited conditions.
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.
B19050C2019-05-30. Service bulletin. POWER TRAIN; ELECTRICAL SYSTEM:12V/24V/48V BATTERY; ELECTRICAL SYSTEM. ServiceNews Article - If the 12-volt battery goes dead or the vehicle has an electrical or mechanical issue that keeps the transmission from shifting to Neutral, the best way to move the vehicle is with commercially available car dollies. If there aren't any available, you'll need to release the park lock (manually put the transmission into Neutral) using the procedure under Gear Shift Control Actuator Removal and Installation in the service information.
B19040B2019-04-22. Service bulletin. ELECTRICAL SYSTEM:12V/24V/48V BATTERY; ELECTRICAL SYSTEM. ServiceNews Article - Does your vehicle not start due to a discharged battery? In some cases, the audio unit is the culprit. The audio unit might not shut down after the vehicle is turned to OFF, which will cause the audio unit to slowly drain the battery. If the vehicle applies, you need to follow the procedure in S/B 17-035, Audio Unit May Display "USB Not Responding." and update the audio unit.
BTS1710012017-10-12. Service bulletin. ELECTRICAL SYSTEM; ELECTRICAL SYSTEM:WIRING:FUSES AND CIRCUIT BREAKERS. Tech line summary article - If the power system won't start when pressing the ENGINE/START STOP button, yet the instrument panel and other electrical items are working, a blown B5 (7.5 A) fuse in the auxiliary under-hood fuse/relay box may be the culprit. We've traced the cause of this blown fuse to a short in the high mount brake light.
B17-0352017-10-05. Service bulletin. ELECTRICAL SYSTEM. Service bulletin - The audio display unit may display the message ?USB Not Responding.? with or without a USB device plugged into the USB port on the vehicle. If you do an DTC check with an i-HDS, DTC B1404 (Telematics-ECU Telephone Module Error) will be saved.
B17090C2017-10-04. Service bulletin. SERVICE BRAKES, AIR:DISC:PADS; ELECTRICAL SYSTEM. Servicenews article - The optional carbon ceramic brakes for the 2017 NSX are unique. To help ensure a trouble-free installation, here are some tips: Brake Pad Sensor Wiring Harnesses ? Make sure you install the sensor with the red and black wires to the inner pad and the sensor with just the red wire to the outer pad. ? Keep in mind each wiring harness has a different length and must be installed on the proper brake pad. ? Pay attention to the paint marks on the brake pads. They tell you which way the pads should face.
BJA508092017-08-31. Service bulletin. ELECTRICAL SYSTEM:12V/24V/48V BATTERY. Servicenews article - While running an all DTC check with the i-HDS, are you seeing DTC P0562 (battery condition monitor module power source circuit unexpected voltage) with no other DTCs listed, yet the MIL is off and there?s no apparent symptom? If so, chances are there?s nothing wrong with the vehicle. Just clear the DTC, and recheck by cycling the ignition three times.
B17050B2017-07-01. Service bulletin. VISIBILITY:POWER WINDOW DEVICES AND CONTROLS; ELECTRICAL SYSTEM:12V/24V/48V BATTERY. "SERVICE NEWS ARTICLE - IF THE 12-VOLT POWER GOES OUT (THE BATTERY GOES DEAD OR IT’S DISCONNECTED), THE DOOR GLASS WON’T GO TO THE PARTIAL DOWN POSITION WHEN YOU OPEN A DOOR. KEEP IN MIND THAT ALTHOUGH THE DOOR GLASS SEEMS TO BE SHUT TIGHT, THE DOOR OPENING SEAL IS ACTUALLY FLEXIBLE ENOUGH SO YOU CAN OPEN THE DOOR WITHOUT DAMAGING IT. YOU JUST NEED TO PULL ON THE OUTER DOOR HANDLE A LITTLE HARDER."
BJA052952017-05-15. Service bulletin. ELECTRICAL SYSTEM:12V/24V/48V BATTERY. "JOB AID - THE NSX HIGH-VOLTAGE BATTERY PACK REPLACEMENT PROCEDURE IS AN EXTENSIVE PROCEDURE THAT REQUIRES EXTRA CARE AND CAUTION COMPARED TO OTHER HIGH-VOLTAGE BATTERY PACKS IN OTHER ACURA HYBRID MODELS. TO SUPPLEMENT THE PROCEDURES LISTED IN SERVICE INFORMATION, A VIDEO WAS CREATED TO BE USED AS A VISUAL AID. ALWAYS FOLLOW THE PROCEDURES AND CAUTIONS LISTED IN SERVICE INFORMATION."

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