# Service bulletin A26\-091 v1

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.

- Type: Service bulletin
- NHTSA id: 11035885
- Published by NHTSA: 2026\-08\-05
- Manufacturer's number: A26\-091 v1
- Manufacturer's date: 2026\-07\-24
- NHTSA component: FORWARD COLLISION AVOIDANCE: WARNINGS

## NHTSA's summary

Service Bulletin \- American Honda has identified a condition that may affect Collision Mitigation Braking System \(CMBS\) operation. Due to software programming issues of the Advanced Driver Assistance System \(ADAS\), unexpected vehicle deceleration may occur.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2026/MC-11035885-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2026/MC-11035885-9999.pdf)

The document is the manufacturer's. This site does not hold it.

## Components

Driver assistance

## Vehicles listed

- 2018 to 2020 HONDA ACCORD
- 2018 to 2020 HONDA ACCORD HYBRID
- 2017 to 2019 HONDA CR\-V

## Recalls for the same vehicles and component

- [20V771000](/recalls/nhtsa/20V771000.md), 2020-12-10: ELECTRICAL SYSTEM:BODY CONTROL MODULE:SOFTWARE; BACK OVER PREVENTION: SENSING SYSTEM: CAMERA; VISIBILITY/WIPER; VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM; VISIBILITY:POWER WINDOW DEVICES AND CONTROLS; EXTERIOR LIGHTING
- [18V629000](/recalls/nhtsa/18V629000.md), 2018-09-13: BACK OVER PREVENTION: SENSING SYSTEM: CAMERA; VISIBILITY:REARVIEW MIRRORS/DEVICES

## Other bulletins for the same vehicles and component

- [ONL6UV09092026](/bulletins/11037300.md), 2026-09-12, Other: LANE DEPARTURE: ASSIST; FORWARD COLLISION AVOIDANCE: WARNINGS; FORWARD COLLISION AVOIDANCE: ADAPTIVE CRUISE CONTROL. Owner Notification Letter \- Honda has developed software updates to the Honda Sensing system to enhance driver experience by modifying the circumstances when the advanced driver assist system \(ADAS\) decelerates the vehicle or the extent of deceleration. The software covers Adaptive Cruise Control \(ACC\), Collision Mitigation Braking System \(CMBS\), and Road Departure Mitigation \(RDM\).
- [A26\-091](/bulletins/11035781.md), 2026-08-05, Service bulletin: LANE DEPARTURE: WARNING; FORWARD COLLISION AVOIDANCE: ADAPTIVE CRUISE CONTROL; FORWARD COLLISION AVOIDANCE: WARNINGS. Service Bulletin \- Honda has developed software updates to the Honda Sensing system to enhance driver experience by modifying the circumstances when the advanced driver assist system \(ADAS\) decelerates the vehicle or the extent of deceleration. The software covers Adaptive Cruise Control \(ACC\), Collision Mitigation Braking System \(CMBS\), and Road Departure Mitigation \(RDM\).
- [AEBM07242026901](/bulletins/11035777.md), 2026-08-05, Other: FORWARD COLLISION AVOIDANCE: ADAPTIVE CRUISE CONTROL; FORWARD COLLISION AVOIDANCE: WARNINGS. Dealer Message \- Due to software programming issues of the Advanced Driver Assistance System \(ADAS\), unexpected vehicle deceleration may occur.
- [A21080A](/bulletins/10244299.md), 2023-10-25, Service bulletin: VEHICLE SPEED CONTROL; FORWARD COLLISION AVOIDANCE: ADAPTIVE CRUISE CONTROL. Service News \- If an Adaptive Cruise Control System Problem comes back on when the vehicle is driven in freezing conditions, inform the customer it is likely due to snow or ice buildup on the radar. Advise the customer of the following procedure to clean the front grille where the radar is located.
- [A21080A](/bulletins/10200835.md), 2021-09-02, Service bulletin: FORWARD COLLISION AVOIDANCE. "ServiceNews Article \- When returning the vehicle to the client, inform them that if the message Adaptive Cruise Control System Problem comes back on when the vehicle is driven in freezing conditions, it is likely because of snow or ice buildup on the radar. Advise the client of the following procedure to clean the front grille where the radar is located."
- [A21\-068](/bulletins/10200833.md), 2021-09-02, Service bulletin: FORWARD COLLISION AVOIDANCE; ELECTRICAL SYSTEM. Service Bulletin \- The ACC system error message comes on while driving when outside temperatures are low/near freezing.
- [A19\-051](/bulletins/10159788.md), 2019-05-15, Service bulletin: FORWARD COLLISION AVOIDANCE; FORWARD COLLISION AVOIDANCE: ADAPTIVE CRUISE CONTROL. Service Bulletin \- The adaptive cruise control \(ACC\) turns off unexpectedly while it is in use, and the Collision Mitigation Braking System problem. See Your Dealer. message appears on the MID.
- [A18\-117](/bulletins/10145897.md), 2018-10-22, Service bulletin: LANE DEPARTURE: BLIND SPOT DETECTION. Servicenews article \- Have you replaced the BSI radar unit and see these DTC's? ? B18DA \(L/S different s/w version from right\) ? B1EDA \(R/S different s/w version from left\)
- [APaS04062018901](/bulletins/10134508.md), 2018-04-23, Service bulletin: LANE DEPARTURE; ELECTRICAL SYSTEM; ENGINE AND ENGINE COOLING; FORWARD COLLISION AVOIDANCE. Dealer message \- American Honda Motor Co., Inc. \(AHM\) is investigating certain 2017\-2018 CR\-Vs with a customer complaint of various warning lights such as the brake system, lane departure, ACC \& forward collision warning illuminated on the dash with the DTC P2583\-76 \(Temporary stop of Integrated Driver System ? Misalignment Millimeter Wave Radar\) stored. To fully understand the cause of this condition, AHM would like to collect specific parts from the vehicle prior to you attempting a repair of any kind except to confirm conditions stated in the Qualifiers below before calling TRS.
- [APaS03202018902](/bulletins/10133035.md), 2018-04-16, Service bulletin: ELECTRICAL SYSTEM; FORWARD COLLISION AVOIDANCE; LANE DEPARTURE. Dealer message \- American Honda Motor Co., Inc. \(AHM\) is investigating certain 2017\-2018 CR\-Vs with a customer complaint of various warning lights such as the brake system, lane departure, ACC \& forward collision warning illuminated on the dash with the DTC P2583\-76 \(Temporary stop of Integrated Driver System ? Misalignment Millimeter Wave Radar\) stored. To fully understand the cause of this condition, AHM would like to collect specific parts from the vehicle prior to you attempting a repair of any kind except to confirm conditions stated in the Qualifiers below before calling TRS.

JSON: [/v1/bulletins/11035885](/v1/bulletins/11035885)

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