2021 Honda Accord

On February 21, 2022, the Office of Defects Investigation (ODI) opened Preliminary Evaluation (PE22003) to assess reports of inadvertent activation of the Collision Mitigation Braking System (CMBS), an automatic emergency braking (AEB) system, in model year 2017-2019 Honda CR-V and 2018-2019 Honda Accord vehicles.  The reports allege that activation of the AEB system occurs while driving with no apparent obstruction in the vehicle's forward path, resulting in sudden vehicle deceleration. Honda indicated that they were aware of a total of X,XXX reports that may relate to the alleged defect. Honda provided analysis of the alleged defect and alleges that some customers possibly had an inadequate understanding of the CMBS and its limitations.  However, many consumer complaints allege that Honda dealerships were unable to reproduce the condition or state that they were informed that this is considered normal CMBS operation. To date, ODI has received a total of 1,294 consumer complaints of inadvertent activation of CMBS in 2017-2022 Honda CR-V and 2018-2022 Honda Accord vehicles. A total of 31 complaints alleged a crash and 50 alleged an injury.  The Total column in the Failure Report Summary removes duplicate reports and shows the total number of reports with unique VINs from all Manufacturer, ODI, and EWR data sources.  In some cases, there were multiple reports associated with a particular vehicle in which recurring failures were alleged.  In total, there were X,XXX reports, 93 injury incidents and 47 crashes involving vehicles with unique VINs that may relate to the alleged defect. PE22-003 has been upgraded to an Engineering Analysis to further assess the scope, frequency, and potential safety related consequences of the inadvertent AEB activations. The scope has been expanded to include assessment of model year 2020-2022 Honda CR-V and Accord vehicles. To review the ODI reports cited in the Opening Resume ODI Report Identification Number document, go to NHTSA.gov.

The contact owns a 2021 Honda Accord. The contact stated that while her son was driving 55 MPH, the vehicle shut off with several warning lights illuminated on the instrument panel. The contact's son pulled off to the shoulder of the highway and had the vehicle towed to a dealer. While at the dealer, the mechanic discovered coolant leaking into cylinder #2, causing an engine misfire. The dealer replaced the head gasket. After the repair, the failure returned immediately upon driving the vehicle home from the dealer. The vehicle was taken back to the dealer and the failure persisted upon return of the vehicle. While checking the repair order, the contact discovered that the service report was blank. The dealer was unable to duplicate the failure or determine the cause of the issue. The contact was not notified of the issue after retrieving the vehicle. The manufacturer was notified of the failure, and the contact was provided a case number. The vehicle remained with the dealer unrepaired. The failure mileage was 43,881.

NHTSA ID

11766324

Incident

Aug 1, 2026

Mileage

43,881 mi

Sudden braking; car comes to a complete stop and brakes so Hard. Most likely fault from Collision Mitigation Brakking system

NHTSA ID

11765567

Incident

Aug 13, 2026

The car's infotainment system constantly glitches out and changes channels,outputs,texts,videos while car is being driven. It's very distracting and dangerous. It will literally do it 100's of times within a short period. It's much worse than any text messaging distraction, which is against the law. Several people with this car have the same issue. Also the car will break when there's actually nothing in the road that should make it break but it will just slam on the brakes.

NHTSA ID

11764376

Incident

Oct 28, 2021

COMPONENT: Visibility--Exterior Rearview Mirror, Passenger Side. While driving normally, the passenger-side exterior rearview mirror glass/holder assembly suddenly shattered and completely detached from the mirror housing. There had been no known collision or contact with another vehicle or object. The passenger window was open. The detached mirror glass/holder assembly entered through the open passenger window and landed on the passenger seat. Numerous small fragments of mirror glass were also deposited inside the passenger compartment, including on the passenger seat and dashboard. After the incident, the passenger-side mirror housing remained attached to the vehicle and remained in its normal extended operating position. The housing did not fold from the event and does not exhibit obvious significant collision damage. The detached mirror assembly and photographs have been preserved. Photographs show the exterior mirror housing,m the exposed internal adjustment mechanism, the shattered mirror assembly on the passenger seat, the shattered glass and the rear of the detached mirror holder/adjustment assembly. I am concerned that this may represent a failure of the mirror glass/holder or its attachment mechanism rather than ordinary collision damage. Because the mirror assembly and glass fragments entered the occupied passenger compartment, I believe the event presents a potential safety hazard to vehicle occupants. I am requesting that NHTSA retain this complaint for comparison with similar reports involving Honda Accord exterior mirror glass shattering or detachment.

NHTSA ID

11764287

Incident

Sep 10, 2026

Vehicle started flashing all lights on dashboard. I drove it for awhile and then it eventually went off. A few days later same lights came back on a car started misfiring. Was told by Honda that is was the Turbo that's going bad. Today is just cut off on me. Luckily there wasn't anyone behind me. I see a lot of people are having these same issues and a recall should be put out immediately.

NHTSA ID

11763472

Incident

Sep 10, 2026

Door lock actuator(s) randomly failing to lock/unlock. Multiple reports on forums for same exact issue. Replace one, another fails shortly after. Issue involves both locking and unlocking, putting safety individuals at risk for unexpected access to car or inability to lock car once inside. No messages, warnings, or suggestions from car to tell me that the locking had failed.

NHTSA ID

11762690

Incident

Oct 1, 2025

Unable to use cruise control Unable to use lane control Unable to use tire pressure gauge Unable to use auto brake system Car shakes due to a sudden decrease in engine performance. Turbocharger issues Powertrain System issues ECM Failure

NHTSA ID

11761750

Incident

Jun 20, 2026

Dash lights on for Brake system malfunction. Emergency parking brake light on as well as TPS system. Lights around Park, Neutral and drive not illuminated. Battery and alternator are in good standing.

NHTSA ID

11761169

Incident

Aug 31, 2026

Dealer Message - On August 21st, 2026, American Honda issued a Product Update for certain 2018-2022 Accord and Accord Hybrid models that received the accessory Wireless CarPlay and Android Auto upgrade. Refer to Service Bulletin 26-068 for additional information regarding the Product Update.

Tech Line Summary - Customers may report that the center display unit changes screens on its own, registers unintended inputs, or operates erratically without user interaction. The condition may be more noticeable when vehicle interior temperatures are elevated.

Dealer Message - Under certain conditions, the cylinder head gasket effectiveness may be reduced which may cause vehicles to experience overheating, coolant loss, misfire, and/or DTCs P0300 through P0304 stored.

Service Bulletin - Under certain conditions, the cylinder head gasket effectiveness may be reduced which may cause vehicles to experience overheating, coolant loss, misfire and/or DTCs P0300 thru P0304 stored.

Dealer Message - Due to a software programming issue within the Wireless CarPlay and Android Auto system, an invalid "License Authentication Error" message may appear on the Display Audio screen after approximately 1,500 ignition switch activations ON/OFF.

Service Bulletin - On certain 2018-2022 Accord and 2018-22 Accord Hybrid vehicles equipped with the Wireless CarPlay and Android Auto software upgrade, a programming issue within the Wireless CarPlay and Android Auto software may cause an invalid "License Authentication Error" message to appear on the display audio screen after approximately 1,500 ignition ON/OFF cycles.