2023 Honda Odyssey

On June 3, 2022, the Office of Defects Investigation (ODI) opened Preliminary Evaluation PE22005 after the agency received VOQs and several field reports concerning the Auto Idle Stop (AIS) feature on 2016-2019MY Honda Pilot vehicles. The complaints allege that the engine fails to restart on its own from a complete stop at a traffic light or road intersection with the AIS function engaged. The subject vehicles are equipped with a 3.5L engine with a 9-speed automatic transmission. On January 6, 2023, Honda released service bulletins 23-008 and 23-009. These service bulletins address the failure to restart issue in the 2016-2019MY Honda Pilot vehicles, as well as the 2015-2020 Acura TLX, 2016-2020 Acura MDX, 2019-2022 Honda Passport, and 2020-2023 Honda Ridgeline vehicles. The repair outlined in the service bulletins is a two-stage countermeasure to remedy the issue. The first stage is a Programmed Fuel Injection (“PGM-FI”) software update. The second stage is only deployed if the software update fails to remedy the issue. The second stage, depending on the model and model year, consists of replacement of the starter assembly, starter relays, and a valve adjustment. Additionally, Honda extended the warranty coverage to 10 years with unlimited mileage for vehicles requiring the second stage component replacement. ODI continues to receive complaints of the AIS failure to restart, with many complainants alleging the campaign countermeasures had been completed.NHTSA has reviewed Honda's Information Request Letter responses involving warranty claims, lawsuits, and consumer complaints in addition to ODI's own data. This Engineering Analysis is being opened to further consider the potential safety defect, including gathering additional data regarding Honda’s service campaign efficacy. ODI is additionally expanding the scope to encompass all vehicles addressed in Honda’s service bulletins 23-008 and 23-009 as well as newer model year vehicles, which are substantially similar to the vehicles covered by the service campaign. To review the ODI reports cited in the Opening Resume ODI Report Identification Number document, go to NHTSA.gov.

This vehicle needs to be added to the current recall 23v-431. Media screen goes blank and rear camera in operable when this happens.

NHTSA ID

11756123

Incident

Aug 10, 2026

I was driving down the highway at highway speeds with no other vehicles around me and with my air conditioning on and the sunroof exploded.

NHTSA ID

11754121

Incident

Jul 31, 2026

The contact owns a 2023 Honda Odyssey. The contact stated that while driving at an undisclosed speed, the accelerator pedal was depressed; however, the vehicle failed to accelerate as intended. The contact stated that the brakes independently activated. The contact stated that the failure had occurred while driving on a busy highway. The vehicle was taken to the dealer; however, the contact was informed that there was no fix for the failure. The contact was informed that the failure was a known failure with similar vehicles. In addition, the contact was advised to disable the forward collision avoidance feature. The contact was informed that the forward collision avoidance system occasionally malfunctioned. The vehicle was not diagnosed or repaired by an independent mechanic or dealer. The contact stated that the failure was a safety hazard. The manufacturer was made aware of the failure. The failure mileage was approximately 10,000.

NHTSA ID

11753361

Incident

Jul 17, 2023

Mileage

10,000 mi

When we are idling (at a red light), the engine will suddenly stop. We believe this is the feature of the start-stop system used to save gasoline. We will then have to completely restart the car as the car has been turned off. This creates a huge safety hazard at intersections. We have asked Honda about it twice now and currently replacing the starter. Our car is a little over 3 years ago with about 40k miles. The starter should not be failing at this point and we believe it is due to this start stop issue. The starter cost us $1400 in a car that is just over 3 years old with about 40k miles.

NHTSA ID

11752376

Incident

Jul 20, 2026

The contact owns a 2023 Honda Odyssey. The contact stated that while the vehicle was parked, the trunk independently unlatched. The contact stated that the failure occurred intermittently, requiring the trunk to be tied down to prevent reopening. The vehicle was taken to a dealer, where it was diagnosed with water damage in the fuse box. The contact was informed that the trunk under the garnish area needed to be resealed, and the vehicle was repaired. The manufacturer was not made aware of the failure. The failure mileage was approximately 76,465.

NHTSA ID

11749305

Incident

Jun 20, 2026

Mileage

76,465 mi

While driving from [XXX] to [XXX], all of the safety systems started to fail. We had driven about 45 minutes from our starting point. As the system started to fail, they would flash across the screen on the dashboard saying each one that was failing. We pulled over to the side of the road, and my husband popped the hood and flames started coming out of the hood, closest to the dashboard and windshield. We called 911 and by the time they reached our location, the entire vehicle was engulfed in flames. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

NHTSA ID

11749062

Incident

Jul 5, 2026

The remedy for Safety Recall 23V-431 (MOST bus FAKRA connectors), performed 8/2023 at Joyce Koons Honda (Manassas, VA), has failed. The recall's stated safety risk, rearview camera failure when MOST communication is lost over 20 seconds, now occurs regularly on my vehicle. Symptoms began early 2025 and have worsened: intermittent loss of the rearview camera in reverse, infotainment reboots, and speaker popping (the warning signs listed in the Part 573 report). On [XXX] the infotainment system and backup camera were unavailable for over 50% of a long drive. Vehicle logs show 822 MOST network signal-loss events from [XXX] to [XXX] (avg ~15/week), predominantly "Tuner_Amplifier_Unit SUDDEN_SIGNAL_OFF" and "Meter SUDDEN_SIGNAL_OFF", the exact failure mode the recall remedy was meant to correct. I can provide the log data (chart and CSV). I reported the recurrence to the dealer on 5/31/2025; they said they could not reproduce it, and vehicle logs were cleared up to that date. I opened American Honda case #[XXX] in 10/2025 and escalated as case #[XXX] in 6/2026. On 7/1/2026 an American Honda representative told me Honda cannot authorize service without a dealer diagnosis and that I must pay out of pocket for diagnosis of this failed recall remedy, with reimbursement only as discretionary "goodwill." This appears inconsistent with 49 U.S.C. 30120, which requires recall remedies at no charge, including when the original remedy was inadequate. Honda revised Service Bulletin 23-046 to Version 3 on 12/18/2024, after my repair, revising parts and repair information, which suggests earlier repairs were performed with superseded parts or procedures. This is a rear-visibility (FMVSS 111) safety defect. Please record this as a failed recall remedy for 23V-431. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

NHTSA ID

11747806

Incident

Jan 1, 2025

The front seat slide lever on my 2023 Honda Odyssey failed completely on its own with no accident, force, or misuse involved. The lever detached from the seat rail mechanism, making it impossible to slide the seat forward or backward. The vehicle was purchased in August 2022 and this failure occurred approximately 3.5 years later, just 10 months outside the bumper-to-bumper warranty. When I brought the vehicle to the Honda dealer, I was informed I would be charged $100 for diagnostics even if I declined the repair, leaving me no real choice but to proceed. The total repair cost was $276 (parts $189.78, labor $70.95, misc $15.60) plus taxes. I contacted Honda Customer Relations requesting goodwill reimbursement. After a 3-week review, Honda denied the request. I believe this may be a manufacturing defect as another owner of the same Odyssey model has reported the identical failure.

NHTSA ID

11747240

Incident

Jun 9, 2026

Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2023-2025 Accords, 2022-2025 Civics & Odysseys with a customer complaint of a detached or loose rearview mirror bracket/slug from the windshield. Failure between the mount spring and bracket will not be accepted. To better 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.

Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2023-2025 Accords, 2022-2025 Civics & Odysseys with a customer complaint of a detached or loose rearview mirror bracket/slug from the windshield. Failure between the mount spring and bracket will not be accepted. To better 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.

Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2023-2025 Accords, 2022-2025 Civics & Odysseys with a customer complaint of a detached or loose rearview mirror bracket/slug from the windshield. Failure between the mount spring and bracket will not be accepted. To better 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.

Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2023-2025 Accords, 2022-2025 Civics & Odysseys with a customer complaint of a detached or loose rearview mirror bracket/slug from the windshield. Failure between the mount spring and bracket will not be accepted. To better 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.

Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2023-2025 Odysseys, Passports, and Ridgelines with a customer complaint of the brake pedal sticking or slow to return. This may result in delayed acceleration, dragging noise, or all 3 brake lights staying on without any pedal engagement. The vehicle may also experience issues with activating cruise control. To better understand the cause of this condition, AHM would like to inspect the vehicle prior to you attempting a repair of any kind.

Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2023-2025 Accords, 2022-2025 Civics & Odysseys with a customer complaint of a detached or loose rearview mirror bracket/slug from the windshield. Failure between the mount spring and bracket will not be accepted. To better 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.