2025 Honda Ridgeline

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.

On two occasions, immediately after re-fueling the vehicle, the engine auto idle stop failed to restart the vehicle. Both times this happened at busy intersections. A series of messages appeared on the display. I was flustered because cars behind me were honking as I was blocking traffic so I don’t exactly remember the error messages. One message said to put the transmission in park. Another said to hold the brake and the engine start button. Eventually the engine did re-start by holding the start button down.

NHTSA ID

11755798

Incident

Aug 8, 2026

2025 Ridgeline. Brake pedal sinks when engine started. Brake pedal sinks below the footrest. When applying brake pedal in an emergency stop my left foot contacts footrest causing me to have to release then re-apply the brakes increasing stopping distance. And then Re-applying the mushy brakes causes me to push too hard resulting in erratic braking. Took it to Lynnwood Honda who inspected and bled the brakes but would not confirm any problem. There are no warning lights. The sinking mushy brakes have not caused an accident yet.

NHTSA ID

11755721

Incident

May 15, 2026

While sitting in traffic with my 2025 Honda Ridgeline, with the engine stopped as the brake had been fully applied, when I released pressure off the brake, my vehicle would not restart as it normally would in this situation, thereby stranding me in a serious traffic situation. I notified the police and my vehicle was eventually towed to the nearest Honda dealer to try to determine what the issue was . Scary situation since my vehicle only has approximately 25K miles on it.

NHTSA ID

11755532

Incident

Aug 7, 2026

My Honda Ridgeline has experienced a dangerous malfunction involving the Auto Idle Stop system. When the vehicle comes to a stop, the system automatically shuts off the engine as designed to conserve fuel. Normally, the engine should restart when the brake pedal is released. On multiple occasions, however, the engine has failed to restart when the brake pedal is released. A warning appears on the dashboard, and the vehicle becomes difficult to restart. This has left me unexpectedly unable to move the vehicle while stopped in traffic. This creates a serious safety hazard because the failure can occur at an intersection or in an active traffic lane. When traffic begins moving, the vehicle may remain stalled while surrounding drivers expect it to accelerate normally, creating a risk of a rear-end or other collision. The problem is unpredictable, and I am concerned that the Auto Idle Stop system can disable the vehicle during normal operation without adequate warning. I believe this condition should be investigated as a potential safety defect.

NHTSA ID

11755400

Incident

Jul 28, 2026

since I purchased this truck brand new from the dealer, the brakes always had air in the lines. No matter how many times I bleed the brakes, there is still air in the line. From my understanding, previous years of this truck had master cylinder issues. I went to the dealer and they refused to fix the issue, because I already attempted to fix the problem. Also, the car doesn't start when shut off during hot weather and you want to start the car again. You have to wait and try again. The car is laboring to start again. This vehicle is also known for slow starts.I hope you take this matter seriously. This is the issue with every brand new ridgline. Take your pick. I paid over 50k for a new truck and have to deal with these issues.

NHTSA ID

11755067

Incident

Apr 1, 2025

Vehicle horns are non-operational; 7/6/2026; no answer from corporate.

NHTSA ID

11754942

Incident

Jul 6, 2026

Car just shut off while I was driving. There was no power. It would not start. At first it sounded like it wanted to start and then it just made no sound at all. The brake was hard as well. I put the hazards on but was in the fast lane on Cleveland Avenue in Fort Myers. I believe there are traffic cameras that will show the car sitting while cars were trying to get through the traffic light. The car finally started however I have no idea why it happened. We could have been killed sitting in the fast lane of a three lane road. There were three of us in the car.

NHTSA ID

11754845

Incident

Aug 4, 2026

Start stop has failed to restart engine on several occasions.

NHTSA ID

11754660

Incident

Aug 3, 2026

Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2024-2026 Odysseys & Ridgelines and 2024-2025 Passports with a customer complaint of the Malfunction Indicator Light (MIL) on with the DTC P0441 (EVAP System Purge Flow Malfunction) stored. 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 2024-2026 Odysseys & Ridgelines and 2024-2025 Passports with a customer complaint of the Malfunction Indicator Light (MIL) on with the DTC P0441 (EVAP System Purge Flow Malfunction) stored. 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 2024-2026 Odysseys & Ridgelines and 2024-2025 Passports with a customer complaint of the Malfunction Indicator Light (MIL) on with the DTC P0441 (EVAP System Purge Flow Malfunction) stored. 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.

Over The Air - This update contains various performance enhancements and UI improvements.

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 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.