2019 Honda Clarity Plug-In Hybrid Problems

I am writing to report an unresolved high-voltage safety defect involving the Motor Power Inverter Module on my 2019 Honda Clarity Plug-In Hybrid. The vehicle's high-voltage hybrid propulsion inverter is emitting a severe, high-pitched mechanical squealing noise during acceleration and regenerative braking.The high-voltage inverter serves as the foundational link regulating current between the lithium-ion battery and the electric drive motor. A failing inverter module presents an immediate, unreasonable safety hazard. Internal failure, thermal runaway, or component degradation within the inverter stack creates an imminent risk of sudden high-voltage isolation fault. This will result in an immediate vehicle stall and a total loss of propulsion while driving at highway speeds, leaving the vehicle stranded in traffic with no power to accelerate out of harm's way, creating a severe crash hazard.Furthermore, an authorized Honda dealership—Visalia Honda (Groppetti Automotive) in California—has failed to properly diagnose, isolate, or resolve this high-voltage drivetrain defect despite the vehicle being brought in specifically for this issue. Despite the component being legally covered under California’s mandated 15-year/150,000-mile extended emissions and hybrid warranty, the dealership has taken no constructive corrective action, allowing a known, physically degraded high-voltage component to remain active on public roadways.Federal intervention and a formal technical investigation into Honda's clarity hybrid propulsion inverter systems are required to address this vehicle stalling hazard before an electrical failure results in a highway collision.

Currently the high voltage inverter is squealing, it is currently at the dealership. They have verified it is the inverter that is malfunctioning but they will not warrenty the repair because they are saying it needs to completely fail and throw a code. This is the right time to fix it prior to catastrophic failure, can you please help.

I was entering the highway on ramp with a car in front of me going slow, when saw it was clear switched lanes and attempted to speed up to highway speed and the car's automatic braking system activated, flashed "BRAKE" on the dash with nothing in front of me, lane was clear, and then it applied the brakes hard. Came to an almost complete stop with my foot on the gas, had to remove foot to be able to accelerate again, luckily there was no near car behind me or it would have rear ended my car.

The contact owns a 2019 Honda Clarity Plug-In Hybrid. The contact stated while driving at an undisclosed speed, the vehicle lost motive power while depressing the accelerator pedal. There was no warning light illuminated. The vehicle was taken to a local dealer to be diagnosed; however, the failure could not be duplicated. The vehicle was taken to another local dealer, Honda of Escondido (1700 Auto Park Way Escondido, CA 92029); where the vehicle was diagnosed but the failure could not be duplicated. The vehicle was not repaired. The manufacturer was made aware of the failure. The failure mileage was approximately 125,000.

I am writing to express my serious concern regarding the safety recall for my 2019 Honda Clarity (VIN: [XXX] ). The recall, dated February 2024, pertains to a potential fuel pump failure that could cause engine stalling while driving, posing a significant safety risk. Despite the severity of this issue, I have encountered significant delays and difficulties in getting the necessary repairs completed at my local Honda dealerships. When I contacted them about the recall immediately after receiving notice, I was informed that they do not have the required parts in stock. Furthermore, the date at which the dealers said that they would be receiving the parts continues to get pushed back from the estimated timeframe for receiving these parts, initially stating it would be 2-3 months, but this has been an ongoing issue with no resolution in sight and well past 60 days. This prolonged delay is unacceptable given the potential safety implications. The recall notice clearly states that a fuel pump failure could lead to an engine stall while driving, increasing the risk of a crash. I am deeply concerned about my safety and that of my passengers while operating this vehicle. I respectfully request that Honda take immediate action to: 1. Expedite the delivery of the necessary parts to my local dealership. 2. Provide a firm date for when the recall repair can be completed on my vehicle. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

The contact owns a 2019 Honda Clarity Plug-In Hybrid. The contact stated while driving at an undisclosed speed, the vehicle lost motive power while depressing the accelerator pedal. There was no warning light illuminated. The vehicle was taken to a local dealer to be diagnosed; however, the failure could not be duplicated. The vehicle was taken to another local dealer, Honda of Escondido (1700 Auto Park Way Escondido, CA 92029); where the vehicle was diagnosed but the failure could not be duplicated. The vehicle was not repaired. The manufacturer was made aware of the failure. The failure mileage was approximately 125,000.

My 2019 Honda Clarity has had a hybrid battery failure that triggers “Check Engine” and “Power System” warnings, making the vehicle unsafe and unreliable to drive. I brought the car to Norm Reeves Honda Cerritos on 12/29/2025, and the battery—still under warranty—has been on backorder for over 6 months with no repair completed. The dealer repeatedly requested new diagnostic readings but has not fixed the issue. I have asked for a loaner due to safety concerns, but none has been provided. The ongoing delay leaves me with a vehicle that cannot operate safely, and Honda has not offered a timely resolution. Despite ongoing communication with American Honda Automobile Customer Service and Norm Reeves Honda Superstore Cerritos, the issue has remained unresolved.

I am writing to report an unresolved high-voltage safety defect involving the Motor Power Inverter Module on my 2019 Honda Clarity Plug-In Hybrid. The vehicle's high-voltage hybrid propulsion inverter is emitting a severe, high-pitched mechanical squealing noise during acceleration and regenerative braking.The high-voltage inverter serves as the foundational link regulating current between the lithium-ion battery and the electric drive motor. A failing inverter module presents an immediate, unreasonable safety hazard. Internal failure, thermal runaway, or component degradation within the inverter stack creates an imminent risk of sudden high-voltage isolation fault. This will result in an immediate vehicle stall and a total loss of propulsion while driving at highway speeds, leaving the vehicle stranded in traffic with no power to accelerate out of harm's way, creating a severe crash hazard.Furthermore, an authorized Honda dealership—Visalia Honda (Groppetti Automotive) in California—has failed to properly diagnose, isolate, or resolve this high-voltage drivetrain defect despite the vehicle being brought in specifically for this issue. Despite the component being legally covered under California’s mandated 15-year/150,000-mile extended emissions and hybrid warranty, the dealership has taken no constructive corrective action, allowing a known, physically degraded high-voltage component to remain active on public roadways.Federal intervention and a formal technical investigation into Honda's clarity hybrid propulsion inverter systems are required to address this vehicle stalling hazard before an electrical failure results in a highway collision.

My 2019 Honda Clarity has had a hybrid battery failure that triggers “Check Engine” and “Power System” warnings, making the vehicle unsafe and unreliable to drive. I brought the car to Norm Reeves Honda Cerritos on 12/29/2025, and the battery—still under warranty—has been on backorder for over 6 months with no repair completed. The dealer repeatedly requested new diagnostic readings but has not fixed the issue. I have asked for a loaner due to safety concerns, but none has been provided. The ongoing delay leaves me with a vehicle that cannot operate safely, and Honda has not offered a timely resolution. Despite ongoing communication with American Honda Automobile Customer Service and Norm Reeves Honda Superstore Cerritos, the issue has remained unresolved.

When driving in gas mode, the engine is revving high as in high rpm . I am not sure if the gear is shifting or has problems. The car revs high and the more I push the accelerator the louder the engine sound.

2019 Honda Clarity. Both the condenser and evaporator failed at 5 years and 55k miles and cause the AC system to not work, which in turn will not defrost the front windshield in the winter (visibility concern). The dealer has confirmed the issue when I took it into the service department on June 13th, 2025. Honda will replace the condenser for free with Service Bulletin 21-017 which extended the warranty to 10 years. The evaporator is not covered under any warranty and would cost $2,610 to replace. This is a known issue that Honda should cover under a warranty or recall due to it being a safety issue in addition to a comfort issue.

Air conditioner failed due to faulty condenser and faulty evaporator leaking refrigerant. Window defroster no longer functions resulting in poor visibility. Honda dealer refused to complete repair as evaporator is not included in Service Bulletin 21-017. Dealer quoted $2800 to repair and offered no goodwill discount when requested through Honda America.

The contact owns a 2019 Honda Clarity Plug-In Hybrid. The contact stated that while driving at an undisclosed speed, the brake pedal was depressed; however, the vehicle failed to stop as intended. The contact stated that the BRAKE Hold system, hill start assist, collision mitigation system, VSA, and the electric parking brake warning lights were illuminated. The vehicle was driven to a safe location and turned off. The vehicle was restarted. Additionally, the warning lights were no longer illuminated. The contact stated that the failure had occurred while it was cold, and the temperature was below zero degrees. The vehicle was taken to the dealer, where it was diagnosed with an electric servo brake control unit/pedal seal simulator failure. The contact was informed that the electric servo brake control unit/pedal seal simulator needed to be replaced. The vehicle was not repaired. The contact was informed that parts were not in-stock and that the parts needed to be ordered. The contact researched the failure using an online chat group and was advised to take the vehicle back to the dealer. The vehicle was taken to the dealer, and the contact informed the dealer that the failure could be because of a failing battery. The dealer replaced the battery. A month later, the failure reoccurred. The contact stated that while sitting in the vehicle with the engine idling and the foot on the brake pedal, the vehicle rolled backwards. The vehicle almost crashed into the vehicle that was parked behind it. The contact immediately turned off the vehicle. The vehicle was restarted. The vehicle was driven to the residence without the failure recurring. The vehicle was not diagnosed or repaired by an independent mechanic or dealer. The manufacturer was made aware of the failure but provided no assistance. The failure mileage was approximately 44,000.

I was entering the highway on ramp with a car in front of me going slow, when saw it was clear switched lanes and attempted to speed up to highway speed and the car's automatic braking system activated, flashed "BRAKE" on the dash with nothing in front of me, lane was clear, and then it applied the brakes hard. Came to an almost complete stop with my foot on the gas, had to remove foot to be able to accelerate again, luckily there was no near car behind me or it would have rear ended my car.

This is an issue, not an incident. When using the regenerative braking paddles on the steering wheel, the vehicle can decelerate at a rapid pace. When this happens, the brake lights do no light up even though it’s slowing down at a rapid pace. This could cause an accident if cars behind do not notice the deceleration.

Driver side headlight allows moisture to enter, contine to get headlight error. Turn signals and hazard signals stopped working. Dealer indicates that entire headlight assembly must be replaced at a cost of $2000.00. No sign of exterior damage.

The contact owns a 2019 Honda Clarity Plug-In Hybrid. The contact stated that while driving at various speeds and merging into a lane, the Lane Keep Assist engaged, and the vehicle shuddered significantly and veered towards the opposite direction. Additionally, the steering wheel was significantly resistant. The contact stated that the failure mainly occurred when slowly merging into another lane. The contact stated that she would need to quickly merge to prevent the failure from occurring. The message “Lane Keep Assist” was displayed. Additionally, the contact stated that the automatic emergency braking (AEB) warning light would illuminate while driving, though there were no other vehicles or objects nearby. The contact stated that the seat belt being latched sound was not audible and the seat belt would unintendedly unlatch occasionally. The vehicle was taken to the dealer, where it was diagnosed that no issues were found. The dealer informed the contact that the vehicle could not be repaired under NHTSA Campaign Number: 20V326000 (Seat Belts) as the VIN was not included. The manufacturer was notified of the failure, but no assistance was provided. The vehicle was not repaired. The failure mileage was approximately 21,000.

ON 09/29/20 AT APPROX. 1710 HRS. WENT TO MY VEHICLE, WHICH WAS PARKED IN MY DRIVEWAY. I WAS TAKING MY TEN YEAR OLD SON TO THE PARK. WHEN HE ENTERED THE VEHICLE (REAR DRIVER SIDE) AND TRIED TO PUT ON HIS SEAT BELT, HE STATED, "DAD, MY SEAT BELT BROKE." I WENT TO CHECK THE SEAT BELT AND NOTICED THAT THE SEAT BELT WAS COMPLETELY TORN OFF. I THEN TOLD MY SON TO GO TO THE OPPOSITE SIDE OF THE SEAT (THE PASSENGER REAR) AND USE THAT SEAT BELT. HE THEN EXCLAIMED, "THIS ONE IS TORN ALSO!" I CHECKED ON THAT SEAT BELT AS WELL AND NOTICED THAT SEAT BELT WAS FRAYED AND TORN, BUT WAS STILL ATTACHED BY A SMALL SECTION. I TOLD MY SON TO USE THE MIDDLE SEAT. AS I INSPECTED THE SEAT BELT TO THE MIDDLE SEAT, I NOTICED THAT THE SEAT BELT SHOWED SIGNS OF FRAYING ON BOTH SIDES OF THE BELT. I CONTACTED THE DEALERSHIP WHERE I PURCHASED THE VEHICLE AND I WAS TOLD THAT BECAUSE OF THE SAFETY ISSUE, THAT THEY WOULD CONTACT HONDA CORPORATE IN ORDER TO HAVE AN INVESTIGATION DONE AND THAT THEY COULD NOT CONTINUE WITH ANY REPAIRS UNTIL HONDA CORPORATE AUTHORIZED THE REPAIRS.*DT*JB*JB

I was rear ended on the freeway that l caused my car to hit a guard rail, head on. I remember getting rear ended and then blacked out on hitting the guard rail. I then had chest pain. My driver's side airbags deployed with the driver's side front foot area airbags deploying. The airbags on the steering wheel did not deploy. There's a dash cam footage of this below that shows my car hitting head on with the guard rail at 31mph. [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

TRY TO START VEHICLE AND IT GOES CRAZY, ALL SYSTEMS FAIL AND WILL NOT START. THIS WAS AFTER SITTING FOR ABOUT HALF HOUR IN A PARKING LOT. NEED TO GET OUT LOCK ALL DOORS WALK AWAY FOR 2 TO 5 MINS. ONCE RENTER THE SYSTEMS RESTART BUT ALL SETTINGS FAIL AND NEED TO RESET. I POSTED A YOUTUBE VIDEO (HTTPS://YOUTU.BE/N0FSEPKA5D8)