2019 Honda Clarity Plug-In Hybrid Driver assistance Problems

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.

NHTSA ID

11674482

Incident

Jul 10, 2025

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.

NHTSA ID

11609826

Incident

Apr 15, 2024

Mileage

125,000 mi

The contact owns a 2019 Honda Clarity Plug-In Hybrid. The contact stated that while driving at undisclosed speeds, during sunny weather, the vehicle unintendedly braked without warning. The warning light "Brake" was illuminated. The contact stated that the failure reoccurred. The contact also experienced a failure with Lane Keeping Assist and Road Departure Mitigation, where the vehicle jerked out of the desired lane without warning and the vehicle failed to return to the intended lane. The contact disabled the system due to the failure. The contact stated that when the heater or A/C was activated, the speedometer suddenly started going down and the vehicle failed to exceed 20 MPH. The vehicle was taken to a local dealer to be diagnosed; however, no cause for the failure was found. The manufacturer was made aware of the failure; however, no assistance was provided. The failure mileage was 22,000.

NHTSA ID

11589741

Incident

Jun 22, 2023

Mileage

22,000 mi

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.

NHTSA ID

11512450

Incident

Aug 17, 2022

Mileage

21,000 mi

MONDAY SEP 7, 2020 AROUND 11:20 AM UNINTENDED ACCELERATION MY WIFE WAS DRIVING THE CAR AND IN PROCESS TO PARK IN OUR HOUSE GARAGE. WHEN SHE GOT ON THE DRIVE WAY, SHE PRESSED THE BRAKE AND STOPPED IN FRONT OF THE GARAGE DOOR TO OPEN IT. THEN RELEASED THE BRAKE AND THE CAR MOVE FORWARD SLOWLY, WITHOUT PRESS THE ACCELERATOR PEDAL. WITH HER FOOT STILL OVER THE BRAKE PEDAL, SHE THEN GENTLY PRESS THE BRAKE PEDAL IN ORDER TO STOP, THEN THE CAR IMMEDIATELY START TO ACCELERATE AND HIT THE GARAGE WALL THEN STOP. SHE HAVE BEEN PARKING THE CAR IN THE GARAGE EVERY DAY FOR A YEAR AND NEVER HAVE THIS HAPPENED.

NHTSA ID

11353760

Incident

Sep 7, 2020

Mileage

5 mi

WHEN THE CRUISE CONTROL (HONDA SENSING) IS ACTIVATED ON THE VEHICLE, THE VEHICLE IS SUPPOSED TO HOLD THE SET SPEED AND KEEP ITS DISTANCE FROM ANY VEHICLES IN FRONT OF IT IN THE SAME LANE. HOWEVER, IF THE SET SPEED IS 65 MPH THE VEHICLE 90% OF THE TIME WILL DRIVE AT 64 MPH WITH NO OBSTRUCTION AHEAD. IF ANOTHER VEHICLE IS DRIVING SLOWER THAN 65 MPH IN THE SAME LANE AND THE CLARITY IS APPROACHING IT, THE HONDA SENSING RADAR WILL NOT DETECT THE OBSTRUCTION AND NOT SLOW DOWN TO KEEP ITS PRE DETERMINED DISTANCE, WHICH CAN CAUSE AN IMMINENT CRASH. I HAVE HAD HIS MALFUNCTION ON BOTH OF MY 2019 HONDA CLARITY PLUGIN HYBRIDS AND MY FORMER 2019 HONDA INSIGHT. I HAVE BEEN INVOLVED IN OVER TEN NEAR-TOTAL CRASHES ON THE HIGHWAY DUE TO THIS MALFUNCTION. THIS VEHICLE IS DANGEROUS AND THE HONDA SENSING FEATURE A SAFETY HAZARD.

NHTSA ID

11344002

Incident

Aug 5, 2020

Mileage

8,740 mi

MY CAR IS LOSING POWER AND GETTING LOUD NOISE WHILE DRIVING ON AN UPHILL ROAD. I HAVE SHOWN MY CAR TO 3 DIFFERENT DEALERS AND THEY COULDN'T FIX IT. I HAVE SEEN MANY ONLINE REVIEWS WITH THE SAME PROBLEM AND STILL, HONDA IS NOT HELPING ITS CUSTOMER. *TR

NHTSA ID

11330558

Incident

Jun 15, 2020

Mileage

12,500 mi

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)

NHTSA ID

11288858

Incident

Dec 12, 2019

Mileage

8,790 mi

ON A RANDOM BASIS OUR NEW CLARITY SUDDENLY LOSES POWER AND SOUNDS LIKE WE HAVE SHIFTED INTO NEUTRAL EVEN THOUGH WE ARE JUST CONTINUING IN DRIVE MODE. THIS HAS HAPPENED SEVERAL TIMES A MONTH SINCE WE BOUGHT THE CAR IN JUNE 2019. WE HAVE HAD THE CAR TESTED AT THE DEALERSHIP WHERE WE BOUGHT THE CAR AND THEY COULD NOT REPLICATE THE PROBLEM. IN AUGUST THIS YEAR WE WERE MAKING A 2 HOUR DRIVE AND ON A TOLL ROAD WITH AN INCLINE IN RIVERSIDE, CA THE REVVING SOUND WAS REALLY LOUD AND WHEN I PUSHED THE GAS PEDDLE, NOTHING HAPPENED. I PULLED OVER TO THE SIDE OF THE HIGHWAY AND TURNED OFF THE CAR. I TURNED IT BACK ON AND PUT THE CAR IN HYBRID MODE AND OUT OF ELECTRIC AND PULLED BACK ON THE ROAD. THE EXACT SAME SOUND AND LACK OF ACCELERATION OCCURRED. WE CALLED THE DEALERSHIP AND THEY SAID TO USE AAA TO BE TOWED WHICH WE DID. AGAIN, OCEAN HONDA COULD NOT FIND AN ISSUE ON THEIR COMPUTER DIAGNOSTIC SYSTEM OR ROAD TESTING FOR 2 DAYS. WE CONTINUE TO HAVE THE ISSUE A COUPLE TIMES A MONTH IN VERY DIFFERENT DRIVING CONDITIONS, SPEEDS, MODES, ETC. WE CONTACTED HONDA AMERICA AND THEY HAD THE CAR TESTED AT OUR NEW LOCATION IN RANCHO MIRAGE AT HONDA OF THE DESERT. AGAIN, TESTING SHOWED NOTHING. HONDA AMERICA HAS OFFERED NO SOLUTION AND WE ARE NOW AFRAID TO DRIVE THE HONDA CLARITY FOR ANYTHING OTHER THAN LOCAL DRIVES. I PUT DATE OF WORST INCIDENT IN SECTION WHERE ASKED WHEN PROBLEM OCCURRED, BUT IT IS ONGOING.

NHTSA ID

11281806

Incident

Aug 10, 2019

Mileage

2,500 mi

TL* THE CONTACT OWNS A 2019 HONDA CLARITY PLUG-IN HYBRID. WHILE DRIVING 70 MPH UP A HILL, THE VEHICLE FAILED TO ACCELERATE AND LOST POWER. ADDITIONALLY, THE MILES PER GALLON FOR A FULLY CHARGED BATTERY WAS SUPPOSED TO BE 48 MILES; HOWEVER, THE ACTUAL RANGE WAS 38 MILES. THE VEHICLE WAS TAKEN TO NORM REEVES HONDA SUPERSTORE WEST COVINA (LOCATED AT 1840 E GARVEY AVE S, WEST COVINA, CA 91791, (626) 251-2995) TO BE DIAGNOSED. THE MECHANIC TEST DROVE THE VEHICLE, BUT WAS UNABLE TO DUPLICATE THE FAILURE. THE CONTACT WAS ALSO INFORMED THAT THE VEHICLE CHARGED AND OPERATED AS INTENDED. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS NOTIFIED. THE APPROXIMATE FAILURE MILEAGE WAS 2,200.

NHTSA ID

11208982

Incident

May 21, 2019

Mileage

2,200 mi

THE CAR DRIVES FINE WHEN THERE IS SUFFICIENT BATTERY. WHEN BATTERY LEVEL DROPS TO LOW (2 BARS) THE CAR DOES NOT RESPOND TO ACCELERATOR. THE ENGINE BECOMES SLUGGISH AND REVS UP QUITE A BIT. I HAVE DRIVEN ~650 MILES SO FAR AND THIS HAS HAPPENED 4 TIMES ALREADY. LUCKILY IT HAPPENED ONLY ONCE IN THE HIGHWAY WHERE THIS WOULD HAVE BEEN DANGEROUS AND LIFE THREATENING.

NHTSA ID

11204059

Incident

Apr 21, 2019

Mileage

600 mi