2015 Honda Odyssey Driver assistance Problems

I am submitting this urgent complaint regarding my 2015 Honda Odyssey, equipped with the 3.5L V6 engine referenced in (TSB) 20-023 which acknowledges that the front rocker arm oil control valve (spool valve) gasket may fail and leak engine oil directly onto the alternator located beneath it. This condition can cause alternator contamination, charging system failure, electrical malfunction, and potential fire risk due to oil exposure to electrical components. Despite knowledge of this issue, Honda did not notify vehicle owners and did not initiate a recall. Before the first breakdown occurred, I experienced a frightening and dangerous incident while in traffic. Without any human interference and without my pressing the accelerator, the vehicle suddenly accelerated and moved forward on its own, nearly striking the vehicle in front of me. I had to react immediately to prevent a collision. This unexpected surge was extremely disturbing and appeared to involve an electrical malfunction. Shortly thereafter, the vehicle broke down. After the first breakdown, I replaced the battery. Within approximately one hour of driving again, the vehicle failed again due to alternator failure. I was stranded at night, in darkness, alone, and exposed to active traffic. This created an immediate and foreseeable risk of collision, serious bodily injury, or death. Another car in that area around that time broke down on the highway I was expected to use and was hit by a semi on 95 and the driver of the stopped car was killed. That could have easily been me. A defect that can cause sudden electrical malfunction, unintended vehicle movement, loss of charging capability, vehicle disablement in traffic, and potential fire hazard constitutes a safety-related defect under federal motor vehicle safety standards. I respectfully request that you Initiate a formal investigation Evaluate whether a recall is warranted. Require reimbursement for repair costs Thank you very much.

NHTSA ID

11721126

Incident

Oct 7, 2025

I am deeply concerned about the sudden breakdown of my vehicle due to the spool valve leaking onto the alternator and caused the loss of power and stalling of the vehicle while driving out of town and on an Interstate. This was an extremely scary time for me and my family being stranded on an expressway for over an hour and trying to figure out how to get my kids and family to safety. I have heard of others having the same issue with the same make and model vehicle and their repairs was covered by Honda. I don't understand why my issue would be any different and why my repairs are not currently covered by the Honda service bulletin. I would extremely hope honda take a deeper look at including my Vin in the service bulletin. I now understand this to be a well known issue as published in Honda Technical Service Bulletin TSB [XXX] However, no information was sent to owners even though Honda has known about the issue since at least March 2020. This puts unnecessary safety risks for those driving with oil leaking onto the alternator resulting in electrical system shutdowns and issues driving. I believe a recall and safety notice should be issued. Yes, the component was inspected by Honda and replaced. The first indicator was the ABS system warning light along with many other systems shutting down. This occurred at a high-rate of speed on the freeway. I am frustrated Honda has known abut this issue for many years, but has not informed owners nor offered to correct the issue leading to safety issues and costly repairs. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6) Look forward to hearing better news from Honda and my repair coverage along with Honda standing by its product reliability.

NHTSA ID

11580490

Incident

Apr 22, 2023

WHEN DRIVING THE VEHICLE THE DASH WILL READ FWC SYSTEM FAILURE. THIS SEEMS TO DEACTIVATE THE LDW AS WELL. HONDA DEALERSHIP DIAGNOSED MICU AS NEEDING TO BE REPLACED.

NHTSA ID

11373945

Incident

Jun 15, 2020

Mileage

65,908 mi

THE BRAKES ARE GETTING LOWER EVEN WITH A FULL RESERVOIR. AFTER HONDA DEALER FLUSHED, BLEAD AND RESTORED THE BRAKE FLUID, THE VSA MODULE FAILED AND CAUSED AUTONOMOUS BRAKING AND WORSENING OF PEDAL SOFTENING AND BRAKING CONTROL ASSIST. THIS ISSUE HAS BEEN RECALLED WITH PREVIOUS YEARS AND SHOULD BE ADDRESSED AGAIN BY NHTSA AND HONDA. BRAKES CAME ON WHILE DRIVING CAUSING BURNING UP OF PADS AND ROTORS. VERY BAD SMELL COMING FROM BRAKE AREA.

NHTSA ID

11088769

Incident

Apr 16, 2018

Mileage

53,000 mi

TL* THE CONTACT OWNS A 2015 HONDA ODYSSEY. WHILE PARKING THE VEHICLE WITH THE BRAKE PEDAL DEPRESSED, THE VEHICLE INDEPENDENTLY ACCELERATED WITHOUT WARNING. A LOCAL DEALER WAS NOT CONTACTED. THE VEHICLE WAS NOT DIAGNOSED OR REPAIRED. THE MANUFACTURER WAS NOT MADE AWARE OF THE FAILURE. THE APPROXIMATE FAILURE MILEAGE WAS 20,000.

NHTSA ID

11061176

Incident

Jan 7, 2018

Mileage

20,000 mi

TL* THE CONTACT OWNS A 2015 HONDA ODYSSEY. WHILE DRIVING VARIOUS SPEEDS OR WHILE THE VEHICLE WAS PARKED, THE PASSENGER SIDE VIEW MIRROR CAMERA FAILED TO DISPLAY IMAGES ON THE INTERIOR MONITOR WHEN THE PASSENGER SIDE TURN SIGNAL WAS ACTIVATED. ALSO, THE REARVIEW CAMERA GRID FAILED TO DISPLAY ON THE MONITOR WHEN IN REVERSE. THE VEHICLE WAS TAKEN TO MCCONNELL HONDA (2840 EASTERN BLVD, MONTGOMERY, AL 36116 (334) 271-2500) FOUR TIMES, BUT THE CAUSE OF THE FAILURE COULD NOT BE DIAGNOSED. THE DEALER STATED THAT WHEN THE EXTERIOR TEMPERATURE WAS HOT, THE CAMERAS WOULD FAIL TO OPERATE CORRECTLY. A DIAGNOSTIC WAS PERFORMED, WHICH WAS UNABLE TO LOCATE A FAILURE CODE. THE MANUFACTURER WAS NOTIFIED, BUT DID NOT ASSIST. THE FAILURE MILEAGE WAS APPROXIMATELY 17,000.

NHTSA ID

11011276

Incident

Jun 2, 2016

Mileage

17,000 mi

TL* THE CONTACT OWNS A 2015 HONDA ODYSSEY. WHILE THE VEHICLE WAS IDLING WITH THE BRAKE PEDAL DEPRESSED, THE VEHICLE ACCELERATED INDEPENDENTLY TO 5 MPH. THE CONTACT REAR ENDED THE PRECEDING VEHICLE WITHOUT WARNING. THE AIR BAGS FAILED TO DEPLOY. A POLICE REPORT WAS NOT FILED AND THERE WERE NO INJURIES. THE VEHICLE WAS TOWED TO THE DEALER, BUT THE FAILURE COULD NOT BE DUPLICATED. THE MANUFACTURER WAS NOT MADE AWARE OF THE FAILURE. THE FAILURE MILEAGE WAS 21,000. THE VIN WAS NOT AVAILABLE.

NHTSA ID

10954346

Incident

Feb 9, 2017

Mileage

21,000 mi

TL* THE CONTACT OWNS A 2015 HONDA ODYSSEY. WHILE DEPRESSING THE BRAKE PEDAL AND REVERSING, AN ABNORMAL NOISE WAS HEARD AND THE VEHICLE ACCELERATED INDEPENDENTLY. THE CONTACT MENTIONED THAT THE VEHICLE INCREASED TO THE MAXIMUM RPMS. THE VEHICLE WAS TOWED TO A DEALER WHERE THE FAILURE WAS UNDETERMINED. THE VEHICLE WAS NOT REPAIRED. THE VIN WAS NOT PROVIDED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE APPROXIMATE FAILURE MILEAGE WAS 24,000. .....UPDATED 04/15/16 *BF *CN

NHTSA ID

10820505

Incident

Jan 13, 2016

Mileage

24,000 mi

ON AUGUST 9, 2015, WE WERE DRIVING HOME FROM VACATION FROM CEDAR POINT, OHIO TO PITTSBURGH, PA. THIS IS ABOUT A 200 MILE TRIP. THE VEHICLE RAN SMOOTHLY THE ENTIRE TRIP UNTIL I LEFT THE TURNPIKE OF DRIVING 60-70 MILES PER HOUR AND THEN BEGAN DRIVING ON A ROAD WITH A 40 MPH SPEED LIMIT. ALL OF A SUDDEN I WAS AT A RED LIGHT WAITING IN TRAFFIC. AS SOON AS THE LIGHT TURNED GREEN, I PRESSED THE ACCELERATOR. WE BEGAN ACCELERATING TO 25 MILES PER HOUR BUT KNEW SOMETHING WAS WRONG. MY CAR WOULD NOT LEAVE FIRST GEAR. THE GAUGE ON THE DASHBOARD WENT FROM 1-7 GEAR BUT NOTHING HAPPENED. I WAS IN THE PASSING LANE TRAVELING 15-20 MILES PER HOUR IN A 40MPH ZONE. I THEN PROCEEDED TO CHANGE LANES WHEN ALL OF A SUDDEN THE ENTIRE CAR JUMPED AS IF IT HAD A MIND OF ITS OWN AND BEGAN TO ACCELERATE. THE CAR BEGAN DRIVING FASTER BUT NOT ANY FASTER THAN 40 MPH. AGAIN, ALL WE COULD HEAR WAS ROOOOOOOM AND THE DASHBOARD INDICATOR LOOKED LIKE WINDSHIELD WIPERS GOING FROM LEFT TO RIGHT. THE CAR WOULD NOT LEAVE 2ND GEAR. THIS CONTINUED TO HAPPEN OVER AND OVER AGAIN AT EACH RED LIGHT. SINCE THIS WAS A SUNDAY, THE SERVICE CENTER WAS CLOSED. IT WASN'T UNTIL WEDNESDAY THAT THE DEALERSHIP WAS ABLE TO TAKE A LOOK AT MY VEHICLE. SINCE NO SENSORS INDICATED A PROBLEM, THEY STATED THERE WAS NOT A PROBLEM AND THERE WAS NOTHING THEY COULD DO. I AM NOT FABRICATING THIS INCIDENT ONE BIT AND AM AFRAID OF THIS HAPPENING AGAIN BUT HAVING A DIFFERENT OUTCOME. IF I EXPERIENCED THIS PROBLEM AND THE DEALERSHIP DISMISSED ME BECAUSE A SENSOR DID NOT INDICATE A PROBLEM, WHAT DOES IT TAKE FOR A SENSOR TO TRIGGER? THIS IS A LEASED VEHICLE OF 1 MONTH AND I AM VERY CONCERNED OF IT HAPPENING AGAIN OR WORSE. I AM A SINGLE MOTHER OF 3 AND SHOULD NOT HAVE TO WORRY ABOUT THE SAFETY OF MY CHILDREN AND MYSELF IN A 1 MONTH OLD VEHICLE WITH LESS THAN 2,000 MILES.

NHTSA ID

10761913

Incident

Aug 9, 2015

Mileage

1,900 mi

ON FEBRUARY 1, 2015, VDC (VEHICLE DYNAMIC CONTROL), LDW (LANE DEPARTURE WARNING), AND FCW (FORWARD COLLISION WARNING) ALL FAILED SIMULTANEOUSLY WHILE DRIVING CONSERVATIVELY AT 25 MPH ON SNOW COVERED ROADS DURING HEAVY SNOW FALL. ALL THREE SYSTEMS REMAINED FAILED FOR THE REMAINDER OF THE KEY CYCLE, WHICH WAS APPROXIMATELY 45 MINUTES. DURING OTHER DRIVING LATER THAT DAY, LDW AND FCW RECOVERED, AND THOSE LIGHTS WENT OUT ON THE DASH, BUT VDC REMAINED FAILED. THE VAN SAT FOR A WEEK, THEN I DROVE IT AGAIN ON FRIDAY FEBRUARY, 6, 2015, FOR APPROXIMATELY 20 MILES. AT THE VERY END OF THAT TRIP, THE VDC RECOVERED, AND THE LIGHT WENT OFF. I WENT TO GERMAIN HONDA OF ANN ARBOR, MI TO HAVE THE TROUBLE CODES READ. THEY TOLD ME THERE WERE NO CODES STORED. *TR

NHTSA ID

10700732

Incident

Feb 1, 2015

Mileage

2,000 mi