Integrated Brake Accuation Unit failed per dealer repair location. Codes indicated on attached repair invoice receipt. (Document is Uploaded). This was a very expensive repair. Per dealer service advisor and technician they had never seen this before. 2 brake lights on the dash indicated major brake failure. The vehicle was immediately taken to the dealer for repair. See additional details regarding concern, cause. correction, and parts replaced on invoice. If this had not been repaired immediately, this could have put others at risk and caused an accident. Although there are several internet references to brake problems with this model of Hundai Ioniq Hybrid, there are no recalls. The powertrain and engine are warrantied for 100K miles and the batteries have an original lifetime owner warranty. Due to the critical nature of a braking system, I believe braking systems on hybrids for this part should have a lifetime warranty. I want to make it clear that parts that wear out due to use for example brake pads, rotors, master cylinder etc. are not what I am referencing. Since the integrated brake accuation unit is a part commonly seen on hybrid products, I think this a part that warrants investigation and recall. This investigation may go beyond the Hyndai hybrid products. Due to the expense of the repair, I believe this repair could put the owners of all hybrid auto products at risk.

- Jacksonville, FL, USA

Driving on the northbound 3-lane section of I-75, I moved from center lane where I was behind a huge semi truck that blocked vision ahead, so I moved into the left lane when all traffic had passed and it was clear. Then immediately ahead at approximately 5 car lengths from me in left lane, a large SUV had stopped dead in that left lane of interstate along with other vehicles ahead of him. There was no shoulder available, just continuous concrete jersey rail, and no opening on my right to go to. Although I slammed on my brakes and pressed them as hard as possible, my 2017 Hyundai ionic hybrid car did not stop, its airbags did not deploy, the seat belt did not lock leaving enough slack that my chin and chest slammed into steering wheel as I ran into rear of the stopped SUV causing him to run into SUV in front of him. Their airbags deployed, mine did not. Although the fault was entirely mine in terms of striking the first car, I didn't understand why my ioniq didn't stop better or why my airbag didn't prevent me from striking the steering wheel. I did tell the highway patrol officer that I had struck my chest and chin quite hard on the steering wheel, but had no external injuries. The upset and regret over the incident was enough to put those questions out of my mind for the last two days, until today Friday 6/21/19 when I went to the auto collision repair center and spoke to the manager. He told me that I should report the situation with the seat belt, airbag and ABS brakes not performing as they should, and make Hyundai aware of it as well, and he provided me the NHTSA information. I also texted the service manager at the Hyundai dealership where I leased this vehicle to advise him of what happened. He has not yet responded. Thus this report.

- Bradenton, FL, USA