2023 Hyundai Tucson Brakes

I parked my car on a driveway with a slight incline. After putting the car in park, I stepped out of the vehicle and the car rolled back into the street. I brought the car back into the driveway, again put the car in park and engaged the parking brake this time. The car rolled back out into the street again. Thankfully, the grandchildren were not playing behind the car and there was no one was parked behind me.

I leased a 2023 Hyundai Tucson AWD, and approximately four months after leasing, I began experiencing vibration and shaking when braking, especially at higher speeds and downhill. I brought the issue to a dealership, and while replacing the brake pads temporarily resolved the problem, I am concerned it will return, as many other Tucson owners have reported similar recurring issues even after rotor or pad replacement. This raises concerns about a potential underlying defect in the braking system that may not have been properly addressed. The issue poses a serious safety risk due to reduced control during braking, and I am documenting this in case it recurs. No warning lights appeared, but the problem was physically noticeable and confirmed by the service center. The vehicle is available for inspection upon request. I have a video i can send as per request i am not able to attach.

My vehicle has been in for service 4 times for the front brake rotors warping. The dealer/manufacturer is not able to fix nor diagnose the root cause of the issue. They have replaced the rotors twice and turned/resurfaced the rotors twice - all in 26000 miles. The dealer has all but given up on the issue - and has referred me to Hyundai Customer Care (Corporate) where I have logged a case. In my discussions with the dealer service manager - he stated there are "half a dozen" other cars he is aware of with similar issues. In online Hyundai owners forums this is also a "known" issue that apparently Hyundai either chooses not to fix or cannot determine how to fix.

While driving my new Tucson, the emergency brake randomly activated bringing the car to a jarring stop. Very scary and its happened twice now. Dealer won't help as its intermittent so very frustrating.

Vehicle was purchased new from local Hyundai dealership in Dubuque, IA on November 17, 2022 and delivered November 22nd. Vehicle had just under 200 miles on odometer. Brake system was working well at that time. On January 21, 2023 I stopped for a red light. After a few seconds the brake pedal started going down and went completely down. Mileage at that time was just over 1700 miles. I took the car into the dealership on January 23rd and they checked the system and said that it was normal. The shop supervisor said that it was not a problem that when the pedal went down it was applying more pressure to the brake system. I disagreed with them as this is usually the fault of master cylinder seals leaking. They brought a newer vehicle into the shop and it had the same problem so no repairs were made. I believe this is an accident waiting to happen and I would like to have the problem corrected. This appears to be a problem with Hyundai vehicles. Our vehicle is a Hyundai Tucson.