2024 Toyota Sequoia Hybrid

When driving down steep grade, (mountain pass) front brakes will begin to vibrate violently. Very scary when driving the vehicle. When you reach the bottom of the steep incline, the brakes begin to function normally again. I have had this happen on 3 different occasions. I informed the dealership of this but they didn't see anything abnormal when they inspected the brakes. The did not attempt to reproduce the problem as there are no extended steep grades nearby to drive down. There were no warning lamps displayed.

On three separate occasions we have lost braking power preventing instantaneous stopping, and control of the vehicle. They partially work when your foot is pushing on the pedal all the way to the floor. This occurs autonomously without warning and the following occur: Lose breaking power, inability to brake and stop at safe distances instantaneously and momentarily, Brake ABS alarm, Parking Support Brake Malfunction ("Visit Your Dealer"), Check Engine, Collision Assistance fails, and Traction Control fails. The first occurrence my spouse was driving the vehicle on a 65 MPH three lane highway that at the time was evening rush hour. She had to decrease her speed to 30 MPH in a 65 MPH speed zone in order to slow the vehicle enough at a safe distance from the vehicle in front of her, then continue at a safe distance as traffic ahead of her excelled. Had this happened traveling the speed limit, and had to stop abruptly, this could have either caused severe bodily injury and/or death to her and the vehicle behind and in front of her, and other adjacent lanes. The second occurrence after the dealer looked at it (as covered under warranty), we received the vehicle back. The next day the brakes went out and alarms appeared once again as she pulled out of the driveway. I pulled the vehicle in the driveway for her and couldn't stop and almost drove through my garage at only idling speed. The third occurrence was most recently after an oil change. I drove the vehicle around the block and again, the brakes went out and alarms appeared once again. We have owned this vehicle since May 10th and it has been at dealerships for repair for at least 35 days minimum. On the first occurence they had a regional tech/engineer inspect the vehicle. Nothing was found as problematic and a factory reset was performed - nothing replaced. The second occasion - same outcome... nothing fixed or replaced. The vehicle is in the shop again for the same problem.

Brand new 2024 brakes squeaking. Cold starts, and now even when car has been running all day. When breaking the brakes squeak very loud. Called the dealer they said this is normal. Has not been inspected or reproduce the issue by the dealer. No warning lights appeared yet. We feel it might be a safety issue since it's a family suv brakes may fail.