2021 Toyota Sienna Other or unknown Problems

“When breaking, mostly during downhill, the brakes feel like they simply “let go” for an instant. Most times this is very short and It feels like a typical downshift during breaking in an ICE car. However, last time it really gave me a lurch and I almost ended up falling off a cliff face. Many reports all over the internet but nothing from Toyota.”

“1st. Brake sometimes get very stiff can’t press down and becomes normal after a few seconds or a few press on the brake pedal. (5 months) 2nd. A lot of wind noise coming from driver side windshield starting at 65mph. Complain to 2 dealers both said they test drove the same car but I don’t see any other Sienna around. They lied (1st day I took possession of the car) 3rd. The middle row seat rail are very hard to slide back and forth. (1st day)”

“There has been several incidents when I step on the brakes and the vehicle seems to accelerate forward after what feels like an attempt to find the right gear when decelerating. This occurs infrequently but usually when decelerating along with an external factor. I was able to consistently replicate when I’m coming off the highway onto a service road then have to make quick turn at a corner. It feels as if the vehicle is trying to search for a gear and once it finds it there’s a momentarily acceleration forward.”

“While slowing down from highway speed 55mph to about 30 mph preparing to turn right, I heard a huge explosion (sunroof). Thinking it was overhead, I slowly pulled back the sunscreen which blocks out the sun from the roof, realized it was full of broken glass and immediately closed it. This was a terrifying event and could of easily caused serious injury or worse. My dog was riding in a secured dog crate in the rear of the van. The van was taken to the dealership for investigation and repair. …”

“The breaks give out to a point where you run the risk of running into someone or something. We've visited Toyota 3 times now complaining of this issue yet they just state it's the regenerative breaks and how they operate. Although the breaking never got to this level of safety concern until we reached around 30,000 miles. I filed a complaint with Toyota that resulted in nothing being done. A couple examples would be sitting at a stop light and the breaks release almost causing us to run into the car in front of us. …”