2021 Toyota Redundant Sienna

While braking and in a slight turn the vehicle lunges forward. I have learned to compensate for this but prior to compensating I was involved in a rear end crash that was the result of this defect. I was stopped behind this person when she pulled forward. I started pulling forward and she slammed on the brakes. I attempted to stop and the vehicle lunged forward striking her vehicle. The person rear ended claimed no injuries as well as uninjured children properly restrained in the vehicle. She was fully ambulating without complaint. She is now claiming injuries and filed a lawsuit.

The braking system will disengage randomly during braking for a stop. Results in the vehicle lunging forward. There is no warning when it happens and no codes. It has happened at least once a week if not more since gettingthe vehicle. I have brought it up to the toyota service center but they won't look at it without charging a fee.

A sudden feeling like the car isn't stopping when slowing down for a light when applying break. Here is more detailed kind of incident - A sudden feeling like the car isn't stopping when slowing down for a light or when braking down hill, but it happens at other times as well. Sometimes a normal traffic light. I'm braking and then all of the sudden the car feels like it isn't slowing down and kind of jumps and then I just make sure I keep my foot on the break to make sure veh stops I noticed it when I first got the vehicle every so often but when I hit about 40,000 miles got worse , but it seems to be getting worse Currently have 67,000 miles on vehicle, but just had service and it is great most of those miles are road miles it was doing it every so often, but now doing it even more often

The vehicle has had rocks get in the suspension 4 times so far which creates loud clunking noises and can cause a noticeable feel in the steering. The most recent time, after the rock entered the front end, the brakes were soft and required excessive pedal force followed by a clunk before the brakes abruptly applied. I like on a paved road with a rock driveway and it seems like the shielding for the front end is inadequate. I have friends with a 2022 sienna that live on a gravel road that have experienced similar issues.

The braking/throttle system malfunctioned. It is available for inspection. On multiple occasions, the vehicle braking system has engaged then disengaged before coming to a stop. When coming to a stop with the brake pedal depressed, the vehicle full disengaged braking while the brake pedal was still depressed. Luckily, the vehicle reengaged the brake before we were entered into cross traffic. On multiple occasions the accelerator pedal was depressed, and the vehicle proceeded into traffic, but then the throttle control disengaged, causing us to nearly have a collision. Luckily, the vehicle throttle reengaged before we were hit by another vehicle. Our safety feels at risk because we don't know if the vehicle will stop, causing us to be involved in a collision, and we will be at fault for the collision. We have taken it to the dealership multiple times, but they have not been able to reproduce the issue, and we cannot reproduce it ourselves. The conditions for the issue to occur do not seem to be consistent. We have documented dates and time when the issue has occurred, but the dealership was not able to find vehicle logs for those dates. Only the dealership and Toyota mechanics have inspected the vehicle. There were no warning indicators. The first documented occurrence was 9/26/2022 3:30PM CST.

Simalar issue to Toyota T-SB-0121-20 December 14, 2020 Sloshing or Splashing Noise Caused by Water Inside Doors The lower door seals are to tightly fitted and obstruct the door drainage holes. Debris builds up inside the drainage hole. In hard rain or car wash the door fills full of water causing potential for corrosion and damage to electrical components inside door.

While braking the brake pedal pressure on the brake pedal and the brakes themselves will lose pressure and you have to suddenly press harder on the pedal to keep stopping distance it happens randomly, and without warning I’ve had it into the dealer. They replaced the brake antilock pump for an unrelated reason as they say, there are no recalls I explained the problem to them. Several times before the brake pump was replaced. They said they know of the problem but don’t know of a fix, it’s quite dangerous when it happens