Periodically, when I press on the brake to slow down for a red light or stop sign or to make a right hand turn, my van, instead of slowing down, surges forward as if it is accelerating. It feels as if my vehicle jumps forward. I am able to stop the vehicle by slamming on my brakes. I believe my safety and the safety of others is at risk each time this occurs as I worry it will happen when I need to stop suddenly for a pedestrian or for another vehicle. The problem has not been reproduced. The issue occurs sporadically. It may be weeks before it reoccurs. I went for a ride along with a service manager but was unable to reproduce the issue. It has not been inspected except at the dealership. No warning lamps appeared. This issue has been occurring since June 21, 2021. I have kept a log since then.

- Pensacola, FL, USA

Braking system disengages briefly when coming to a stop. Have been told its the transition from EV mode to gas but it poses a safety concern. The problem was replicated by Carmax service and they have sent me to toyota dealership.

- Louisville, KY, USA

went to stop, so I pressed on the brake pedal. as I slowed down, the brakes released and the vehicle surged forward suddenly as if the accelerator pedal had been pressed. i panic stomped the brake pedal and the vehicle started braking again with a sudden hard stop. The pedal had to be lifted and depressed again for the brakes to reactivate. during this short time, the vehicle surged forward and accelerated. No, I was not pressing the accelerator pedal. Yes, the vehicle is available for inspection. The vehicle surged forward suddenly while braking. I was not pressing the accelerator pedal. There was no one in front of me, but had there been, I am unsure if the vehicle would have stopped in time, or if the AEB would have even worked, seeing as I was pressing the pedal and the brakes were not working. toyota has said that nothing is wrong, and that I am feeling the "transition" between regen braking and friction braking, except, the vehicle GAINED speed, as if power was being applied to the electric motors instead of regen resistance drag. The brake pedal no longer worked, and the fake "tachometer" went from in the "CHG" section of the tach to the "neutral" position, despite me pressing the brake pedal. I did not have time to see if it went up, as I had to lift up and stomp on the pedal again to get it to actually stop at the stop sign. I have been unable to reproduce this issue on demand, as I cannot quite figure out the conditions that trigger it, as it seems completely at random when it does it. I have some ideas, but toyota has been unwilling to listen or address it. every time a dealer tech sits in the van with me and connects their computer, it won't do it, and they won't leave it connected to the car long enough for me to drive/record a whole day or two to get it triggered. There are no warning lights or messages on the dash.

- Duluth, MN, USA

2021 Toyota Sienna Hybrid. The following has been true from the beginning of ownership of new Sienna. When braking for a turn or stop, as speed drops below about 10-15 MPH, there can be a sudden power/speed surge and lurching forward that lasts for 1-2 seconds. This feels as if there are no brakes at all for those 1-2 seconds Dealer says that that's just the way that hybrids are, that once your speed drops below when the EV system had been regenerating electrical energy. But it is scary because, if for example a child jumped in front of the car at that moment, there may not be adequate braking. The dealer says there is no software fix to smooth the transition from regenerative braking to "normal" braking. WHY ISN'T THERE??

- Cary, NC, USA

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.

- Effort, PA, USA

odd random surge while lightly breaking and slowing down. Very scary and concerning. Braking while coming to a stop sign or light, it surges forward while brakes are applied. It happens several times a week while driving short distances

- Raleigh, NC, USA

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.

- Ravenel, SC, USA

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

- Fort Mohave, AZ, USA

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.

- Malcolm, NE, USA

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.

- Cabot, AR, USA

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

- Fort Myers, FL, USA

I would like to make formal complaint in regards to a manufacture defect. I purchased my Toyota Sienna XSE brand new in August of 2021 at Cerritos Toyota in California. On December 24th at approximately 1:30 p.m. on Christmas eve, after filling up gas at Sam's club in Fountain Valley, CA. I pull out on to the street heading northbound on Warner approaching intersection as I come to complete stop on red. All of a sudden, my Sienna completely shut itself off and the engine light came on. I put it back on park and restart the car. As I attempt to accelerate forward. The car jerk and the brake didn't work and the engine light came on. Fortunately, I was able to make a U turn and pull into a gas station near by ( Shell) and I thank the lord almighty there was no car right behind me. I could of gotten rear ended. It was the most terrifying moment of my life. My wife and I was in the car at the time of the incident. We waited patiently over an hour for Triple AAA to have it tow the nearest dealership next to my house in Long Beach, CA. My 2021 Toyota Sienna currently has 52,023 miles and sitting at the dealership to be repair at Long Beach West Coast Toyota. I have contacted Toyota of this incident and they refused to fully covered repair instead they offered me 700 payment assistant the rest would come out of my pockets. I believed the car should be part of the campaign recall and nothing should come out my expense. I would like you you guys to investigate the incident and look into this matter as soon as possible because there thousands like my mind that could there have the same issue but was not part the campaign recall. A bulletin was published on April 13, 2022 affecting 2021 -2022 Toyota Sienna. Production Period March 3rd, 2020 through April 7th 2022. Manufacture's Campaign Number: Toyota: 22TB03

- Long Beach, CA, USA

The Breaking system failed to stop the Van.

- Lewisville, TX, USA

when braking the car lunges forward on its own. this has happened multiple times and others speak of it too

- Conroe, TX, USA

The vehicle gets a jolt of power or speed while braking slowly or coming to a stop. This could result into an accident. This was addressed to multiple Toyota dealers and the problem was unidentified or undetectable to the technician multiple times. The problem is reported by several Sienna forum users but it is not being fixed by Toyota dealers.

- Coppell, TX, USA

I currently have 35,000 miles on my 2021 Toyota Sienna. Ever since I passed 30,000 miles I-??ve noticed a difference in the braking. When I start to brake it feels normal and then all of a sudden it feels as if there-??s no braking and the van surges forward for a fraction of a second before the brakes engage again. I-??ve experienced this on highway exit ramps, braking before turning into parking lots and while coming to a stop at traffic lights. It usually happens around 40 mph & 20 mph. It does not happen every time I brake but it happens multiple times every day. I took it to my Toyota dealer but they told me they could not replicate the brake malfunction. There are a number of other Sienna owners who have documented their same experiences with surging brakes on an online Toyota Sienna owners forum. I have not had an accident yet but I find this brake surge very concerning.

- Lititz, PA, USA

Occasionally when we hit the brakes the car surges forward ever so briefly and then the brakes finally catch. So far this has only lasted for a second or so, but we are concerned that it could get worse or not stop at all. My car is at the dealership now. They were unable to duplicate the issue. It has been happening mostly while driving at higher speeds (45-55 mph) and then needing to stop for a traffic light or similar. They were not testing it in this same situation. There were taking it out in stop and go traffic. They kept it overnight to try again tomorrow, but the tech didn-??t seem to be taking it very seriously saying he wasn-??t get paid for it since it-??s still under warranty and he-??s not seeing the issue. They checked the computer for error messages and said they found none. I haven-??t noticed any warning lights turn on. This is very disconcerting. It has happened multiple times since we purchased the car in Sept 2021.

- East Windsor, NJ, USA

When slowing the vehicle to come to stop the brakes feel as if they release. Have to give more pressure to the pedal for a confident stop. It is intermittent. Dealer unable to duplicate. Others on forums have same issue.

- Laguna Niguel, CA, USA

When braking under a load - such as braking while descending a hill - the vehicle will be slowing as anticipated when the brakes are applied, and then for a split second the vehicle feels like the brakes disengage. The pedal pressure doesn't change. The vehicle may not actually speed up, but it definitely feels like it's no longer decelerating. Then a split second later the brakes kick in again and the car responds as expected. This happens nearly every day I drive the vehicle and has since it was new. I've got 28000 miles on it now. I've not hit anything as a result, but it makes for a stressful few seconds - even though I now anticipate it will happen. The explanation I've been given is that the sensation of momentary brake failure is the vehicle transitioning between regenerative braking and mechanical braking. However, this definitely doesn't seem like a normal and acceptable way for a vehicle to function.

- Hot Springs, SD, USA

At 7:35am on 7/20/2022, I was traveling south on Clementa Ave SW in Monticello, MN. The conditions were dry and the sun was out. As I approached the intersection of 127th St NW, I began to slowly press the brake pedal. The vehicle started slowing down, but approximately 5 seconds after pushing the brake, the vehicle automatically let off the brakes, the vehicle lunged forward for about 1-2 seconds, even though I was continuously pushing on the brake pedal. The vehicle-??s brake system then re-engaged and the vehicle stopped. This is not the first time this issue has happened and the dealership does not have any resolution to this issue. They attempted a software update, even though my VIN is not included in previous brake issues. This issue happens daily and poses a safety risk if I were attempting to brake behind other vehicles. The release of the brakes and lunging of the vehicle should not happen and feels like the vehicle is out of control.

- Monticello, MN, USA