2022 TOYOTA SIENNA Service Brakes Problems

The 2022 Toyota Sienna temporarily accelerates or surges forward while braking, or has a momentary loss of braking / deceleration before it re-engages in braking.

For over a year now, I have been experiencing a random issue in my van with the brake system. It feels like a slippage when I hit the brakes to slow down and it will randomly feels like something slips and just give gives out and gets loose and like you are free falling until the brakes grab and actually stop. I have had it in the dealership twice to fix this issue. Last year they reprogrammed the brake actuator assembly control module, and it worked for a while, but then once again after several months, it started again and the second time I took it in they drove it around to try to get it to mimic the problem, but was not able to so Couldn’t do anything about it and just said to watch it and see if it became more frequent. They also said that once you have the actuator reset the computer shows updated and can’t redo it.The problem with this issue is that it is random and sometimes it’s less and sometimes more and I can’t give specific dates because of the randomness of the problem. I have never not had it to stop, but I am including my two invoices from Toyota of Richardson where I’ve had it seen as well as the research that I have looked up in different forums where other people are describing the very exact same problem with their vehicles. [XXX] . It is scary because you don’t know if it’s going to stop or not but so far it has. [XXX] . There is an issue, but don’t know how to permanently solve it or know for sure what it is. The forum does explain some different things because of the vehicle being hybrid, but who knows whether that’s it. Please look into this and advise because I do not wanna wait until this is a problem and I have a wreck because I am not able to have my brakes work Correctly. P.s. The dates entered for the incident below is not accurate due to obviously the issue being random and ongoing not just one time.Thanks. [XXX] . INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Brakes release briefly when slowing to a stop. While slowing to a stop with steady pressure on the brake pedal, the braking action will momentarily give out, resulting in the vehicle lurching forward beyond the anticipated stopping/slowing distance before the braking action re-engages. This has resulted in near collisions with cars, bikes, and pedestrians as the vehicle suddenly stops slowing without warning and unexpectedly increases stopping distance. The problem is intermittent and difficult to reproduce, but has occurred repeatedly over at least 6 months of ownership. No warning lamps, error messages, or other related symptoms from the vehicle either before or after occurrences of the problem. Has been taken to the dealership for an update to the vehicle but it didn’t fix it. There are multiple reports online and multiple lawyers talking about this.

When braking and coming to almost a complete stop, the vehicle will randomly lurch forward. This situation has caused me to run stop signs and almost hit pedestrians on crosswalks. This failure has been independently observed by myself, wife and mother. The vehicle did not display and warnings prior to the failure. The vehicle has not yet been inspected or reproduced by a third party.

When break to slow down the car it accelerate instead.

I am writing to formally raise a serious and unresolved safety issue with my 2022 Toyota Sienna. The braking system on the vehicle behaves abnormally: when the brake pedal is pressed, the van does not stop immediately. In fact, it momentarily accelerates before decelerating, an extremely dangerous malfunction that has nearly led to multiple accidents. I have brought this issue to your attention several times: • In 2022, I contacted O'Regan's Toyota, the Halifax dealership, which has been unable to diagnose or repair the issue to date after several visits. • In 2023, I contacted Toyota Canada directly. I was referred to the dealership in Halifax. • The Halifax dealership has been unable to diagnose or repair the issue to date. • Despite the unresolved nature of this problem, the dealership has recently asked to charge me diagnostic fees for the same issue, one that remains unsolved and is clearly a manufacturer-level safety defect. This is not a minor inconvenience; it is a fundamental failure of the braking system and presents a critical safety hazard. The fact that this issue persists without a resolution, and that I am being asked to pay diagnostic fees for a problem that Toyota has not addressed, is unacceptable.

When decelerating, particularly on hills or into corners, there is an intermittent surge that occurs after the brake pedal has been depressed. It feels as though there is a release of the braking action, this is unsettling as if you are starting to approach a vehicle or pedestrian, this sudden "delay" of braking could result in contact with other objects. We have changed our driving behavior as a result of this. We reported this behavior at 5000 miles and there was not a solution until last year. We were not notified of this, and our vehicle is now out of warranty. Toyota has released as of last year a TSB related to programming and we are going to pay out of pocket $300 this week to get that TSB applied. This doesn't seem fair to consumers. You can see this is not an isolated problem here: [XXX] , a 2025 and 2024. In both of those vehicles, this behavior is not present. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6) INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

When braking there is a lunge forward sensation that causes the van to propel forward a little. The happens intermittently and can cause scares especially when driving with children. A T-SB-0047-24 was applied and still experiencing the same issue as it did not solve the issue.

What component or system failed or malfunctioned, and is it available for inspection upon request? CONSISTENT DECELERATION DURING BRAKING How was your safety or the safety of others put at risk? CONSISTENT DECELERATION CEASES FOR PERIOD OF 1-2 SECONDS Has the problem been reproduced or confirmed by a dealer or independent service center? NOT YET Has the vehicle or component been inspected by the manufacturer, police, insurance representatives or others? NO Were there any warning lamps, messages or other symptoms of the problem prior to the failure, and when did they first appear? NO, ALTHOUGH OTHER OWNERS HAVE EXPERIENCED THE SAME

When braking, the vehicle "releases" and lurches forward at a faster rate, but then catches again and continues to brake as it was before. It does not flash or light up on the dash with any issues when this happens. We have tried to find how to specifically recreate this issue to show to the dealership, but it just happens randomly anywhere from 2-12 times a day. This is especially terrifying coming down steep hills or taking quick offramp with stopped traffic in front of you. It began about a year and a half ago and used to take place once every few weeks, it is now happening daily, with increased "release" strength and time. It is still only about 1-2 seconds of released brake pressure, but again is terrifying when behind the wheel and expecting your vehicle to continue to brake as normal while foot is on the pedal. The brake pedal does not depress further or move from its position when braking. The car is acting and performing just as it should be 'normally', except that the brakes give way for 1-2 seconds.

During braking, I occasionally get the unexpected feeling that the car isn't stopping. It presents a risk to safety. The problem remained even after I paid for the TSB. There is no pattern to it.

Unexpected sudden acceleration (when braking) as I was slowing down from exiting a highway, just as I was approaching full stop, it felt like the regenerative braking stopped grabbing momentarily and I violently lurched forward for what seemed like a feet or two. I thought it was a fluke back then and thought nothing of it. It just happened again today as I approached a stop sign - again as I neared complete stop with brake depressed it felt like the brake stopped working for a second and the car again lurched forward violently as if I had lost control for what seemed like a foot. Would have hit the car in front of me if there was one.

Brakes randomly feel like they are slipping when I go to stop, could be a flat surface, but almost always if I am coming to a stop on a bumpy surface.

Vehicle suddenly accelerates when depressing the brakes (lurches).

On May 18, 2025, 4:00pm, my wife was applying brakes to stop for a stop sign at a T-intersection. Suddenly, the car lurched forward and accelerated uncontrollably. Despite her attempts to stop, her vehicle crossed four traffic lanes, vaulted over curb, nosedived into turf, and then crashed through brick wall into a fire station. My wife was unable to brake and stop the forward progression of the vehicle. My wife steered to avoid hitting trees but could not avoid the brick of the fire station wall. The airbags did NOT deploy. My wife sustained back injuries and bruising of the front torso. Her right foot is bruised from pressuring the brake pedal. The vehicle sustained heavy damage as did the fire station.

The brakes temporarily let up and the vehicle lurches forward before the brakes re-engage, resulting in an unpredictable, delayed stop. It is unpredictable and can result in the driver's stop being dangerous. This usually takes place at stop lights, stop signs, and parking spots, where the vehicle is under 20mph. The car sometimes does not brake as it should, meaning that the nose of the vehicle or the majority of the vehicle will extend past a stop sign or stop light, or contact in a parking lot could occur. The dealer was unable to reproduce the problem. The dealer inspected the vehicle twice. They turned the rotors (unrelated to the issue) the first time I took it in. The second time I took it in, I made them apply the T-SB 0047-24 software update. The T-SB 0047-24 update says that some drivers might be "sensitive to the momentary transition from regenerative braking to hydraulic braking under certain driving conditions." The update to the software was designed to "improve the feeling" for the condition. The brakes are not slowing the vehicle predictably. There are no warning lights or errors given by the vehicle.

During braking the vehicle will lose braking force and “lurch” forward before regaining braking power. It usually happens at about 15-20mph decelerating. There are no warning lights associated with this. The dealer recommended we brake harder to prevent the issue. It still happens and the extra braking force leads to unnecessary wear on braking and suspension components. This caused us to have a near-mis accident while braking in traffic. It also causes quite a distraction during deceleration because it’s unpredictable and uncomfortable when it happens.

When coming to a stop at various speeds the car will sometimes surge during the braking process. It feels like either a brief acceleration or a release of the brakes. It then continues to brake as normal. It is an intermittent issue and can occur when coming to a slow stop or at faster stops. It started in November of 2023, and started happening only once a week or so. As time went on, it became more frequent until it was happening several times a day. By the summer of 2024, the Toyota dealership was finally able to replicate it, and they fixed it with a “computer update” as best I understood. The problem was fixed for a while but began again a few months later. The frequency at this time , early 2025, is every 1-2 days. I have returned multiple times to Toyota, and they have no fix since they have not been able to replicate it this time. I have pointed out to them that they did replicate it when they had previously fixed it. This issue presents a danger when the driver is coming to a stop. The first time it happened my reaction was to move my foot to the accelerator and I jumped a small curb. Although I am prepared now for this to happen, it is possible my instinctive reaction could happen again, resulting in a collision or injury. There are multiple forums and I see multiple complaints on this website, but I see no investigation cases. Please help me understand why this safety issue has not been investigated.

Brakes intermittently slip while providing constant pressure at lower speeds. The car will lurch forward while brake pedal is depressed and vehicle is slowing down then will go back to stopping.

When braking while turning on a freeway exit ramp, the car sometimes briefly "surges." It feels like the brake briefly stops working before being applied more firmly than before. This happens at least a couple of times per week.

On a regular basis when applying the brakes the brake pressure will release causing the vehicle to lunge forward or momentarily stop decelerating. This release of the brake pressure is only for a second but during that time the van will stop or slow decelerating and if you are slow when this happens you will feel the van lunge forward. It has even happened at a stop with the brake applied and the van would move slightly forward as the pressure released and then reapplied. It almost feels like a computer signal is being reset when this happens causing the momentary release of pressure.

While braking at around 15 mph there is a sudden loss of braking force that causes the car to surge forward. This happens as the car switches from regenerative braking to pad braking. It has almost caused an accident a few times for me.

I have a 2022 Toyota Sienna and have noticed that when I am braking (especially at low speeds while stopping at a STOP sign or a Red Light),the car "lurches" forward as if the car is accelerating a little bit. I have to slam the brakes to stop the vehicle. It feels really dangerous - it might hit a car in front or a kid in a neighborhood! I will reading through Toyota Sienna forums and found scores of similar incidents reported! Hope Toyota takes notice and fixes this.

This Hybrid LE model brake system is very poor. If we press the break pedal it stops 5-10 meter far. Urgently need for recall and rectify this major issue to avoid more accidents and property damage to others on the road .

Experienced it a number of times intermittently. When making a stop from about 25-30 mph, just before making a full stop (~10mph) while foot on the break, the vehicle lunge for a split second. The feeling of loss of braking power. At number of times, I thought I was going to rear end the veh in front of me. The last time I experienced it was last Aug 7.

Brakes release sporadically and then re-engage causing a brief lurch when stopping. This has created near collision or entrance further toward an intersection than ideal

I bought this van new in March 2022. Since I have owned it I have had countless instances where I will have my brakes applied and the van will suddenly accelerate with the brake still applied. This has happened multiple times when I am braking on hills & I have nearly ran stop signs because of it, there are some dangerous intersections I travel frequently and this is a major safety concern. This needs to be addressed by Toyota or someone is going to end up killed or seriously injured in an accident from this malfunction. I am truly concerned for mine and my children’s safety when I am traveling in my van. I can’t trade it in because I still owe more than trade in value and can’t afford to be upside down. NHTSA please help me.

The brakes in my 2022 Sienna Hybrid XLE randomly slip when stopping. It happens rarely, but is completely unexpected when it does and I can't reproduce it on demand. It feels like I've hit a small patch of black ice or released my foot from the brake for a split second (when I didn't!). My husband rarely drives the van, and it happened to him yesterday. Last week it 'released' for the longest it's ever done, maybe a full second or more. It is summer here and I was driving on normal pavement, so there is no reason that I shouldn't have been in full control of the stop! Thankfully there wasn't anything in front of me, but if it were a different situation it could have been VERY BAD.

brakes release upon slowing to a stop, causing vehicle to surge forward. Software update will fix it, but dealership/toyota will not cover the cost to do so.

When coming to a slowdown at the light, lightly braking to a slow, the brakes would suddenly disengage and the car lunges forward, I have to release an reapply the pedal in order for braking to stop. This has happened multiple times, but the most recent, I almost ran into the person in front of me because the brakes disengaged. It doesn’t happen all the time, but every once in a while with unknown parameters, it happens and is very scary. I drive with a lot of fear now, especially with my kids in the car.

When pressing the brakes car will lunge forward. Used to happen very rarely and now it is happening sometimes multiple times a trip. Pulling in a parking space or stopping at a light and almost hitting the car in front of me because the car just lunges forward. No warning lights or messages it just randomly happens.

Sometimes when I apply the brakes, usually for more than a few seconds, the brakes feel like they release on their own. The car will lurch forward and I have to firmly push the brake pedal harder, in order to regain braking power. This happens randomly but on multiple occasions on a weekly basis.

I have noticed that when I am breaking, occasionally as I’m breaking there’s a sudden jolt, or lurch, forward like the car is accelerating. This is very disconcerting especially when there are other cars in front of me or people.

Frequently during breaking while going downhill or hitting a bump while breaking, the breaking will “slip” or stop breaking and then jump back into breaking. Once it recovers and the breaks catch again, it will jolt the vehicle forward.

It happened multiple times, when braking the van for a second or so lurches/moves forward than stopping. The van will not stop right away as expected, instead will move forward. As per dealer everything is good and no problem identified. These are sporadic events.

Occasionally, if I drive over uneven surface or make a turn while breaking, then the brake lets up for a second and the car lurches forward. This has happened probably probably 5-6 times a month for the past 7 months we've owned the car. We live near some hills, so it most often occurs when going downhill and I'm breaking at/below residential speeds. After the second of letting up, the break resumes as normal. My husband has also had this issue happen to him, although only once because he drives it less often. -The car is available for inspection on request. -So far, there haven't been any related accidents because I've never been in an emergency breaking situation. -The problem has not been confirmed by an independent service center. Before we purchased the car, we had a Toyota Dealer mechanic (who was not connected to the dealership selling the car) do a routine inspection and said the breaks were in good shape. Because the break issue only happens in certain conditions, we did not notice the break issue until after the car was purchased. -The car hasn't been inspected by the manufacturer, police, insurance, etc. -There have been no warnings or other symptoms.

I bought this vehicle new and it has an issue with braking. Once in a while when you hit your brake the car wants to keep going. Kind of like accelerating on its own. I let Toyota know about this a couple of times when I went in for scheduling maintenance. They say that they can’t find anything wrong. It’s has happened at least twenty times to me and more lately. Yesterday 5/29 it happened twice, and is very scary. If you go online you will see other people complain about the same problem. Sooner or later something bad is going to happen. I bought the van for my wife, and she is to afraid to drive it any longer

In 2023, I purchased a used 2022 Toyota Sienna with 39k miles on it. I have noticed that when I am coming to a slow stop, the car will not stop right away as expected. Instead, it moves forward. It also happens with slow right or left turns. These incidents are sporadic, occurring at least once every time I drive. On this Memorial Day, I encountered a very dangerous situation while driving on the highway. I needed to brake for an emergency, but the vehicle refused to brake, nearly causing me to lose control. Following this incident, I conducted research and discovered that a Technical Service Bulletin (TSB-0047-24) exists. I took the car to the Toyota dealership, applied the TSB, and covered the full cost. I am uncertain whether the problem will receive a fix. Based on my knowledge, I believe this is a safety concern, and Toyota should investigate further.

2022 Toyota Sienna - sudden acceleration or lunging when braking on right turns.

When I step on the brakes it slows initially and then it feels like the brake just lets go of its grip and the car keeps going or even accelerates and you have to slam on the brake to get it to stop. The last time this happened, it resulted in a crash with my daughter in the car. Toyota is telling me the brakes are fine but I do not feel safe driving it. There have been no lights or warning lamps and Toyota says they inspected the issue and found nothing but it has happened multiple times.

When braking the vehicle will initially slow then it feels as if the brake releases or actually accelerate before the brake engages again. This has been happening pretty much since we purchased the vehicle. It seem to be happening with more frequency.

The problem in my vehicle is that several times when braking the car accelerates suddenly before braking, it doesn't always happen but I saw on the news that hyundai has the same problem in their cars with the software and I don't know if this causes the same in my car

When applying the brakes the vehicle doesn’t seem to want to stop and almost feels as if it’s trying to accelerate before finally catching and stopping. Typically it’s a pretty fast occurrence but now it’s taking longer to stop. It is available for inspection. It caused me to run a stop sign today and go into a persons yard before the van finally came to a stop. No service dept has looked at it yet. The problem doesn’t seem to be able to be reproduced on command and only happens at random. The vehicle has had no inspection and has no warning lights on during the time I’ve had the vehicle.

The brakes randomly give out for a second even while applying constant pressure on the brake pedal. It feels like the car lurches forward when the brake loss occurs. Even though it only lasts a second, it is terrifying and there have been a couple incidents when I was coming to a stop at a red light and I almost hit the car in front of me. This has also occurred in my 2021 Highlander Hybrid. It luckily has never happened during high speeds, but it’s scary enough going 30 MPH.

Sometimes vehicle jumps forward if breaking on uneven surfaces like manholes or crack road. Or if emergency brake that’s hard enough the car also jerk forward a little. Toyota said that’s normal because the braking system switches from electric brake to hydraulic brake. I don’t feel that it is normal.

My vehicle occasionally exhibits a behavior during low speed braking (such as approaching a stop sign or red light) where the deceleration will briefly cease in spite of constant brake pedal pressure. This lasts for less than a second before brake behavior returns to normal. To the driver, it feels like a sudden acceleration (but I believe it is a momentary loss of deceleration). -- This behavior is intermittent and difficult to reproduce on demand. It seems to happen more frequently: - At low speeds, when gradually slowing to a stop. - Un uneven pavement (such as a street with speed bumps or potholes). - On downward slopes. -- I strongly believe the problem is related to transitions between regenerative, engine and friction brakes in this vehicle. I believe Toyota has a systemic issue related to the design and/or implementation of the hybrid braking system on this and similar models. -- This is not a case of "you just need to get used to how hybrids work", it is a case of "I press the brake, I expect the vehicle to decelerate". If you review Toyota online forums for the current Sienna, Highlander and similar Toyota hybrids, this issue is extremely common and many owners are complaining, so far Toyota is ignoring the issue.

Our 2022 Hybrid Toyota Sienna will randomly have a loss of brakes for several seconds while in the middle of a stopping situation. The vehicle seems to lurch forward with the brake pedal going soft. After cramming my foot as hard as possible into the brake pedal I have been able to get it to stop so far, however my stop distance is much longer than anticipated. It seems to be getting worse in the past week with 2 of these episodes occurring. In the past year it has happened approximately 5 times. Each time is highly distressing. We have taken it to one Toyota dealership so far that could not find anything wrong with the brakes and have another appt in July with a second Toyota dealership. I find similar experiences described online from other 2022 Hybrid Toyota Sienna owners. I feel an obligation to report this because it is life threatening to be without brakes for even a few seconds while driving. There are no warning messages that appear when this brake failure occurs and it has not been reproducible.

Brakes release briefly when slowing to a stop. While slowing to a stop with steady pressure on the brake pedal, the braking action will momentarily give out, resulting in the vehicle lurching forward beyond the anticipated stopping/slowing distance before the braking action re-engages. This has resulted in near collisions with cars, bikes, and pedestrians as the vehicle suddenly stops slowing without warning and unexpectedly increases stopping distance. The problem is intermittent and difficult to reproduce, but has occurred repeatedly over at least 6 months of ownership. Going over any kind of bump, crack, pothole, etc seems to increase the likelihood of occurrence, but it also happens on dry, flat pavement. No warning lamps, error messages, or other related symptoms from the vehicle either before or after occurrences of the problem.

Over the past 18 months, this vehicle has exhibited the following actions approximately 30-40 times. When slowing the vehicle, with brake pressure applied, the vehicle reacts appropriately until, at the slow speed( approximately 5-10 mph) it suddenly accelerates or surges ahead for approximately 1-2 seconds. The has occurred while in the process of turning as well as moving straight ahead. I have taken the vehicle to the dealer of the original sale, Shepard's Toyota, Thomaston Maine, and they have attempted to replicate this action. They were unable to do so. The reported to me that they contacted Toyota engineering and was told, I paraphrase, that when the drive battery is fully charged and the dynamic braking system is still creating a charge, the current is directed to the drive motors, despite the fact that the brake is applied to slow and stop the vehicle. These events have occurred inn the middle of turns, when attempting to stop at crosswalks, and stopping prior to entering a traffic stream. If I had not continued to apply the brake, the vehicle would have, in several case, collided with objects.

When pressing the brake to come to a stop, the van will surge almost as if the brakes stop working. It happens just for a second but makes it feel like you won't stop in time. It definitely slows the braking down and may cause a crash. It has happened randomly and is unpredictable and cannot be replicated in a way that I know how to replicate. This has happened since new but has gotten worse recently. Van currently has 24,000 miles.

About five times now, when braking at slower speeds, such as at a light or parking, the car will accelerate and lunge forward or there will be a loss of the brake. My foot is depressing the brakes normally when this happens, but then I will slam harder on the brake to not hit whatever is in front of me. There does not seem to be any particular reason that causes this to happen, for instance temperature, and it happens randomly.

When breaking at a stop sign or light, the vehicle occasionally feels like it surges forward and I'm accelerating instead of breaking. This causes me to push harder on the brakes, which then seem to mechanically engage and then stop the van. I've had the van for a year now and it happens a few times a month, especially if I breaking on an uphill incline.

I have had this issue ever since i got the hybrid sienna minivan. When at speed 45-65mph and slowing down (for example approaching an intersection), when the driver presses the brake the vehicle initially slows down using the hybrid regen system and at some point switches to using the mechanical brake. I hold down the brake at the same firm pressure but when the vehicle switches from regen to mechanical brake, the vehicle jerks forward as it starts accelerating briefly before the mechanical brake engages. this causes a panic in the driver because vehicle is not behaving how the driver wants. in my experience i have had to slam the brakes even harder. There is a bulletin by Toyota to fix this but my dealer said that did not apply to my vehicle. I have had issues hydroplaning / skidding when making a turn on wet pavement which i think might be due to the acceleration / jerk forward while braking during a turn. this happened to me again on 9/11, i crashed into a concrete base of a light post in a parking light at 5-10mph. the forward collision warning did not trigger and airbags deployed.

It happens more often when the interior of the car is super Hot and AC is in Max output and city driving speed around 35mph. When slightly braking for a longer time in Regenerative brakes mode, the brakes will let up. Not completely but it's as if my foot let up on the brake pedal when it didn't. It caused the vehicle to suddenly speeding up, even though my foot hadn't changed pressure on the brakes. increase the risk of not being able to stop the vehicle at low speed and cause rear-end accidents. I am thinking that it may be caused by a software problem when the battery can't take all the charge of Regenerative braking while the AC is in Max output and the computer lowers the power of Regenerative braking which causes the "speeding up" effect. It has been happened more than 10 times in summer time.  it will not happen when the car is cooler and AC is not in Max output.   100% sure that is related to the "Regenerative braking " . no problem for the hydraulic brake.

While applying brakes vehicle lurches forward. While coming to a stop at a red light with a car in front of me I was slowing down applying brakes and all of a sudden it was just like they released for a second and had to stand on them. Does not happen all the time but I see many complaints about it. This has happened so far 8 or 9 times maybe more. May have to do what you eat generative breaking going to normal breaking power. Have reported it Toyota and they said it's normal it's not normal it's a safety issue

Today in the morning while driving on normal road, suddenly Rear Cross Traffic alert and Blind spot Monitor became unavailable according to a message on the dash. This message persisted after restarting. In the afternoon another message gave these two company. The vehicle informed me, that the parking support brake is now unavailable as well. Funny is, that these messages are not documented in the alert history of the vehicle, although they still persist. Mileage of first occurrence was 9800. Another user in a sienna forum reported a similar problem and said this might be related to the poor design of the rear bumper that allows ingress and accumulation of dust, dirt and mud around the rear radar sensor. The vehicle was driven the week before the incident and about 700 mi before the incident on a dirt road (County road) in Michigan. This was pretty dusty and a bit muddy, but nothing a normal non-off-road vehicle couldn't stand.

I my Sienna had its 12 volt battery depleted over night with no reason. After it was jump started, literally every single piece of equipment was malfunctioning and producing an alert (hybrid system, brake pressure, RCTA, BSM, AWD,tire pressure and so on). After several restarts of the engine (about 15 min after running engine), all systems went to normal except hybrid drive system, that still asked for maintenance and the tire pressure sensor was still on alert. However I drove the vehicle to a dealership in Maine after the parking brake finally decided to get loose again. These guys told me, they had just the same problem with another 2022 sienna a week before. However, they reseted the errors, and everything worked fine. They had no explanation why two sienna in one week come to their lot with a depleted battery and as a consequence with a malfunctioning hybrid systen. That's very unsatisfying.

The van, sporadically, for the entire time we've owned it, lunges forward while depressing the brake pedal while turning into a corner or parking lot, etc. I reported this to the Toyota dealer service department when I brought my van in for the recall. The lunging continues so I brought to the dealer service department again, today. The service representative asked me if I ever drove a Hybrid before, informed me that this lunging is designed into Hybrid vehicles because this is when the battery is getting charged. The service representative told me that he drives a hybrid and that this happens to him. I asked for clarity stating, "So it's "designed for a vehicle to lunge forward? This seems like a safety issue. I've gone on forums to see if others have been experiencing this and saw that this is happening in the 2022 and 2021 Siennas". They service representative advised me to not go on forums because they are filled with unhappy people. He said he moderates a forum and knows this. I responded, "I know what I'm feeling when I depress the brake, the van is lunging forward."

When I’m braking, some times, the car seems to lunge forward for just a moment. It’s very unnerving. It’s almost like it’s slowing, but then surges forward for just a moment. We’re at 2k miles and have had it happen ~5 times now. Once it happened and shot me forward into traffic, thankfully there wasn’t a car right there or I would have been hit! Very scary, I feel like I’m not in control of the car at all. It definitely needs to be looked into more.

The contact owns a 2022 Toyota Sienna. The contact stated while driving approximately 40 MPH and slowing to stop at a traffic sign, the brake pedal was depressed and there was no resistance from the brake pedal. The contact depressed the brake pedal with force to bring the vehicle to a stop. The contact stated no warning light was illuminated. The contact had driven the vehicle to a local dealer, where it was diagnosed and found that the brakes were operating correctly. The vehicle was not repaired. The contact stated that the failure recurred intermittently. The manufacturer had not been informed of the failure. The failure mileage was approximately 10,000.

Mileage: 10,000

I got the software recall fix last week. Today is the first time I have had any issues. 2 time today the emergency braking activated. First time I was leaving McDonald’s parking lot. I waited for a car to pass then I took off to get on the road. The emergency braking system activated leaving me halfway in the parking lot and part way in the road. I thought that was weird. The a few minutes later I arrived at home and started backing into the driveway like I always do. As I was backing into the driveway a car started to pass on the road in front of me. The car emergency braking system activated leaving me part way in the road and driveway was the car passed. I have saved the ring camera footage of me arriving home in case it is needed.