2022 TOYOTA SIENNA

SERVICE BRAKES

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.

FORWARD COLLISION AVOIDANCE: WARNINGS

Pre-Collision System Malfunction, Hybrid System Malfunction, AWD System Malfunction suddenly when restarting the vehicle. Towed to Toyota of Downtown LA dealership. Toyota of Downtown LA Service tells me that the CPU on my relative new Sienna 2022 was fried from jump start when Sienna starting-battery was low. It was done by a AAA professional, I doubt that is the reason for the fried CPU. I believe Toyota engineers would not design/allow the CPU vulnerable to being fried from a jump start. This is a horrific design flaw if it is this way. This happens now, just 6 months after the 3 year warranty coverage. Toyota of Downtown LA Service is telling me it is going to cost me $2900 to replace this CPU. I find this unacceptable.

FORWARD COLLISION AVOIDANCE: AUTOMATIC EMERGENCY BRAKING

Pre-Collision System Malfunction, Hybrid System Malfunction, AWD System Malfunction suddenly when restarting the vehicle. Towed to Toyota of Downtown LA dealership. Toyota of Downtown LA Service tells me that the CPU on my relative new Sienna 2022 was fried from jump start when Sienna starting-battery was low. It was done by a AAA professional, I doubt that is the reason for the fried CPU. I believe Toyota engineers would not design/allow the CPU vulnerable to being fried from a jump start. This is a horrific design flaw if it is this way. This happens now, just 6 months after the 3 year warranty coverage. Toyota of Downtown LA Service is telling me it is going to cost me $2900 to replace this CPU. I find this unacceptable.

ELECTRICAL SYSTEM

Pre-Collision System Malfunction, Hybrid System Malfunction, AWD System Malfunction suddenly when restarting the vehicle. Towed to Toyota of Downtown LA dealership. Toyota of Downtown LA Service tells me that the CPU on my relative new Sienna 2022 was fried from jump start when Sienna starting-battery was low. It was done by a AAA professional, I doubt that is the reason for the fried CPU. I believe Toyota engineers would not design/allow the CPU vulnerable to being fried from a jump start. This is a horrific design flaw if it is this way. This happens now, just 6 months after the 3 year warranty coverage. Toyota of Downtown LA Service is telling me it is going to cost me $2900 to replace this CPU. I find this unacceptable.

UNKNOWN OR OTHER

The Entune 3.0 System governs navigation, calls etc. The system on my car has been replaced 4 times and still does not work. This is a life safety issue as the system grabs phone calls while driving without being able to answer. It also makes it frequently impossible to use hands free on the phone as it grabs calls. In order to avoid it grabbing calls I have to disable bluetooth on my phone which then causes my phone to not work in handsfree mode (ok google etc.) Furthermore the backup camera does not always work. Finally, a Toyota Service Manager told me in his oppinion 25% of the entune units are "bricked," non functional and need to be replaced. Toyota has fired according to him Panasonic as the supplier and now has a new provider.

POWER TRAIN

The Entune 3.0 System governs navigation, calls etc. The system on my car has been replaced 4 times and still does not work. This is a life safety issue as the system grabs phone calls while driving without being able to answer. It also makes it frequently impossible to use hands free on the phone as it grabs calls. In order to avoid it grabbing calls I have to disable bluetooth on my phone which then causes my phone to not work in handsfree mode (ok google etc.) Furthermore the backup camera does not always work. Finally, a Toyota Service Manager told me in his oppinion 25% of the entune units are "bricked," non functional and need to be replaced. Toyota has fired according to him Panasonic as the supplier and now has a new provider.

SERVICE BRAKES

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.

VEHICLE SPEED CONTROL

When break to slow down the car it accelerate instead.

ELECTRICAL SYSTEM

When break to slow down the car it accelerate instead.

SERVICE BRAKES

When break to slow down the car it accelerate instead.

VISIBILITY/WIPER

05/13/23 - Hybrid malfunction, battery consistently dies/won't take a charge. 06/01 - 28/25 - Hybrid malfunction, Advanced Detection System Malfunction and Sonar Malfunction, ABS malfunction, Seatbelt malfunction, battery not charging. 06/09/23 - Van will not start; towed to Steet Toyota. Street confirmed numerous codes, AC issues. 06/27 - 07/06/23 - Van had to be taken to United Access, Albuquerque. 09/01/23 - 12/14/23 - Windshield wipers go off & run dry, cannot stop it & randomly happens. 10/11/23 - Hybrid malfunction, battery continues to die/won't take a charge. 10/23/23 - Hybrid malfunction, Advanced Detection System Malfunction and Sonar Malfunction, ABS malfunction, Seatbelt malfunction, battery not charging. Towed to United Access at personal expense. 11/12/23 - Picked up van from United Access repairs (dropped off 10/23/23). 12/08/24 - Hybrid malfunction, Advanced Detection System Malfunction and Sonar Malfunction, ABS malfunction, Seatbelt malfunction, battery not charging. Towed at personal expense. 12/08/24 - 01/15/25 - Hybrid malfunction, Advanced Detection System Malfunction and Sonar Malfunction, ABS malfunction, Seatbelt malfunction, battery dies/won't accept a charge. Hybrid malfunction, Advanced Detection System Malfunction and Sonar Malfunction, ABS malfunction, Seatbelt malfunction, battery dies/won't accept a charge; confirmed numerous codes. 05/24/24 - Hybrid malfunction, Advanced Detection System Malfunction and Sonar Malfunction, ABS malfunction, Seatbelt malfunction, battery issues. Windshield wipers still malfunctioning with no apparent cause. 07/25/24 - Hybrid malfunctions, confirms malfunctions & charging issues. 07/29 - 08/10/24 - Hybrid malfunction, Advanced Detection System Malfunction and Sonar Malfunction, ABS malfunction, Seatbelt malfunction, battery issues. Windshield wipers still malfunctioning with no apparent cause. 08/19/24 - Hybrid, Advanced Detection System, Sonar, ABS, seatbelt & battery dying. More issues.

ENGINE

05/13/23 - Hybrid malfunction, battery consistently dies/won't take a charge. 06/01 - 28/25 - Hybrid malfunction, Advanced Detection System Malfunction and Sonar Malfunction, ABS malfunction, Seatbelt malfunction, battery not charging. 06/09/23 - Van will not start; towed to Steet Toyota. Street confirmed numerous codes, AC issues. 06/27 - 07/06/23 - Van had to be taken to United Access, Albuquerque. 09/01/23 - 12/14/23 - Windshield wipers go off & run dry, cannot stop it & randomly happens. 10/11/23 - Hybrid malfunction, battery continues to die/won't take a charge. 10/23/23 - Hybrid malfunction, Advanced Detection System Malfunction and Sonar Malfunction, ABS malfunction, Seatbelt malfunction, battery not charging. Towed to United Access at personal expense. 11/12/23 - Picked up van from United Access repairs (dropped off 10/23/23). 12/08/24 - Hybrid malfunction, Advanced Detection System Malfunction and Sonar Malfunction, ABS malfunction, Seatbelt malfunction, battery not charging. Towed at personal expense. 12/08/24 - 01/15/25 - Hybrid malfunction, Advanced Detection System Malfunction and Sonar Malfunction, ABS malfunction, Seatbelt malfunction, battery dies/won't accept a charge. Hybrid malfunction, Advanced Detection System Malfunction and Sonar Malfunction, ABS malfunction, Seatbelt malfunction, battery dies/won't accept a charge; confirmed numerous codes. 05/24/24 - Hybrid malfunction, Advanced Detection System Malfunction and Sonar Malfunction, ABS malfunction, Seatbelt malfunction, battery issues. Windshield wipers still malfunctioning with no apparent cause. 07/25/24 - Hybrid malfunctions, confirms malfunctions & charging issues. 07/29 - 08/10/24 - Hybrid malfunction, Advanced Detection System Malfunction and Sonar Malfunction, ABS malfunction, Seatbelt malfunction, battery issues. Windshield wipers still malfunctioning with no apparent cause. 08/19/24 - Hybrid, Advanced Detection System, Sonar, ABS, seatbelt & battery dying. More issues.

ELECTRICAL SYSTEM

05/13/23 - Hybrid malfunction, battery consistently dies/won't take a charge. 06/01 - 28/25 - Hybrid malfunction, Advanced Detection System Malfunction and Sonar Malfunction, ABS malfunction, Seatbelt malfunction, battery not charging. 06/09/23 - Van will not start; towed to Steet Toyota. Street confirmed numerous codes, AC issues. 06/27 - 07/06/23 - Van had to be taken to United Access, Albuquerque. 09/01/23 - 12/14/23 - Windshield wipers go off & run dry, cannot stop it & randomly happens. 10/11/23 - Hybrid malfunction, battery continues to die/won't take a charge. 10/23/23 - Hybrid malfunction, Advanced Detection System Malfunction and Sonar Malfunction, ABS malfunction, Seatbelt malfunction, battery not charging. Towed to United Access at personal expense. 11/12/23 - Picked up van from United Access repairs (dropped off 10/23/23). 12/08/24 - Hybrid malfunction, Advanced Detection System Malfunction and Sonar Malfunction, ABS malfunction, Seatbelt malfunction, battery not charging. Towed at personal expense. 12/08/24 - 01/15/25 - Hybrid malfunction, Advanced Detection System Malfunction and Sonar Malfunction, ABS malfunction, Seatbelt malfunction, battery dies/won't accept a charge. Hybrid malfunction, Advanced Detection System Malfunction and Sonar Malfunction, ABS malfunction, Seatbelt malfunction, battery dies/won't accept a charge; confirmed numerous codes. 05/24/24 - Hybrid malfunction, Advanced Detection System Malfunction and Sonar Malfunction, ABS malfunction, Seatbelt malfunction, battery issues. Windshield wipers still malfunctioning with no apparent cause. 07/25/24 - Hybrid malfunctions, confirms malfunctions & charging issues. 07/29 - 08/10/24 - Hybrid malfunction, Advanced Detection System Malfunction and Sonar Malfunction, ABS malfunction, Seatbelt malfunction, battery issues. Windshield wipers still malfunctioning with no apparent cause. 08/19/24 - Hybrid, Advanced Detection System, Sonar, ABS, seatbelt & battery dying. More issues.

POWER TRAIN

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)

SERVICE BRAKES

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)

SERVICE BRAKES

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.

SERVICE BRAKES

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.

SERVICE BRAKES

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

SERVICE BRAKES

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.

SERVICE BRAKES

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.

SERVICE BRAKES

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.

SERVICE BRAKES

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.

SERVICE BRAKES

Vehicle suddenly accelerates when depressing the brakes (lurches).

SEATS

seat retractor failure- white plastic part off and visible , seat is making popping noise when seat is being adjusted. Noticed this when i picked up from dealer after oil change. I feel this is a driving safety concern. Larry H Miller American Toyota (Albuquerque, NM) service manager states it's safe to drive, however I feel this is a huge safety concern. The seat was in working order did not have this issue during drop off of service. However I believe this is a failure on Toyota engineering. I would like some guidance on how to get this repaired as they want me to pay $2,000.

VEHICLE SPEED CONTROL

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.

SERVICE BRAKES

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.

AIR BAGS

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.

SERVICE BRAKES

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.

SERVICE BRAKES

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.

SERVICE BRAKES

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.

ELECTRICAL SYSTEM

The complaint was the failure mode of a no start condition while traveling. The issue was related to partial or improper function of the DSM which caused a drain on the battery and battery cell damage requiring full replacement. The fix was a software update to prevent recurrence which cost several hundred dollars (according to the Toyota Service Bulletin or TSB-0089) along with approx $200 for diagnostic analysis. The TSB work would have been covered if we had not exceeded 36,000 miles. We had the vehicle for 3 years and 1 month. I do not understand the mileage impact to the coverage of a firmware update as this was related to a no start condition and could have occurred when we stopped at a rest stop area as we were traveling across country at the time. I am very disappointed with the failure and the impact of getting several jump starts for our vehicle as well as the couple days waiting to get scheduled into a dealership and 4 hours to get fixed.

SEATS

The driver side control panel trim keeps snapping off. I’ve researched it and it’s happened to others. It’s been repaired 3 times!

SEATS

Back seats do not lock down when folded. This almost caused my pet to get hurt when going over a speed bump sent them flying up. Seats should lock down when folded to prevent injury to pets. Also almost hurt by daughter in backseat when the single seat came up flying up and re-latched into up position from folded position hitting her arm in the process.

FORWARD COLLISION AVOIDANCE: WARNINGS

What component or system failed or malfunctioned, and is it available for inspection upon request? Toyota Integrated Dashcam, and yes its available to review. How was your safety or the safety of others put at risk? None Stop beeping Has the problem been reproduced or confirmed by a dealer or independent service center? Yes, was replaced once under of warranty and failed again. 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, failed again after 30,000 miles