I am having a massive problem with my vsc. Randomly, regardless of speeds (it's happened going 70 as well as 25, and 40 mph), my vsc will kick on, kill my speed, and cause me to swerve. As you can imagine, going 70 on an interstate with other vehicles around and having this happen is life threatening not only to me and my family but other vehicles around me. Reading on several auto forums, this problem has been drawn to the attention of Toyota corporate to no avail. It is absolutely beyond me that they see no reason to file a recall.

- Cumberland, MD, USA

When I drive my van the vsc and trac off lights come on intermittently and cause the vehicle to bog down and pull towards oncoming traffic. I took my van to the dealership and they suggested replacing the steering sensor. We replaced the sensor and the problem persists. With no codes coming up they say they can't fix my van. It happens while driving around corners at 35 mph mostly but has also happened a few times on the freeway at 70. All times it has happened so far has been on dry pavement. Toyota doesn't seem to think that there is really a problem since no codes are coming up on their code reader. Due to the frequency of the issue I am having it could be disastrous and end up in a head-on collision. How come this vehicle hasn't been recalled. I have included a photo of my service report from the dealership. Also there are multiple complaints in different forums regarding this same issue and as far as I have read there is really no resolving it.

- Yoncalla, OR, USA

While driving the vsc comes on randomly. Causing the vehicle to try to pull into oncoming traffic. It happens quite a bit and is potentially deadly.

- Yoncalla, OR, USA

While driving at 55 mph or faster, generally on a right hand bend, the vsc will activate pulsing the brake and violently pulling the car to the left and towards oncoming traffic. The skid light goes on, and the car beeps until you are out of the turn and then it goes away. This problem has been intermittent for about 6 months but has gotten much worse and more frequent in the previous 2 months. It has been to the dealership several times and they do not know what to do. There are no error codes. The best they can say is "you're going to fast..." which is a wholly unacceptable answer considering we are going the speed of traffic and no more than 0-10 over the speed limit.

- San Luis Obispo, CA, USA

The vsc traction control system activates on it's own. Driving the van it automatically comes on and brakes the van, dashboard light and beeping noise comes on. Brakes you automatically causing the van to veer to the right. This malfunctioning devise with the yaw system is continuing after many trips to the local Toyota dealer. They currently have the van and are replacing part after part and the problem still persists. Contacted Toyota headquarters and filed a complaint with them but they say there is no recall on this van. Checked on line and found many other Toyota Sienna owners who are experiencing the same issues as we are. This is a dangerous safety hazard which can cause an accident. As of today's writing the problem has not been diagnosed by Toyota.

- Redding, CA, USA

The vsc sensor is activating during normal driving conditions without warning. This is causing the van to aggressively apply the brakes and lose acceleration. This issue mainly occurs when turning down while going down hill, however it happens randomly in other instances as well. I have been in several life threatening instances where the brakes are being applied while traveling through mountains with large semi trucks behind me.. nearly causing several accidents. My research points to a few things that could possibly be the culprit: The yaw sensor stearing wheel rotational position sensor vsc computer module this video captures exactly what is happening to my vehicle. Https://www.youtube.com/watch?V=tgmjafpifko I cannot find any instances where this issue was fixed online

- Rock Hill, SC, USA

Unexpected vehicle stability control activation while driving resulting in automatic braking and unexpected steering pull. I have been experiencing this issue over the past 4-5 years. There have been times where this issue has led to almost striking vehicles around me. I have brought the vehicle to a Toyota dealership, but they have not been able to fix the issue. On several online bulletin boards, other owners of Toyota Sienna have complained regarding the same issue. I just read in the news that similar issues are occurring on 2001-2002 Toyota sequoia.

- Dublin, CA, USA

On numerous occasions, we have had the vsc indicator light turn on while driving on dry pavement while on the highway, which caused the car to apply the brakes and also swerve. Our car is AWD so the first time it happened, we thought there must have been black ice on the road (even though the road appeared dry). It first happened about three years ago, although it is happening more frequently now. We drove home yesterday through the mountains and it happened four times on our two hour drive. It mostly happens while going downhill for us, and has happened at speeds of 70 mph - 30 mph. It has happened while turning (both directions) and going straight. It is very scary for both my wife and I, and I feel unsafe with her driving our car with our four children. We've taken it to the dealership and they want to charge us lots of money to try to fix what they "think" the problem is. I have spoken with other Sienna owners who have experienced the same frightening experience so know it is not just our car, driving, etc.

- Centennial, CO, USA

It started a year or so ago the while driving on dry road above 50miles the vsc light would lit with a alarm sound, the van will automatically apply brakes and slow the Sienna. Since this was extra van and we were driving mostly sedans we had and due to business I could not spend any time on it.. now it happens more frequently and it risk our lifes on highway. Upon searching internet various forums came with with problems pertaining only to this year and model, please search (sudden vsc activation) and you will find multiple owner only of 2004 complaining for same issue.. in fact there are to two tsb articles to point to this problem ( tsb-BR001-04 and tsb-BR004-03). I would kindly request to investigate the sudden vsc activation in middle of highway. I have spent money to replace tires, aligment balancing to find the issue is widespread.

- Suwanee, GA, USA

The contact owns a 2004 Toyota Sienna. While driving at 70 mph around a curve, the brakes engaged independently. In addition, the contact heard a beeping noise coming from the vehicle. The vehicle was taken to a dealer, who diagnosed that a sensor needed to be replaced. The vehicle was repaired. However, the failure recurred on numerous occasions. The manufacturer was not notified of the failure. The failure mileage was unknown.

- Lincoln , NE, USA

The steering angle sensor, pn# 89245-08011 failed. The van can not be driven over 23 mph. The brakes come on automatically over 23 mph and the engine will not respond to accelerate. The steering seems strange (anti-lock brake light coming on) but I was able to keep the van in my lane of traffic. I am concerned that this sensor or others will fail and the van will automatically apply the breaks and loose power preventing me from maneuvering the van to the side of the road. I do not know what would have happened if I was travelling at highway speed. I consider this a major safety problem.

- Dayton, OH, USA

While driving 55 mph on a straight stretch of road, the car careened to the right and the automatic braking system suddenly became engaged and our car was forced to stop on the side of the road. After turning off the car and restarting, the problem appeared to be a singular incident. However, about one year later, on March 27th, 2015 a similar occurrence happened but at only 25 mph. The car, however, was not drivable. After driving about 25 feet, the traction light came on, the signal sounded and the car brakes began to pump as though the car was skidding. As the car slowed almost to a stop, stepping on the brake manually stopped the signal and the light, as well as, the ABS system temporarily allowing the car had driven a short distance. After another 25 feet, the traction light went on again, the warning bell went off and the ABS system was activated again. This continued for a significant distance before I determined that the car could not be driven without a significant accident occurring. Unfortunately in the first incident, we were almost struck from behind by a closely following vehicle. In the second case, the same nearly occurred as I tried to exit onto a roadway.

- North Canton, OH, USA

At varying rates of speed, on dry roads, my van's vsc and traction control icons will illuminate on the dash, the acceleration will cease and the brakes will pump 2-4 times, and the steering will stick. Originally, this occurred only on roads that curved however the frequency of occurrence is increasing and it now occurs on straight roads as well.

- San Rafael, CA, USA

The outside temperature was below 32 and it was close to 25 or so. When I was driving the car at 40 mph with engine temp still slightly above cold(not at optimal which is almost half way) and slowed down by using gentle brakes(not hard brakes). Just before the vehicle comes to a full stop, there is unintended acceleration and I could see even the RPM(scale) to spike temporarily. This has been happening every time when outside temp is cold and vehicle is driven with cold or slightly above cold engine temperature. There is a risk of hitting another vehicle or meeting accident if misjudge my braking because of this problem.. please note : this problem disappears when engine temperate is at optimal and I have driving a Honda Accord 2008 exl for last 7 years(was bought new one), I never had experienced this problem in that car even when driven with cold engine.

- Edison, NJ, USA

Driving on the freeway, the vehicle all of a sudden started to brake. I was unable to accelerate and a beeping noise started going off. This continued for about 15 minutes. I pulled over, turned off the car, but as I started driving again, it happened again. The dash showed the car with the skid marks below it blinking as this was happening. I took it to a shop, but they were unable to diagnosis the problem. Now when I make a left turn of any kind, the vehicle continues to do the same thing. I have been trying to research the problem and fix it, but unable. The vehicle has been sitting in my garage since the middle of Oct.

- Long Beach, CA, USA

Sudden deceleration of vehicle: 2004 Toyota Sienna xle. The vsc engages, without warning, on smooth, dry roads and when cornering or negotiating a curve. We are the original owners and have never experienced this until the first incident in late Oct. 2014. We did not take any action because although road conditions good, we were rounding a sharp bend in the road and assumed this had something to do with the incident. Vehicle speed was approximately 25 mph as the vehicle suddenly decelerated, the vsc light came on and a rapid beeping alarm sounded. The vehicle pulled to one side and steering the vehicle became extremely difficult. The whole incident, start to finish, lasted approximately 5 seconds. The next incident happened in early December 2014. Again, all the above described things happened, except vehicle speed was approximately 35 mph going around a gentle curve in the road. I did some research and found many complaints concerning this issue but do not see any recommendations or recalls officially issued by Toyota. It appears most of the dealer recommended repairs did not correct the problem. Today (December 26, 2014), this same issue happened five times within 40 minutes. My wife managed to get the vehicle home and we called our local Toyota dealer, described the issue and they informed us they have never received any complaints concerning rapid deceleration of this model year, before our phone call. I've scheduled an appointment for December 30, 2014 to have the vehicle checked out and have recall work done concerning the "shift lock solenoid assembly". will update after appointment.

- Hampton Bays, NY, USA

While driving on interstate vsc warning light came on, beeping and alarms heard. Engine slowed down and I felt like the vehicle was out of control. The vehicle swerved like it was hydroplaning on a dry highway. Called our repair shop immediately. Car was towed and research was done on the history of the problem in other Toyota mini vans. I was told there were reports of this happening in other vehicles but not enough for a recall to be issued by Toyota, recommendation by the report they found was to replace a sensor which is what was done. That was just over a month ago and the same problem occurred again tonight on a side road going approx 30 mph on dry road. Van is back at shop again tonight. I will be calling the 1-800 number for Toyota, I do not understand why there is not a recall on this issue. Both incidences could have resulted in an accident. Tonight I was driving with my child in the van. This issue could have placed her life in danger had there been an accident.

- Franklin, TN, USA

The contact owns a 2004 Toyota Sienna. The contact stated that while driving approximately 65 mph, the brakes seized. The vehicle resumed normally after sittng for a couple of minutes. The failure was recurring. The vehicle was taken to the dealer where it was diagnosed that the steering angle sensor would need to be replaced. The manufacturer was not made aware of the failure. The failure mileage 143,339.

- Danbury , CT, USA

In the early summer of 2013, I was traveling North on I-15, approx 5 minutes to St. George, Utah on a beautiful clear day when the car began to swerve and the yellow skid light came on and the emergency beeping sound alarmed and the car slows down on its own--I no longer have control over accelerating the speed of the car. It frightened and alarmed me and my passengers. Within about 5 seconds the light went off and the alarming beeping sound stopped and now I have control of the speed of the car. I have traveled that road several times since and the same incident has occurred at approx the same spot. However, in 2014, during my travels to and fro on this same highway where the speed limit is 65-75mph, the incident occurs in several other spots along I-15 North and southbound. The skid light and the alarming beeping sound even went off when coming to a stop going approx. 5mph. The indicator light and alarm sound seems to be getting more and more sensitive. The same incident has been occurring this year every day on my way home from work at the same spot on I-215. Even though the speed limit is 65mph, I have to slow down to less than 50mph in order to avoid this occurrence. This creates a very hazardous situation since I am slowing down for apparently no reason to the cars behind me who are traveling at the speed limit.

- Henderswon, NV, USA

In this initial incident, I was traveling on a curvy road at posted speed limit of 30mph. My vehicle suddenly slowed, as if I was applying the brakes, which I was not, and my steering was compromised. In addition the vsc indicator and symbol flashed on my dashed and beeped. The road was dry. This has occurred 10+ times since. I have brought it to my mechanic, without turning the engine off after the occurrence so that he could "read" the computer but there is no evidence available. We have brought it to the Toyota dealer. They "rebooted" the sensors and said it should be fine. It has continued to happen, on the freeway going uphill at 55 mph, going downhill at 60 mph and has been close to causing a rear end collision each time.

- San Rafael, CA, USA