general problems of the 2008 Toyota Sienna

I have had the traction control go on while driving on the highway even when I turn it off. Sometimes the vsc and trac off lights go on while driving. The roads are dry. Whenever I take it in to the mechanic, all the lights are off. They pulled a zero calibration code and recalibrated. It still kept happening. Then I was driving around a curve on highway speeds when the traction control light went on and the van suddenly braked on its own and I almost lost control. The tires are new and the roads were dry.

Issues with vsc. The sensor alarm goes off when driving at more than 50 mph and slightly turning the steering wheel. The car brakes itself and this is dangerous. It happens all the time, it has been more than 5-6 years and we are to the point of not using the car on the freeway to prevent a potential fatal accident. I found posts describing the same issue with this model of Toyota. Car should be recalled to get this fixed.

The vehicle vsc engaged multiple times even at low speed of 30 mph under the road speed limit. The brake applied and even the vehicle stop to respond to the acceleration. We have 3 little kids and old parents in this vehicle. Toyota should own this problem and fix it free of charge as a factory recall.

The traction control light is coming on during low speed turns on dry pavement.

2008 Toyota Sienna. Driving down steep right turns, vsc light comes on, urgent beeping alarm and tires grip and grip vehicle brakes going 20-30+ mph on dry road. Very scary and dangerous, and has continues repeatedly over the past year on curvy right turns. Local mechanics don't know what is wrong with the vehicle. Many Sienna owners have similar problems listed on carguru. . Read more...

The vehicle stability control will unexpectedly engage in instances where it shouldn't activate. The most common is a long, slight curve on at freeway speeds on dry pavement. The second most common scenario is accelerating to enter the freeway. When vsc engages, the vehicle will lurch to the side it was activated on and curtail any acceleration. This makes the vehicle hard to control when on a freeway curve and when attempting to accelerate to merge onto the freeway, causing unexpected motion that is a hazard to remaining on the road or causing the vehicle to be in an accident with other vehicles. There is no indication that there are malfunctions in any system that would cause this to occur. Note: mileage on the odometer is ~170,000 miles.

While driving on a slope, incline or decline, my traction control light ( car with squiggles behind it) comes on, a loud �beep beep beep� sounds, and my car brakes on its own. Always happens while in motion. Highway driving. 90 percent of the time while on an incline or decline. It scares the heck out of you causing an unsafe condition. Additionally, when the brakes apply, it pulls you out of your lane. The first occurrence was 3 weeks ago. Has happened multiple times since. It doesn't seem to be intermittent anymore. You can count on it happening when your on a slope.

The traction control, stability, and abs engage in turns (steering input) ranging from speeds of 25-55 mph. It happens on flat surfaces, inclines and declines. The turn range from sharp turns to slight turns that there is no reduction of speed to navigate the turn. When it occurs the vehicle rapidly decelerates and pulls to the right. When trying to accelerate in a turn the vehicle will not accelerate until there is no steering input. Dealers and mechanics can not determine the cause. It has been occurring daily for about 6 months. This has caused many near crashes.

Tl- the contact owns a 2008 Toyota Sienna. The contact stated that while driving at 60 mph, while making a left turned, the steering wheel would make an abnormal alarm sound. The vehicle was taken to an independent mechanic where it was diagnosed but could not find a failure code. The contact called frontier Toyota dealer at (661) 291-2900, located at 23621 creekside rd, valencia, CA 91355, and left a voicemail. The vehicle was not taken to a dealer, the vehicle was not repaired. The manufacturer was not notified of the failure. The approximate failure mileage 175,000. Aw.

The vsc and traction control system and slip indicator warning lights come on around curves just as the front wheels grab. I have taken it to several mechanic s and Toyota dealership and they said nothing shows up on the dynastic test machine. So, it seems to me that this is hazardous situation and records show I hold Toyota responsible for my family's safety and well-being. [xxxx] parts of this document have been redacted to protect personally identifiable information pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).

My 2008 Toyota Sienna suddenly slams on brakes when turning right. Used to be occasionally on mountain curves during last year, but now does it randomly at highway speeds on straight roads and is very dangerous! how do I get Toyota to fix this obvious design defect? car has 230k miles.

Tl the contact owns a 2008 Toyota Sienna. When the contact switched lanes or made a turn, the brakes activated on their own. The failure occurred on flat or curved roads and while driving 30 mph. Sometimes the brakes worked properly, but sometimes they did not work at all. The contact also stated that the vehicle would occasionally accelerate and decelerate on its own and the steering wheel made an abnormal ticking noise. Furthermore, the vsc and traction control indicators illuminated. The vehicle was taken to Toyota knoxville (10415 parkside dr, knoxville, TN 37922), but they did not assist. The vehicle was then taken to fox Toyota (228 fox family ln, clinton, TN 37716) where it was diagnosed that a steering angle sensor needed to be installed. The vehicle was not repaired. The manufacturer was made aware of the failures and provided a case number. The failure mileage was 170,000.

While driving the vsc/abs system comes on unexpectedly causing vehicle to brake and effect steering. It is most frequently noticed when steering on curves 30-40 mph. I have replaced tires, front steering components and dealer cannot duplicate. I believe wheel speed/yaw sensor calibration is affecting the vsc system. This is a very scary situation to be in that could lead to a serious accident. Your braking and steering affected all at once unexpectedly is dangerous. Please investigate and provide solution ASAP.

We had been noticing a small leak under our 2008 Toyota Sienna for a few months so we took it in to the Toyota service center to have it checked out. A Toyota service technician told us that the passenger side power steering rack boot is torn and the seal is leaking, so it needs to be replaced. He said this is a very common problem/defect with 2008 Siennas on the passenger side.

About a five years ago the slip indicator light (car with swervy lines) started coming on intermittently while turning on highways etc. (but not when any risk of tires slipping). I brought it to Toyota three different times over the years and Toyota always states they can not duplicate issue and states they can't fix it but maybe drive slower (really it has nothing to with my spee after years of dealing with this its been something we just deal with). The vsc light also comes on and alarm sometimes sounds while driving. Two more trips to Toyota and several visits to different mechanics and nobody can find out the problem. In the last 6 months the abs system is also being activated without me applying the brakes. It does it without warning. All of these issues can be on a curve at different speeds or on a slight or medium turns (not real sharp turns), going uphill or downhill and left or right. Our van has about 150,000 miles on it now on 2020 but when the problem first started it only had around 110,000 miles on it. We have changed brakes, tires, rotors, brushing on advice from different mechanics to try to fix the issue. Nothing works. Toyota cannot figure it out. It's becoming more dangerous because now the abs is being activated with this problem. I can't tell if my brake lights come on so that drivers behind me can tell that I'm slowing down very quickly. This jerks those in the car and I'm afraid we may lose control. I have read on different web sites that this is common with a Toyota and it's just not my van. If I had the money I would buy a different vehicle but being on a fixed income I don't have the luxury to do so. How can a car company have so many complaints from consumers about this common problem but still can't tell us how to fix it? it's Toyota's design they should be able to tell the consumer what is causing this issue and how to fix it.

My 2008 Toyota Sienna le was bought brand new, have it serviced at Toyota dealers, on June 5th, 2014, l took the van to a dealer for a regular service l was told my steering rack was leaking and will need to have the whole steering rack replace. The van only has 57,000 + on it and serviced regularly. With the history of several recall on Sienna, l believed this might be a defect from Toyota. This is a safety issue which the dealer refused to acknowledge caused the van warrant has ran out even though l bought an extended warranty (cost guard) which l was told again that the cost guard warranty has expired too. I have reported this issue to Toyota but nothing was done. I am appealing to your honorable office to investigate and ask Toyota to treat this as a defect and safety issue. Thanks for your assistance, o. Ijaduola.

2008 Sienna has developed steering issue and almost lost steering control of van. Problem appears to be failure of steering intermediate shaft that resulted in intermediate ability to steer vehicle. Very choppy steering. This is a very common issue with Toyotas. Contacted Toyota customer service and was informed there are TSB's for prior and post year vehicles but not for 08 Sienna. Toyota needs to further investigate as failure of steering component is not acceptable. TSB is not acceptable.

I have 2008 Toyota Sienna limited awd. I have about 16500 miles. My problem started when the car had about 1000 miles. On parking when I turn the wheel to the right, shortly after I started turning the wheel I could hear and feel (on the wheel) a constant clicking noise. This noise shows up only when you turn to the right. It does not show when you turn to the left. I brought the car to Toyota of alexandria, va. The car spend days there and they said that they don't have clue what is the problem! they opened a case with Toyota and I had a meeting with a Toyota field specialist. I had multiple questions - why the problem deteriorated, why it shows up only when you turn to the right and not to the left, etc. My questions were unanswered. This person was not trying to fix my problem. He repeated word by word dealership foreman's words. I thought they had a predefined script. I brought it to ourisman chantilly Toyota, va. They replaced cv half shaft assembly. That didn't fix the problem. They replaced sop-shaft and that didn't fix the problem. I picked up my car and I've been told that the problem is airbag clock spring. I was told replacing the clock spring would not fix the problem because all of them will have the same problem. I've been told that it's a common issue on all Toyota Sienna awd vans. Again in the parking start turning to the right, before the wheel locks I can feel and hear clicking noise. I brought it to fitzgerlad Toyota, gaithersburg, MD. Replaced the lower steering shaft and put a special grease. The noise went away for about 1500 miles, but slowly started coming back. It is getting frustrating and is getting louder as I put more miles. As per the dealer, the key is a special grease and it is a special order. I was on the back order list and was #78 for the region. It seems that there is a lot of demand for this and Toyota knows that. My concern is that nobody knows what the problem is and if that problem presents a safety issue. Thanks a lot!.

The contact owns a 2008 Toyota Sienna. The contact stated that there was a rattling noise in the passengers side sliding door. The vehicle was taken to the dealer who installed a rubber lining but that did not resolve the failure. The contact stated that the doors were not properly aligned. The throttle control has also malfunctioned. The contact stated that when the accelerator pedal was depressed the vehicle accelerated uncontrollably. The dealer stated that the vehicle was functioning normally. The contact stated that the vehicle also began pulling to the left, but that has not been diagnosed by the dealer at this time. The current mileage was 83,000.