| Issue ID | 836565 |
| Internal NHTSA # | 10373971 |
| Manufacurer | TOYOTA MOTOR CORPORATION |
| Brand | TOYOTA |
| Model | SIENNA |
| Model Year | 2004 |
| File date | 24/12/10 |
| Component | VEHICLE SPEED CONTROL |
| Product type code | VEHICLE |
| Description of the problem | 2004 toyota sienna van, the vehicle stability control system (vsc) goes into skid prevention mode and automatically applies the brakes, disconnects the accelerator, and selects one side or wheel to apply braking force to. This has the effect of causing the car to shudder, skid and move dangerously close to the outside edge of a curve. This has occurred 15-20 times in my car since its purchase. I have taken it for repair by the dealer three times. Some "rusted" parts were replaced the first time. The next two times, i was told the vehicle was working properly. The vsc activated at speeds that were at or below the speed limit and in conditions where no realistic possibility of a skd was present. The problem is intermittent as i have driven over the same roads at the same or higher speeds for years without activation of the vsc. When it does activate it is frightening, and it causes a significant danger of losing control of the car or veering out of your lane. After a period of no activity, i have suddenly had 7 incidents in the last week occurring between dec. 24, 2010 and january 2, 2011. The problem first arose approximately three years ago. There have been 4 or 5 isolated incidents, but now there has been a serious and dramatic increase in the frequency of the vsc failure. |
| Vehicle Mileage at Failure | 100000 |
| Number of Occurences | 20 |
| Source of the issue | NHTSA WEB SITE |
| City and State | HALF MOON BAY, CA |
| VIN pattern | 5TDBA22C04SXXXXXX |
| Was vehicle invloved in a crash? | N |
| Was vehicle involved in a fire? | N |
| Was incedent reported to police? | N |
| Was medical attention required? | |
| Was part original equipment? | |
| No. of injured persons | |
| No. of fatalities | |
| Date of purchase | 07/08/26 |
| Was original owner? | N |
| Anti-lock brakes | N |
| Cruise control | N |
| Number of cylinders | 6 |
| Drive train type | |
| Transmission type | |
| Vehicle speed | 35 |
| DoT tire identifier | |
| Tire size | |
| Location of tire code | |
| Type of tire failure code | |
| Was defective tire repaired? | |
| Date of manufacture | |
| Type of child seat code | |
| Type of restraint | |
| Dealer's name | |
| Dealer's telephone number | |
| Dealer's city | |
| Dealer's state code | |
| Dealer's ZIP code |