| Issue ID | 951931 |
| Internal NHTSA # | 10485341 |
| Manufacurer | TOYOTA MOTOR CORPORATION |
| Brand | TOYOTA |
| Model | SIENNA |
| Model Year | 2004 |
| File date | 26/09/12 |
| Component | VEHICLE SPEED CONTROL |
| Product type code | VEHICLE |
| Description of the problem | Vsc (vehicle stability control) is activated in curves at speeds between 25 mph and 60 mph. Surface is dry and curves are gradual with appropriate and safe driving speeds. The vsc light goes on and warning buzzer goes off. The brakes shudder and the vehicle is de-throttled. Vehicle control is reduced for 3 to 5 seconds and then the vsc deactivates. Concerned that this will be a problem when the road surface is slick. Dealer could not find malfunction codes and could not duplicate problem so no fix. This situation occurs almost every day at least once. Keeping incident log. Web sites indicate this could be steering sensor calibration. Dealer cleaned sensor parts and this did not resolve problem. Contacted toyota and they said to continue working with the dealer. Tsb is out for yaw sensor failure and steering calibration. |
| Vehicle Mileage at Failure | 161000 |
| Number of Occurences | 1 |
| Source of the issue | NHTSA WEB SITE |
| City and State | FAIRVIEW, NC |
| VIN pattern | 5TDZA22C34SXXXXXX |
| 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 | 0 |
| No. of fatalities | 0 |
| 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 | 30 |
| 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 |