| Issue ID | 1044659 |
| Internal NHTSA # | 10567687 |
| Manufacurer | Toyota Motor Corporation |
| Brand | TOYOTA |
| Model | SIENNA |
| Model Year | 2004 |
| File date | 28/02/14 |
| Component | ELECTRONIC STABILITY CONTROL |
| Product type code | VEHICLE |
| Description of the problem | Summary: sensor in stability control failed and falsely reported crisis situation, causing computer to seize control to slow vehicle and change course. Long version: while driving straight on city street, suddenly vehicle slowed and pulled to side, stability control light and audio alarm activated, heard grinding noise that sounded like abs. Condition persisted if driving over 5-10 mph. Crawled to nearby non-dealer repair shop. Diagnosis/solution: steering angle sensor reporting wheels at 250 degrees when actually straight ahead, would not recalibrate, circuit integrity otherwise good, sensor was replaced. No residual problems noted so far since then (one day). I have the failed sensor. This sensor problem was cause of a production change and tsb br008-04 in the first year. Obviously toyota has known about this problem for years, but no recall. Other accounts exist on line of people who have had this happen. This is a major safety hazard. It's the mechanical equivalent of riding with a driver on lsd who is braking/swerving to avoid hallucinations. I was lucky to be going slowly on an uncrowded street, but at higher speed or crowded conditions this could be a disaster. Toyota has not been terribly helpful so far, but discussion will continue.... |
| Vehicle Mileage at Failure | 96956 |
| Number of Occurences | 1 |
| Source of the issue | NHTSA WEB SITE |
| City and State | MADISON, WI |
| VIN pattern | 5TDZA23C64SXXXXXX |
| 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 | 25 |
| 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 |