| Issue ID | 853560 |
| Internal NHTSA # | 10396452 |
| Manufacurer | TOYOTA MOTOR CORPORATION |
| Brand | TOYOTA |
| Model | SIENNA |
| Model Year | 2004 |
| File date | 01/04/05 |
| Component | UNKNOWN OR OTHER |
| Product type code | VEHICLE |
| Description of the problem | Item 1-- this is an awd model with run flats and no space for a spare tire. The low pressure warning for the tires is revolution based, and therefore doesn't activate due to the stiff wall run flat tires. I have had numerous occasions where the tires were very low with no warning, and two occasions where the tires had zero air and were ruined with no warning, and the first indication was a roar and sudden very bumpy ride. These 2 events happened at city speeds, but i fear this event at interstate speeds. The later models were equipped with pressure sensing devices (not revolution sensing). The vehicle has only 38k miles, perfect condition, and i just renewed my extended warranty for 6 more years, so would like a recall retrofit to pressure sensing for safety and peace of mind. I had thought toyota would develop a fix, but to no avail. I have this documented on toyota service invoices and the factory rep has reported there is nothing toyota can do. Item 2--- when pulling out from behind a vehicle to pass and flooring the accelerator, there is a full second of hesitation before the down shifting/acceleration begins. This has caused two near misses. This is documented with toyota, but all i've been told is that it is caused by "drive-by-wire" (?), which i assume is an electrical signal as opposed to a mechanical throttle cable, but again, toyota says there is nothing they can do. |
| Vehicle Mileage at Failure | 8000 |
| Number of Occurences | |
| Source of the issue | PORTABLE SAFETY COMPLAINT FORM (PDF) |
| City and State | MOBILE, AL |
| VIN pattern | 5TDBA22C94SXXXXXX |
| Was vehicle invloved in a crash? | N |
| Was vehicle involved in a fire? | N |
| Was incedent reported to police? | |
| 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? | |
| Anti-lock brakes | |
| Cruise control | |
| Number of cylinders | |
| Drive train type | |
| Transmission type | |
| Vehicle speed | 40 |
| 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 |