| Issue ID | 632836 |
| Internal NHTSA # | 10192998 |
| Manufacurer | TOYOTA MOTOR CORPORATION |
| Brand | TOYOTA |
| Model | SIENNA |
| Model Year | 2004 |
| File date | 11/06/07 |
| Component | POWER TRAIN:AUTOMATIC TRANSMISSION |
| Product type code | VEHICLE |
| Description of the problem | I've seen other complaints about the transmission being hesitant and the car surging and slowing unexpectedly. I've had these problems, too. The dealership told me i needed a flash to the computer that would give the car a shift enhancement. They said it wasn't part of the powertrain warranty, but then agreed to do it for the $45 i initially paid them to look the car over. It shifts more aggressively now, but it still seems to slow and surge unexpectedly and fails to downshift for acceleration at times. Today was my first dangerous situation in which i made a left hand turn right before a curve in the road. Just as i was beginning my turn a car appeared and i had to step hard on the accelerator. The car did not respond as quickly as it should have, but i did manage to make it across. |
| Vehicle Mileage at Failure | 39000 |
| Number of Occurences | 1 |
| Source of the issue | NHTSA WEB SITE |
| City and State | TALLMANSVILLE, WV |
| VIN pattern | 5TDBA22C64SXXXXXX |
| 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 | 17/06/06 |
| Was original owner? | N |
| Anti-lock brakes | Y |
| Cruise control | Y |
| Number of cylinders | 6 |
| Drive train type | AWD |
| Transmission type | AUTO |
| Vehicle speed | 45 |
| 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 | BUCKHANNON TOYOTA |
| Dealer's telephone number | 304-472-7200 |
| Dealer's city | BUCKHANNON |
| Dealer's state code | WV |
| Dealer's ZIP code | 26201 |