| Issue ID | 1543195 |
| Internal NHTSA # | 11184017 |
| Manufacurer | Toyota Motor Corporation |
| Brand | TOYOTA |
| Model | SIENNA |
| Model Year | 2019 |
| File date | 15/02/19 |
| Component | FUEL/PROPULSION SYSTEM |
| Product type code | VEHICLE |
| Description of the problem | Immediately after purchasing this new 2019 toyota sienna i became aware of the vehicle having acceleration problems while attempting to accelerate gradually in a low speed/low torque setting. This occurs at what could be described as parking lot speeds, 5 to 25 mph, primarily, although the vehicle hesitates and then lurches also at higher speeds when downshifting to gain torque in a 30-50 mph range also. This hesitation, balking, and then rapid lurching forward at low speeds has caused passengers to comment about "whiplash" and being pushed back into their seats when the vehicle does engage with unexpected forward motion. This vehicle was purchased on 2-18-2019. After driving the vehicle for a reasonable amount of time and miles i contacted our sales agent who set a service appointment for monday feb 25, 2019. On 2-25-2019 i drove the vehicle to the dealer's service dept with "mileage in" of 250 mi. And "mileage out" of 251. Service invoice number 784852 states that the ecu was calibrated and reset. Upon driving the vehicle it became obvious that the problems were no different and perhaps worse. On march 1, 2019 i returned the vehicle to the dealer and took the service manager and a tech-expert for a ride. The tech acknowledged the stall and lurch phenomenon and said he "has dealt with this before". The tech and the service manager told me they were opening a case with toyota for possible input to resolve this problem. I believe this a serious potential safety issue as the forward lurching of the vehicle could result in serious injury as a result vehicle design and engineering. Other toyota owners have discussed this problem via internet forums. It would appear to affect 2018 & 2019 siennas with "throttle by wire" design and their 8 speed transmission. |
| Vehicle Mileage at Failure | 10 |
| Number of Occurences | |
| Source of the issue | NHTSA WEB SITE |
| City and State | DELTON, MI |
| VIN pattern | 5TDKZ3DC1KSXXXXXX |
| Was vehicle invloved in a crash? | N |
| Was vehicle involved in a fire? | N |
| Was incedent reported to police? | N |
| Was medical attention required? | N |
| 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 | |
| Drive train type | |
| Transmission type | |
| Vehicle speed | 10 |
| 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 |