One problem related to automatic transmission torque converter has been reported for the 2002 Toyota Sienna. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2002 Toyota Sienna based on all problems reported for the 2002 Sienna.
Observed slipping during full stops, engine died several occasions before the actual total failure of parts involved, loss of forward motion or speed pick-up, transmission fluid leaked (Toyota issued an automatic transaxle warranty enhancement notice involving 1998-2000 Siennas but apparently the company already have knowledge of this problem to occur).
| Power Train problems | |
| Automatic Transmission problems | |
| Transmission Fluid Leaking problems | |
| Automatic Transmission Column Shift problems | |
| Automatic Transmission Torque Converter problems |