One problem related to transmission fluid leaking has been reported for the 2012 Toyota Sienna. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2012 Toyota Sienna based on all problems reported for the 2012 Sienna.
Front axle leaking fluid.
| Power Train problems | |
| Differential Unit problems | |
| Transmission Slip Out Of Gear problems | |
| Driveshaft problems | |
| Transmission Fluid Leaking problems |