Table 1 shows five common power train related problems of the 2012 Toyota Sienna. The number one most common problem is related to the differential unit (seven problems). The second most common problem is related to the power train (seven problems).
| Problem Category | Number of Problems |
|---|---|
| Differential Unit problems | |
| Power Train problems | |
| Transmission Fluid Leaking problems | |
| Transmission Slip Out Of Gear problems | |
| Driveshaft problems |
The contact owns a 2012 Toyota Sienna. The contact stated that the rear differential was making an abnormal whirling and grinding sound. There were no warning lights illuminated. The contact called the local dealer but the vehicle was not diagnosed or repaired. Read details...
Rear axle coupler assembly (part number 41303-28013) making very loud noise and vibration. Read details...
Front axle leaking fluid Read details...