The 2006 Toyota Sienna has 5 recalls, the most serious being a fire risk from aftermarket seat heaters where a damaged copper heating element can short circuit and ignite, and a separate transmission issue where the shift lever can be moved out of Park without pressing the brake pedal, allowing the vehicle to roll or back over someone.
The spare tire system has two related recalls affecting vehicles registered in or originally sold in salt-belt states across the Midwest and Northeast. Road salt corrodes the cable that holds the spare tire under the vehicle, and if the cable breaks, the spare can fall free while driving and become a road hazard for other vehicles. Prior repair attempts did not fully resolve this issue, which is why it appears under more than one filing. On the transmission side, a fault in the shift lock assembly allows the gear selector to move out of Park without the brake pedal being pressed, meaning an unattended vehicle can roll if the parking brake is not set. This is a separate mechanical path to the same rollaway risk described in the more severe transmission recall above.