The vehicle has a standard installation of a kick sensor for the rear hatch. I purchased the vehicle used and was able to start the vehicle and drive it for a period of time hoping to charge up the 12V battery. However, upon stopping the vehicle I could not restart it. Even after repeated jumpstart and driving the vehicle for over 45 minutes, the 12 V battery could not restart the car. I read about a similar issue with 2022 Toyota vehicles and so I followed the directions to disable the kick sensor. I then jumpstarted the car, drove it around and I found I could restart the car even after a short drive. I left the vehicle sitting in my driveway for two days and I could still restart the vehicle. I believe the 2023 Toyota sienna has the same issue as the 2022 model and the kick sensor needs to be replaced so it dsnt drain the 12V battery when the sensor gets dirty. I live in the Midwest and this happened during January when there was snow and slush on the streets.