Automakers have started adding features that remind you to check the back when you park, Toyota has now taken that a step further, adding a feature it calls Advanced Rear Seat Reminder to all Siennas.
Advanced Rear Seat Reminder uses millimeter-wave radar inside the car to check for movement after it’s parked. It can then send notifications to the owner if it thinks they’ve left someone behind. If it senses any movement in the minivan after it’s been turned off, the driver’s door has been opened and closed, and the car has been locked, it will flash the hazard lights and make a noise. After 90 seconds, if you still haven’t come back to check the car, and movement is still detected, it will honk the horn at you.