If your windshield is heated, you should see a sometimes-colored heating grid where your windshield wipers typically park themselves. This is common in vehicles that have a �Winter Package� installed.
If your windshield wipers come on automatically when it starts to rain, you most likely have rain sensors. Rain sensors are commonly installed in �Luxury� or �Sport� packages.
Lane Departure Warning System: (Higher end vehicles)
Vehicles that are equipped with this system will have a small warning light come on in either mirror while driving when another car is in your blind spot.
If your windshield detects condensation [window fogging], it will change airflow before it becomes obvious to the driver.