Operation Condition
WARNING: This page is about a different car, the 2014 Kia Optima. However, it is still accessible from the selected car via links, so may be relevant.
In case that engine starts under wiper switch AUTO, rain sensor activates after once wiper operation to inform the driver that the system is under AUTO.
NOTE:
In case that the rain sensor doesn't work or malfunction, manual wiper switch operation is needed by the driver.