During the last two snow storms, the front sensors on my Q50S make the warning light on the front camera go off every time I slow down or stop. When I have pulled the car over, there is not even any build up on the sensors. What causes this and how do I fix it so I don't have to listen to the loud warning signal that there is something in front of the car when there is nothing? Are there more than those 2 sensors on the front bumper?