I just do not understand. I have driven through all types of rain conditions with my Model Y and just do not have an issue with them working by just using "Voice Command". I am very familiar with rain in the United Kingdom and throughout Europe. My Mother was from southern Germany. Currently I have family living from Thalfang, Germany, near the Luxenberg, French, Belgium border to Bonndorf in the very southern part of Germany and friends living in Ireland. I have driven all over this area and find the rainy conditions very similar to what we have many times in Ohio. I will give you a little information as to what I have learned with the Auto setting. If your window has any dirt on it the wipers will run full bore trying to remove the dirt. If you have this issue use a blue nylon scrub pad with dish soap and thoroughly clean the window to remove the issue.