What should be paid attention to when changing the front fan of Passat Passat in 2009?

I seem to be getting acquainted with passat recently, I just changed freon for a Passat yesterday, I remember at the end of last month, I still had a Passat passat in the shop, I changed the front fan, I took a lot of trouble, let’s see what happened.This Passat Passat Passat 2009 1.8T manual… Read more What should be paid attention to when changing the front fan of Passat Passat in 2009?