I ran out of fluid on a cold spell in New england and replaced but washer not working in front or rear. I also do not seem to hear the pump. Any reason the pump would go right when I ran out of fluid, like small amount of ice build up or something. If it was a bit of ice, wouldn't I still hear the motor/pump? Just wondering if I should wait for a warm day or just go ahead and replace the pump. Also, the manual doesn't list a washer fuel but read in a forum that the wiper fuse is the same as the washer fuse and wipers work. Thanks for any help.