Anybody tried using their rear windshield washer jet yet? I finally figured out how it works (reading the manual) and it doesn't work! Don't know if it's too darn cold out or if it's broken already. I'll probably be parking in an indoor lot tomorrow for the day, so I'll try then, but anybody know how to debug this? The front ones work fine and I can hear the "wrrr" sound from the motor trying to pump the liquid all the way to the back, but no liquid ever comes out.