Hi, I have question, does anybody know when windshield washer nozzles are heated? This morning after driving for 10-15min in 23 degrees I was trying to wash salt from my windshield but washer nozzles were frozen. Are those heaters supposed to work all the time, or only when defroster/ deffogger are on. My old (w/o climate pkg) Volvo's nozzles would only froze in single digits.