This morning when I got in my car I turned on the front wipers to clear the windshield and at the same time the rear wiper came on. Thinking I was half asleep I tried it again turned on the front wipers and the rear one came on again (I made sure I didn't turn on the rear wiper). After driving for 5 mins I tried it again but this time just the front came on. Then I tried turning on the back wiper and it worked fine.. It was maybe -15 last nite. Anyone else having this problem?