Mine thawed out (after parking it in the garage and firing up the furnace for a day). But now I'm seeing another issue. When the car is locked, you walk up and put your hand on the door handle, (keyless entry) door unlocks, you pull handle and it "hangs". It's as if there is a two step process to opening the door and it hangs on step 2. If you release the handle, and pull a 2nd time, it opens. This didn't start till after it froze the first time. Hope I didn't "break it" trying to open the door the first time it got frozen. I have an extend warranty but not sure if it covers door latch mechanisms. If it doesn't, I'm going to try and get it fixed under the TSB that covers the issue.
Funny how the car was fine the first two winters and last winter was the coldest (lots of neg zero days).