Woke up today to 8 degrees F (feels like -10) and couldn't get my power lift gate to open. It's now 20 degrees F, nearly 5 hours later and still won't open. All door actuators work fine, my key fob battery was replaced a month ago, and my fuses check out for both the door and the lift gate. Picking up my parents at the airport tomorrow and they'll have luggage ?. Any ideas?