Happened on my 2007 MKZ twice right after purchase - luckily there was no rain or sprinklers. I complained and they told me there was no way to disable the "global open" so-called feature. Made it sound like "I" was the village idiot for not wanting this wonderful feature they've dreamed up. For the past 2 yrs I have been careful not to keep my keys in my pocket while in the house - they were on the table from Fri night to Sat morning. Came out Sat morning to find windows down and interior soaked after torrential rains Fri night - over half an inch sitting in the armrest wells. I found there "now" is a TSB on it, printed it out and took it back to the dealer but they found a build-date loophole and tell me I must pay $297 for a new module plus $91 to program it. I muttered a few choice words to the gal not quite under my breath and stormed out. Check out: TSB 08-26-5.
I'm still steaming - literally. And now the carpet's starting to stink like mildew...
No longer a happy Lincoln driver.