FWIW, I accidentally left my fob in my pants pocket and ran it through the washing machine. I panicked at first, but was gratefully surprised when it still worked.
I did the same thing. Ours did not work, though, so I had my wife disassemble it and set it out to dry. A week later it worked perfect. The funny part is that I had my key and it was her's that was washed. So, I took my key apart at work while instructing her over the phone. She said it was kind of fun, haha.