BTW, do NOT leave your key fob in your jeans pocket when you throw it in the wash - the fobs don't like water apparently... After drying it out and putting in a fresh battery, it still works, but the X constantly shows the "replace key fob battery soon" notice.
Also, I purchased replacement batteries from Amazon recently and got a bad batch - had to re-order another one to get my good (non-laundered) fob to work. Maybe I should have paid more than $3.89 for the batteries??