It was weird. I went to the local computer store for a battery, and he told me that I was the third person that day looking for a battery. And then, when he tested my battery, it worked fine. Everntually Rena sent Simcha with the other keypad which worked, but the whole thing didn't make sense - until I read an article in the New York Times that said:
Across the border region, Israel has lowered a kind of electronic curtain to prevent remote-control bombs, disabling even remote car locks well into Israel.I don't know if that was really why my alarm didn't work. After all, we're pretty far away. But if it is the cause of my car-alarm troubles, it's fine with me.
Just doing my part.