Originally Posted by typhoon55
Now that could be a valuable lesson - I had no idea the battery in the key could prevent starting.
I guess it would pay to have a spare battery in glove box or change out before it goes. It should give signs of wearing out before complete failure.
You'll know when it's going to cause you problems, because you'll start to loose the range you typically have to unlock your car doors. However, if you're like me, you might start trying to diagnose ignition failures before finding out that this "failure" is actually a "feature".