My car doors were no longer responding to the key. I made adjustments inside and nothing worked. This morning I decided it might be the battery for the key so I went out to the garage in the monsoon that is here now and tried my second key. It worked. So I deduced the answer. I am proud of myself.
In many situations, thinking thoroughly through the problem allows for a solution. It doesn't always work, but solutions never come to those who simply give up. I'm working on tomorrow today.