But it is an example of a wrong belief. Which, if we assume that theism is a wrong belief, we must equate the two as both being false statements. If you don't like the car key example, simply substitute it for any other belief that you hold that has a high likely hood of being false; or do you claim you have none.

Further, You still ignore the fundamental argument, and stick on the example. If it not possible to have a blind spot in reason, but be reasonable in all (is anyone really reasonable in all instances? -- let's say many instead) other instances.