Also, these days...
... with so many sensors and computer chips in everything it could require a "reset". You should be able to do it yourself that doesn't mean it's designed that way. It's like the gas cap on my car, if I screw up the "three clicks" when I close it, I might have to pay my mechanic to reset the "flag" so the engine warning light goes off. Which is stupid of me because I know my brother bought a meter or something that can tell you why the engine light is on, not expensive, and reset him himself.