The Tardis was totally unsteerable until about the King's Demons. After that she only tends to land off course if dragged off course.
Oh, the Doctor had some control of it much earlier than that, it just wasn't reliable. In "Planet of the Spiders" he was able to make his way to Metebelis III and back, though not easily. In "State of Decay," I think it was, he'd improved his control enough to be able to make a short, controlled hop from one location on a planet to another.