I can spend 30 minutes shaking, twisting, twisting, swearing, coaxing and coaxing into opening the key , and IT WILL NOT SWITCH OFF. And then, like magic, without doing anything else, which I haven't tried several times in the last half hour, it opens. Sometimes it works the first time, although not very often. The good news is that no one is going to vote for him any time soon. Last trip for this lock this weekend, and then I'm throwing it away. Good redemption for such an expensive lock.