If you cannot secure your bike, please call 202-999-3924 right away!
1) Check your key and make sure that it is not bent, or twisted, and the keyway is clear. Your key should insert all the way and turn 180 degrees smoothly. If it only turns 90 degrees or you can't insert the key all the way, take a look at the cylinder to make sure that all the discs are aligned.
2) You can align the discs by turning the key back and forth, little by little the key will insert further. Once you push the disc back into place, your key should insert fully and turn 180 degrees.