Why does the key go in but not turn?

The most common causes are a seized cylinder, a worn key or a misaligned door pressing on the bolts. First of all, do not force it: if you lever with the key, it snaps inside.

Try this carefully:

• Push or pull the door slightly while you turn. If it turns that way, the problem is the door’s alignment.
• Try another key for the same cylinder. If that one works, yours is worn.
• Put in a little graphite or lock lubricant, never oil.

On the coast salt air seizes cylinders badly, especially in houses that stay shut for a while.

If nothing works, see key will not turn or our lock repair service.