What We Check on a Lock Visit

Every lock visit has two parts: the job you called about, and a look at the parts around it that decide whether the job lasts. A rekeyed cylinder in a door that has dropped on its hinges will still drag, and a new keypad deadbolt on a strike that is out of line will still miss. So whatever the visit is for, we look at the lock, the door it is on, the strike it locks into and the keys that work it.

The lists differ by visit, because a car key and a front door fail in different ways, but each one ends the same way: with what was found, explained plainly.

Checks on a Home Lockout

Locksmith

• The Way InWhich door to open, and the least damaging way through its lock or latch.
• The Latch and BoltWhether the latch catches and the bolt throws fully once the door is open.
• The CylinderHow the key turns, and whether worn pins or grit helped cause the lockout.
• The Strike and FrameThat the strike lines up, so the door closes and locks without a push.
• AfterwardsWhat caused the lockout, explained plainly, and whether the lock needs more work.

A lockout is often the first sign of a lock problem rather than bad luck. A knob that locks every time the door shuts behind you, a key that snapped in a cylinder that had begun to drag, a latch that jams and will not draw back with the key: each of these will do it again. Opening the door is the urgent part of a home lockout, and checking the lock is what makes the next one less likely.

Checks on a Rekey or Lock Change

Locksmith

• Every Entry PointFront, back and side doors, the garage entry door and any keyed gate.
• Cylinder Type and KeywayWhich locks share a keyway, and so can be set to a single key.
• Wear in the Plug and PinsWhether a cylinder is sound enough to rekey or worn enough to replace.
• The Bolt and StrikeThat each bolt throws fully and locks without lifting or pushing the door.
• AfterwardsEach new key tried in every lock, and any worn part named plainly.

This check often shows that a house’s locks are not all alike: a front deadbolt from one maker, a back door knob from another, a garage entry lock older than both. Locks that share a keyway can be rekeyed to one key, and the rest need a new cylinder or a new lock. For a landlord between tenants, the same check runs through every door of the unit and, in a master key system, the master key as well.

Checks on Car Keys and Locked Cars

Locksmith

• The VehicleMake, model and year, which decide the key blank and whether a chip is used.
• The Door LockThe way into the car with the least risk to the lock and the weatherstrip.
• The Key BladeWear on the old key’s cuts, so a spare matches the lock, not the wear.
• The Transponder ChipWhether the key carries a chip, and that the car accepts the new one.
• AfterwardsEach key tried in the doors and the ignition, and the car started with it.

A car key visit often shows why a key failed. A blade worn smooth, a key bent from riding on a heavy key ring, an ignition that has grown stiff: each makes a broken key more likely, and a key that broke once is close to the end of its life. Having a spare cut and programmed while one key still works is the simplest way to stay ahead of it, and car key work takes in lockouts, spares, transponder programming and broken key extraction.

Checks on a Lock Upgrade

Locksmith

• The Door PrepBackset, bore size and door thickness, measured before a new lock goes on.
• The Door’s SwingThat the door hangs square, so a new bolt meets its strike without binding.
• The Strike and ScrewsA strike set in solid wood, with long screws into the framing behind it.
• Batteries and CodesBattery access, the backup key, and how codes are added and removed.
• AfterwardsThe lock tried from both sides with every key and code that should work.

A keypad or smart lock is only as good as the door it is fitted to. A motorized bolt that drags on a strike out of line drains its batteries and can stop short of locking, and a door that has dropped on its hinges does much the same to a manual deadbolt. That is why fitting a new lock begins with the door: its measurements, its swing and its strike.

When a Lock Visit Is Finished

A lock visit is finished when the door works, not when the tools are packed. In the trade that comes down to a few plain tests:

• The door closes and latches without a push, a lift or a slam.
• The bolt throws its full length and turns without force, from inside and outside.
• Each key is tried in every lock it is meant for, and opens it.
• Keypads and smart locks open with every code that should work, and with the backup key.
• After a rekey, the old keys are tried too, and no longer turn.

A part that is worn but still working is worth naming before the visit ends: a cylinder starting to drag, a strike screw that no longer bites, a key cut close to its limit. That way the next step is your decision rather than a surprise. A locksmith will normally explain what was found in plain words and point out anything that should not wait.

Things to Watch in the Weeks After

• A key that starts to drag again: usually dust or a dry cylinder, and the safe first steps are worth trying before anything else.
• A bolt that needs the door pushed or pulled before it will turn.
• A keypad that beeps a low-battery warning, or a smart lock that drops its connection.
• A door that starts to rub or stick after a monsoon storm, which can leave the bolt out of line with its strike.

Any of these is worth a call before it turns into a lockout.