To quickly fix a door lock that won't turn, thoroughly clean the keyway and internal tumblers by spraying a dry Teflon or graphite lubricant directly into the cylinder. Never use grease or standard WD-40, as they attract dust and cause internal locking pins to stick permanently.
To fix a lock that won't turn, first ensure the key is fully inserted and the door isn't binding by pulling, pushing, or lifting the handle. Then, lubricate the internal mechanism using powdered graphite or a PTFE-based spray. Avoid oil-based products like WD-40, which can attract dirt and worsen the jam.
Sometimes a little jiggle is all you need. Gently insert the key all the way into the lock and try wiggling it up and down while turning it slowly. This can help the pins inside the lock align with the key's grooves. Be careful not to use too much force—you don't want to break the key off inside the lock.
Open a stuck lock by lubricating the mechanism with graphite or silicone spray, jiggling the key gently, or using a stiff plastic card to retract the spring latch. If it is a door, lift the handle while pushing or remove the hinge pins to bypass the lock.
Here are national average cost estimates for various locksmith services: Lockout service cost: $166-$192. Repair broken lock: $188-$218. Lost key, need a replacement key: $188-$220.
The short answer: no, you shouldn't use standard WD40 on locks. Many people try using WD40 on locks to loosen them when they get stuck, since it works as a lubricant for many things. But standard WD40 actually does the opposite. WD40 strips a lock of its natural lubricant and can make your lock stiffer or even sticky.
The best lubricant for a sticky lock depends on the lock's location, but Teflon (PTFE) or silicone-based dry lubricants are generally the top choices. For maximum longevity and clean operation, professionals recommend using specialized products rather than standard wet oils.
To force a lock open, choose a method based on the lock type: credit card (for standard spring-latch doors), lock picking (for pin-tumbler locks), or cutting/shimming (for padlocks). Always ensure you have the legal right to access the lock before proceeding.
To fix a sticky lock, start by cleaning the keyhole with compressed air and applying a dry, PTFE-based or powdered graphite lubricant (avoid heavy oils). Insert and turn your key several times to work the lubricant through the internal tumblers.
Accumulated debris or dirt inside the lock can obstruct the key's smooth turning. Dust, small particles, or even metal shavings can build up inside the lock cylinder, preventing the key from engaging the locking mechanism properly.
Replacing a door lock actuator typically costs between $150 and $400 per door for parts and professional labor. Costs vary significantly by vehicle, with, for example, a 2010 Mercedes-Benz repair costing around $691 and a 2014 GMC Sierra around $423. For many, the part costs $125–$250, plus 1–2 hours of labor.
Quick fix box (try these first):
If your lock suddenly stopped working, it usually comes down to door frame shifting, a misaligned latch, or a dry/dirty locking mechanism.
Resetting your Combination Lock
A lock may normally be changed by a competent locksmith in 20 to 30 minutes. This timetable is based on the supposition that they will be using regular residential door locks and that no further complications will arise. However, a few factors could make this period longer.
If you like the current locks it would be MUCH cheaper to have a locksmith come out to rekey them. Just make sure you call a reputable locksmith in your area and avoid any 1-800 numbers. I would also suggest buying your locks from a local locksmith if they have a storefront.
The best lock lubricants are dry lubricants (like PTFE or graphite) or Teflon-based wet lubricants. Locksmiths strongly advise against using regular household oil or standard WD-40, as they attract dirt and will eventually gum up the lock mechanism.
The ideal way to fix a seized lock is to use a lubricant. WD-40 offers several solutions to maintain your locks: WD-40 Multifunctional Product, WD-40 Specialist Locks Lubricant or WD-40 Specialist PTFE Dry Lubricant. Each of them has its advantages and can therefore meet your lock maintenance needs.
To fix a stiff lock, apply a dry lubricant like powdered graphite or Tri-Flow into the keyway, then work your key in and out to distribute it. Avoid standard oil-based products like WD-40, which can attract dirt and cause the lock to gum up.
To free a stuck lock quickly, apply a dry lubricant like powdered graphite or a PTFE-based spray (such as Tri-Flow or Houdini) into the keyway. Insert your key and gently jiggle it while applying turning pressure to distribute the lubricant and free the pins. Avoid using standard heavy oils.
How do I lubricate my locks? PTFE lubricants typically come in an aerosol canister with a straw, ideal for using as a lock cylinder lubricant. Place the straw inside the lock and shoot a couple of short sprays directly into the lock cylinder.