Symptoms
- Key goes in but won't turn
- Combination entered correctly but shackle won't release
- Shackle is stuck partway open
- Lock has been exposed to weather for a long time
Likely causes
- CommonRust or corrosion inside the lock bodyOutdoor storage, sheds, and gates expose padlocks to moisture over time.
- CommonDirt or grit packed into the keyway or dial mechanismPadlocks on gates and sheds accumulate dust and debris.
- PossibleShackle bent slightly from force or impactA knock or someone trying to pry it open can misalign the shackle.
- Less commonInternal spring or pin mechanism worn or brokenCheap or very old locks can fail internally.
What to do
- Spray a penetrating or dry lubricant (like graphite spray or a silicone-based product) into the keyhole or around the shackle, not household oil, which attracts grit.
- Let it sit for several minutes to work into the mechanism.
- Wiggle the key gently while trying to turn it, or apply slight pressure on the shackle while entering a combination.
- Tap the lock body lightly against a hard surface to help dislodge internal grit, then retry.
- For a combination lock, double-check you have the exact correct sequence, including direction of turns if applicable.
- If it still won't open and it's your own lock with no other way in, bolt cutters or an angle grinder (used carefully) will remove it; consider calling a locksmith instead for a cleaner removal.
Tools and parts
- Penetrating or dry lubricant (graphite/silicone spray)
- Bolt cutters (last resort)
Replacement padlockSearch: “weatherproof padlock replacement”
When to call a pro
A locksmith can pick, drill, or safely cut off a stuck padlock without damaging what it's securing.
Safety
Generally low risk
Generally low risk for a careful person. Stop if anything looks different from what this guide describes.