In short:
- Work out what kind of lock you have first: electronic keypad, mechanical dial or key. Each fails in its own way.
- On a keypad safe, flat batteries and a wrong-code lockout are common reasons it won't open. Fit the batteries your manual specifies, then wait out any lockout before trying once more.
- Your safe's manual is the only reliable guide to its emergency key or power provisions. Check it before you do anything else.
- Don't drill, pry or keep punching in codes. It makes the job harder and can leave a firearm safe that no longer does its job.
- Have proof that the safe is yours, plus the make, the lock type and a note of what the keypad shows or how it beeps.
Start with the type of lock
A safe that won't open sounds like one problem, but what's going wrong depends a lot on the lock. Most home, office and firearm safes have one of three:
- Electronic keypad. You enter a code and a small motor or solenoid in the lock moves the lock bolt. It needs battery power, and it has its own rules about wrong codes.
- Mechanical dial. You turn a dial through a set sequence of numbers. It needs no power, but it does need careful dialling.
- Key lock. A dedicated safe key, sometimes alongside a keypad as an emergency key.
Whichever lock you have, there's usually a handle as well. The lock only frees the safe's bolts; the handle is what pulls them back. So "won't open" can mean the lock isn't releasing, or the lock has released but the handle or bolts are stuck. The illustration shows how these parts fit together.
Symptoms and likely causes
| What happens | Lock type | Likely causes | What you can safely do |
|---|---|---|---|
| Keypad completely dead: no light, no beep | Electronic | Flat batteries; a loose keypad connection or a failed keypad | Fit fresh batteries of the type your manual specifies. If it's still dead, check the manual for its emergency key or power provisions, then call |
| Keypad beeps and lights, but the right code doesn't open it | Electronic | Wrong-code lockout; weak batteries; a programmed time delay; a typing slip | Stop entering codes. Wait the lockout time your manual gives, then try once, slowly |
| Low-battery warning comes back soon after new batteries | Electronic | A fault in the keypad or lock | Use the safe as little as possible and book a repair while it still opens |
| Code accepted (or key turns), but the handle won't move | Any | Lock bolt held by side pressure; something pushing on the door from inside; jammed bolt-work | Don't force the handle. See the section on handles and door pressure below |
| Dial turns normally but the safe stays locked | Mechanical dial | A number overshot; the wrong index mark used; dialled too fast; a worn lock | Start again from the beginning and follow your lock's instructions exactly, slowly. A few careful tries, then call |
| Dial feels loose, gritty or spins without resistance | Mechanical dial | A fault inside the lock or dial | Stop and call. Repeated turning can make it worse |
| Key won't go in, or goes in but won't turn | Key | Wrong or damaged key; dirt in the keyway; a worn lock | Check it's the right key and that it isn't bent. Don't force it, and don't spray anything in unless the maker's manual says to |
| Safe won't open after someone tried to break in | Any | Damage to the lock, keypad or bolt-work | Leave it as it is, report the break-in, and call |
Office safes sometimes have extra features set up by whoever installed them. Sargent & Greenleaf's troubleshooting guide for its 6120 keypad lock, for example, lists three beeps after the code, with the lock staying shut, as a sign of time-delay mode: the lock deliberately waits before it opens. If you're not sure how your office safe was set up, ask whoever manages it before assuming it's faulty. Our guide on office lock problems before you call covers the wider checks for business premises.
Electronic keypads: batteries and the manual
Batteries are the first thing to check on a keypad safe. Battery type and position vary a lot between makes. Sargent & Greenleaf's 6120 lock runs on two nine-volt alkaline batteries under the keypad housing. Yale's home safe range (models such as YSB/200/EB1) takes four AA batteries in a compartment on the back of the door, which you can only reach with the door open. Yale's manual says the display shows a warning, with a warning sound, when the batteries need changing, and that changing them doesn't erase your user code.
That second layout is why many safes come with a separate emergency provision. On some it's an override key; on others it's a way of powering the keypad from outside. Exactly what your safe has, where it is and how it's used is in your manual, not here. Look for it in the paperwork that came with the safe or on the maker's website, using the model number.
- Fit new batteries of the type and number the manual specifies. Good-quality alkaline batteries are what most makers call for.
- Check the battery contacts look clean and the batteries sit the right way round.
- Look in your manual for its emergency key or power provisions, and follow only what it says.
- Find the emergency key, if your safe has one. Yale's manual asks owners not to store the override keys inside the safe. If yours is in there, you'll need help.
Don't take the keypad or lock apart. Sargent & Greenleaf says plainly that its electronic locks aren't designed to be user-serviceable, and that every applicable troubleshooting step should be tried before a safe is forcibly opened.
Wrong codes, lockouts and handle pressure
Most electronic safe locks stop accepting codes for a while after several wrong ones. It's a deliberate security feature, but it often makes people think the lock has failed:
- Sargent & Greenleaf's 6120 lock goes into lockout for fifteen minutes after four wrong codes in a row. While it's in lockout, the keypad still beeps and flashes when you press a button, but the lock won't accept the code.
- Yale's manual for its home safes says four wrong codes in a row set off an alarm for about a minute, during which the electronic lock can't open the safe.
Other makes and models use different counts and times. The right thing to do is the same for all of them: stop, wait the time your manual gives, then enter the code once, slowly and carefully. Carrying on pressing buttons during a lockout won't open the safe, and more wrong codes can start another wait.
When the lock releases but the door doesn't
Sometimes the code is accepted, or the key turns, but the handle won't budge. Sargent & Greenleaf's troubleshooting guide lists side pressure on the lock bolt as one cause. The lock bolt can be pinned by the safe's bolt-work, for example when the handle wasn't left fully in the locked position or something inside is pressing against the door. On spring-bolt locks it also mentions the bolt binding against the door frame.
- Check your manual for what it says about the handle position before and after entering the code.
- Think about whether anything inside could be pressing on the door: an overfilled shelf, a file or a gun case leaning against it.
- Don't hang your weight on the handle or kick the door. Bent bolt-work or a broken handle spindle turns a stuck safe into a much bigger repair.
What makes it worse
- Drilling, prying or levering it yourself. Safes are built to resist exactly this. DIY attempts usually damage the lock, door and bolt-work without opening the safe, and they make a controlled opening harder and dearer.
- Entering code after code. Every wrong code can extend the lockout, and you're only guessing.
- Taking the keypad or lock apart. Wires and connectors are easily damaged, and you may disturb parts that were working.
- Spraying lubricant into a keyhole or dial. Unless your maker's manual says otherwise, it can gum up a lock that only needed the right key or careful dialling.
- Following "tricks" from the internet. Videos and forum posts about other models can damage your lock and may set off relocking features that make a professional opening much more involved.
- Moving the safe. If it was bolted down, leave it. Ripping it loose damages the floor and the safe.
If the basic checks haven't worked, it's time for a professional safe opening. The technician works out what has actually failed and tries non-destructive methods first wherever the safe allows.
Firearm safes in South Africa
A gun safe that won't open needs more care than most, because the safe is part of how you meet your obligations as a licence holder. Regulation 86 of the Firearms Control Regulations says that a firearm not under its licence holder's direct personal and physical control must be stored, with its ammunition, in a safe or strong-room that meets SABS standard 953-1 and 953-2, unless the regulations provide otherwise. The same regulation sets out further rules, including exclusive access to the safe, and specifications for lock-away safes such as a way of fixing them to a wall or floor.
What that means when the safe is stuck:
- Don't damage it trying to get in. A safe that has been drilled, pried or bent may no longer be fit to use, and you'd still need somewhere compliant to keep your firearms.
- Keep your licence documents to hand. You'll be asked to show that the safe and its contents are yours.
- Plan for after it's open. A faulty lock should be repaired or replaced so the safe can go straight back into use. See safe repairs and lock changes.
We can't give legal advice. If you're unsure about storage while the safe is out of action, speak to the Designated Firearms Officer at your local police station.
Proof of ownership and what helps the technician
Opening a safe is serious. Before any work starts, you'll be asked for ID and something that shows the safe is yours or that you're authorised to have it opened: proof that links you to the home or business, a letter from your employer for an office safe, or your firearm licence documents for a gun safe. If the safe came with a house you've bought or rented, say so when you call.
These details help the technician understand the problem before arriving:
- The make and model, from a label on the door, inside the door frame or in the paperwork.
- The lock type: keypad, dial or key, or a keypad with an emergency keyhole.
- What the keypad shows or does: blank, a message on the display, how many beeps, whether a light flashes.
- Photos of the front of the safe, the keypad or dial up close, and any label or serial plate.
- What has been tried already: new batteries, how many codes, how long you waited.
- Whether the safe is bolted down, and where it is: a cupboard, a floor, an office strong-room.
- Any access arrangements at your estate, complex or office park.
We're a mobile locksmith in Sandton, so the technician comes to the safe. The call-out fee is R250, the technician quotes on site before any work starts, and payment is by EFT, cash or card. Our article on what affects the cost of a mobile locksmith explains what goes into a quote.
Questions
Will I lose what's inside if the safe has to be opened?
No. Opening a safe is about getting through the lock, not damaging the contents. If a non-destructive opening isn't possible, the technician explains the alternative and what it means for the safe before starting.
Can you just tell me the default or master code for my model?
No. We don't give out codes or opening methods. Your manual and the safe's maker are the right place for owner instructions, and anything beyond that needs a technician on site with proof of ownership.
The keypad works again after new batteries. Is it fixed?
Possibly. If the low-battery warning comes back quickly, or the keypad needs several tries, the lock or keypad may be failing. It's far easier to deal with that while the safe still opens. See safe repairs.
Need a locksmith to look at it?
If this hasn't solved the problem, our safe opening service covers it. We're a mobile locksmith in Sandton, so we come to your door.
Sources and further reading
- Firearms Control Regulations, regulation 86: safes and safe custody (Acts Online) — Firearms and ammunition to be stored in a safe or strong-room meeting SABS 953-1 and 953-2; exclusive access; lock-away safe specifications including fixing to a wall or floor
- Sargent & Greenleaf: Model 6120/6121 electronic combination lock troubleshooting guide — Batteries under the keypad; fifteen-minute lockout after four wrong codes; three beeps for time-delay mode; side pressure on the lock bolt; locks not user-serviceable; try troubleshooting before forced opening
- Yale (ASSA ABLOY): Yale Safe user manual, YSB/YSM/YLB/YLM models — Four AA batteries on the back of the door; low-battery warning; code kept when batteries change; don't store override keys inside the safe; alarm after four wrong codes; bolt the safe to a solid floor
- Sargent & Greenleaf: 8500 series mechanical safe lock installation and operating instructions — Dial locks are opened in a set sequence of turns using the opening index mark; follow the lock's own instructions