The keypad is dead, beeping, or refusing the code
Four causes out of five are electrical, and three of them you fix without tools. Work down this page in order — each step rules something out, which is what a technician would charge you to do anyway.
- Listen to what the lock is telling you Electronic locks report their state in beeps. On a Sargent & Greenleaf 6120, twenty consecutive beeps after the last digit and # means the batteries are done. A changed pitch of the sounder is that lock's low-battery warning. On a LaGard Basic, repeated LED flashing with beeping means the same thing — and the lock may still give the correct-code double beep while having too little power to actually move the bolt.
- Replace the batteries — with fresh alkaline, not rechargeables Use new alkaline cells of the right count: the S&G 6120 takes two 9-volt, the LaGard Basic takes one. Rechargeable 9 V cells sit at a lower voltage and cause exactly the symptom you are trying to fix. Manufacturers advise replacing batteries once a year whether or not they are flat.
- If the battery is inside the door, power the keypad from outside Some keypads expose two contacts on their face. Holding a fresh 9 V battery against them powers the lock long enough to open the door and reach the internal battery box. Your programming is not lost: these locks keep the combination in non-volatile memory, so removing power does not reset anything.
- If the keypad ignores you entirely, wait After several wrong codes most electronic locks enter a penalty lockout. During it the keypad may beep and refuse input — or look completely dead even on new batteries. Wait the full penalty period without pressing anything; each new attempt can restart the timer.
- Try the code slowly, once Worn keypads misread fast presses. Press each digit deliberately, listen for the tone of each key, and do not rush the final #. If one specific digit never sounds, the keypad — not the lock — is the failed part, and a keypad is a cheap replacement a technician can do on site.
- Consider the factory code — only if nobody ever changed it Locks ship with a factory master code: 1 2 3 4 5 6 # on the S&G 6120, 123456 on LaGard units. On a safe that was never programmed after installation — common on inherited and second-hand safes — this is worth one attempt. One. Then stop, or you will trigger the penalty lockout.
…the lock sounds correct and the handle still will not move (that is boltwork, not the lock), the safe was struck, pried or drilled (the relocker has probably fired), or the lock has been intermittent for weeks. Intermittent electronics are a failing lock, and a failing lock left in service eventually fails closed — which costs several times more to open than replacing it now.
Symptoms, decoded
Nothing at all: no beep, no light
Flat battery, disconnected battery lead, or a keypad whose cable has been pinched behind the door skin. Check the battery first, then whether the compartment cover was refitted with the wires trapped — a very common outcome after a previous battery change.
Beeps on every key, but the code never works
Power is reaching the keypad, so the battery is probably fine. Either the code is wrong, the lock is in penalty lockout, or the connection between keypad and lock body has failed. Wait out the lockout, then try once more, slowly.
Correct-code sound, but the bolt does not retract
Classic marginal battery: enough current for the electronics, not enough for the solenoid or motor. Fresh alkaline cells fix it. If it persists on new batteries, the lock's motor or solenoid is failing.
Long low beeps or “braps” after entry
Model-specific error signalling. On S&G units this is documented in the troubleshooting guide for that lock — find your lock on the lock library page and read the maker's own table rather than guessing.
Worked yesterday, dead today, no warning
Suspect the battery even so — cold weather drops voltage sharply, and a safe in a garage or basement will fail first on the coldest morning of the year.