Guides
Locksmith guides: what to do when it happens
Nine practical guides for the situations people actually call us about — a door that will not open, a key snapped in a cylinder, a car with no key left, a fob that has died. Written to be useful before you call anybody, including us.
Published 14 August 2026 · G.D. Locksmith, San Diego · California Locksmith Licence #7974 · Open 24 hours, 7 days
¿Necesita un cerrajero? Llámenos al (619) 703-0328 — abierto 24 horas, todos los días.
The nine
Every guide on this site
Each one answers the question in the first sixty words, then gets into what to do, what not to do, and when it is genuinely a call-a-pro moment.
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Locked out of your house at night: what to do first
The five things to try before you call anyone, the five things that wreck a door, and what a locksmith actually does when they arrive.
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A key broke off in the lock: what to do now
How to get a protruding fragment out safely, why glue turns a five-minute extraction into a new cylinder, and how extractor tools work.
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You have lost every car key: what happens next
Where keys actually turn up, the paperwork you need, how an all-keys-lost key is originated and paired, and why a tow is often the long way round.
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Moving into a new place: rekey or replace the locks?
Who plausibly holds a key to your new place, what rekeying changes, when new hardware is the honest answer, and the full move-in checklist.
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Your car key fob has stopped working: how to diagnose it
A six-step diagnosis in order of likelihood, how to get in and start a push-to-start car with a dead fob, and how to change the battery without breaking it.
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The key turns but the door will not open
The one door-open test that separates a lock fault from a frame fault, the usual causes, and the hinge and strike fixes you can do yourself.
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How to tell if a locksmith is legitimate
How California licenses locksmiths, what the work-order law requires, and the red and green flags to check on the phone and on the doorstep.
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Locked out with the car running
What to check first, the California law on a child or animal shut in a vehicle, and why the coat hanger costs a door card and an airbag light.
Read the guide → -
Landlord and tenant lock changes in California
Deadbolt and window-lock duties under Civil Code 1941.3, the 24-hour lock change for abuse survivors, and the illegal-lockout rule in section 789.3.
Read the guide →
Where to next
The service pages behind the guides
Every guide points at the work that solves it. Here they all are in one place.
Where we work
Areas we cover across San Diego County
The guides are general; the van is not. These are the cities we actually cover.
San Diego city
- Locksmith in San Diego
- Locksmith in La Jolla
- Locksmith in Pacific Beach
- Locksmith in Point Loma
- Locksmith in Clairemont
- Locksmith in Mira Mesa
- Locksmith in Rancho Bernardo
North County
- Locksmith in Oceanside
- Locksmith in Carlsbad
- Locksmith in Vista
- Locksmith in San Marcos
- Locksmith in Escondido
- Locksmith in Encinitas
- Locksmith in Solana Beach
- Locksmith in Del Mar
- Locksmith in Poway
East County
- Locksmith in El Cajon
- Locksmith in La Mesa
- Locksmith in Santee
- Locksmith in Lakeside
- Locksmith in Alpine
- Locksmith in Spring Valley
- Locksmith in La Presa
- Locksmith in Lemon Grove
South Bay
- Locksmith in Chula Vista
- Locksmith in Otay Ranch
- Locksmith in National City
- Locksmith in Bonita
- Locksmith in Coronado
- Locksmith in Imperial Beach
If your street is not on this list, call (619) 703-0328 and we will tell you straight away whether we can get to you, before you wait on anyone else.
FAQ
About these guides
Why guides instead of a price list?
Because a price list would be a fiction. A car door is not a deadbolt, a transponder key is not a spare house key, and where you are affects how long it takes to reach you. We give you the price for your job on the phone, before any work starts.
What we can put in writing is the part that is genuinely the same for everybody: what to do, what not to do, and when a locksmith is actually needed.
Are these written for San Diego specifically?
The practical advice applies anywhere. The legal sections are California-specific and cite the actual code sections. The service details describe how we work across San Diego County — the city itself and its communities, North County, East County and the South Bay. The full list of cities is at the foot of every page.
Do I have to call you after reading one?
No. Several of these guides are written so you can fix the problem yourself — a fob battery, a dropped door, a strike plate that has wandered. If that is what happens, the guide did its job.
The rest tell you honestly when it is a call-a-pro moment and what a locksmith should actually be doing when they arrive.
Is the legal information here legal advice?
No. The California guides are general information with the code sections named so you can read them yourself. They are not legal advice and they cannot account for the facts of your situation.
For advice, speak to a lawyer, a legal aid organisation or a local tenant-landlord assistance service.
Who writes these?
G.D. Locksmith — a licensed mobile locksmith working in San Diego County, California Locksmith License number 7974, open 24 hours a day. They describe the jobs we do and the mistakes we are called out to undo.
There is no named-expert byline because we answer the phone as a company, not as a personality.
What if my problem is not on the list?
Call (619) 703-0328 and describe it. If it locks, we work on it — homes, cars, businesses, storage units and trunks — and we will tell you on the phone whether it is a job for us.
Talk to us now
Read it, tried it, still stuck? Call us.
Homes, cars and businesses, 24 hours a day, across San Diego County. You get the price before any work starts.
(619) 703-0328Open 24 hours, 7 days. California Locksmith Licence #7974.
¿Necesita un cerrajero en San Diego? Llámenos al (619) 703-0328 — abierto 24 horas.