Locked Out in
San Antonio?
Fast, mobile auto locksmith services across all San Antonio neighborhoods — car lockouts, key programming, ignition repair, and more. Available 24/7.
San Antonio Service Areas & Zip Codes
We cover all four quadrants of San Antonio and surrounding Bexar County communities. Find your neighborhood below.
North San Antonio
Serving the growing suburbs and established neighborhoods of North SA — from Stone Oak to Alamo Ranch.
Neighborhoods & Communities
Zip Codes Served
West San Antonio
Covering West Side communities including military-adjacent neighborhoods and historic districts.
Neighborhoods & Communities
Zip Codes Served
East San Antonio
Reaching East SA residents and businesses from downtown outskirts to Converse and Universal City.
Neighborhoods & Communities
Zip Codes Served
South San Antonio
Providing prompt locksmith services to South SA neighborhoods and communities near Brooks City Base.
Neighborhoods & Communities
Zip Codes Served
Also serving Downtown San Antonio, Alamo Heights, Terrell Hills, and all surrounding Bexar County communities. Call us if you don't see your area listed.
Lock & Key Services Across San Antonio
From automotive and residential to commercial and emergency services — 3H Auto Lock & Key covers every lock and key need in San Antonio.
Automotive Locksmith
Locked out of your car anywhere in San Antonio? We serve all quadrants — North, South, East, and West SA — with fast automotive lockout response.
- Car lockout assistance
- Transponder key programming
- Ignition repair & replacement
- Duplicate car keys cut on-site
- Smart key & fob programming
Residential Locksmith
Home security solutions for San Antonio homeowners from Stone Oak to South Park. We handle everything from lockouts to full rekeying projects.
- Home lockout service
- Lock rekey & replacement
- Deadbolt installation
- High-security lock upgrades
- Master key systems
Commercial Locksmith
Protecting San Antonio businesses with enterprise-grade lock solutions. Serving offices, retail, warehouses, and commercial complexes across Bexar County.
- Commercial lockouts
- Access control systems
- Panic bar installation
- Master key systems
- File cabinet & safe locks
Car Key Duplication
On-site car key duplication for all makes and models — residential, commercial, and automotive. We come to you anywhere in San Antonio with our fully equipped mobile unit.
- High-security key duplication
- Laser-cut keys
- Transponder key cutting
- Antique & specialty keys
- Bulk key duplication
Car Key Programming
Professional transponder and smart key programming for all vehicle makes and models across San Antonio. We program keys on-site — no dealership trip needed.
- Transponder key programming
- Smart key & push-to-start fobs
- Remote programming
- All makes & models
- On-site mobile service
Lost Car Keys
Lost your only car key? Our San Antonio team can cut and program a replacement on-site — no tow to the dealership required. Available 24/7.
- Replacement key cutting
- Transponder reprogramming
- Smart key replacement
- All makes & models
- 24/7 emergency service
ECU & Module Programming
Expert ECU and module programming for San Antonio drivers. We diagnose and program engine control units and security modules to get you back on the road.
- ECU programming & cloning
- Immobilizer module reset
- TPMS programming
- Airbag module reset
- All vehicle platforms
Ignition Repair
Worn, stiff, or broken ignition? Our San Antonio technicians repair and replace ignition cylinders for all vehicle makes and models — on-site, fast.
- Ignition cylinder repair
- Ignition replacement
- Key extraction from ignition
- Ignition rekeying
- All makes & models
FAQs
Have questions about our San Antonio locksmith services? Browse our comprehensive FAQ page covering car keys, programming, pricing, and more.
- Car key questions answered
- Pricing transparency
- Service area details
- Emergency service info
- Programming FAQ
San Antonio's Most Trusted Locksmith
3H Auto Lock & Key was founded right here in San Antonio. For over 15 years, we've built our reputation one job at a time — earning the trust of homeowners, businesses, and drivers across all of Bexar County.
Our technicians are locally trained, background-checked, and deeply familiar with every neighborhood in San Antonio. We know the fastest routes to every quadrant — which means faster response times for you.
15+
Years in San Antonio
30 Min
Average Response Time
10,000+
SA Customers Served
4.9★
Average Google Rating
Texas DPS Licensed Locksmith
Every 3H technician holds a valid Texas Department of Public Safety locksmith license — the state's required credential for all practicing locksmiths in Bexar County.
Fully Bonded & Insured
We carry comprehensive liability insurance and bonding covering all of San Antonio and Bexar County. Every service call is protected — for you and for us.
BBB Accredited — A+ Rating
3H Auto Lock & Key is a Better Business Bureau accredited business with an A+ rating, reflecting our track record of resolving every customer concern professionally.
Background-Checked Technicians
All our San Antonio technicians pass thorough background checks before joining the team. We're uniformed, identifiable, and accountable on every service call.
100% Satisfaction Guarantee
Every job is backed by our satisfaction guarantee. If you're not happy, we'll make it right — no questions asked. That's the 3H promise to every San Antonio customer.
Locksmith Services Near San Antonio's Top Landmarks & Neighborhoods
From the Alamo and the River Walk to Stone Oak and Helotes — 3H Auto Lock & Key knows every street, shortcut, and neighborhood in San Antonio. That local knowledge means faster response times for you.
The Alamo
Downtown Historic DistrictLocked out near the heart of downtown? We dispatch to the River Walk corridor and surrounding streets within minutes. Whether you're a visitor or local, we've got you covered.
Pearl District
Near MidtownSan Antonio's hottest urban neighborhood. We regularly serve residents and restaurant staff in the Pearl and Broadway corridor — fast, discreet service every time.
Stone Oak
North San AntonioOne of our busiest service corridors. Families, professionals, and businesses in Stone Oak and the HWY 281 North corridor can count on a 30-minute response.
Alamo Ranch
Northwest San AntonioServing the Alamo Ranch retail and residential community, including the Loop 1604 corridor. Car lockouts at the shopping center? We're on our way.
Six Flags Fiesta Texas
Northwest Loop 1604Locked out at the theme park parking lot? It happens more than you'd think. We serve the Six Flags area and the entire northwest Loop corridor.
San Antonio International Airport
North Central SANeed emergency locksmith service near SAT Airport? Our north-central units cover the airport area — hotel, parking garage, or rental car lot.
Fort Sam Houston
Northeast San AntonioServing military families and personnel near Fort Sam Houston and Randolph AFB. We understand the urgency — licensed, background-checked technicians only.
Medical Center District
Northwest San AntonioThe South Texas Medical Center sees round-the-clock activity — and so do we. Hospital workers, patients, and visitors locked out in the Medical Center get priority dispatch.
Brooks City Base
South San AntonioCovering the growing mixed-use community at Brooks and all South Side neighborhoods. Residential, automotive, and commercial locksmith services available same-day.
King William Historic District
SouthtownSan Antonio's beautiful Victorian neighborhood. Our technicians handle historic homes with care, using non-destructive entry methods to protect original hardware.
Helotes
Far Northwest Bexar CountyDon't let the drive fool you — we serve Helotes and Old Town Helotes regularly with the same fast response times as central San Antonio.
Converse & Universal City
East Bexar CountySuburbs east of the city that we serve daily. Whether it's a car lockout off I-10 East or a residential rekey in Converse, our east-side units are nearby.
Local to San Antonio Since Day One
We're not a national call center dispatching strangers. Every 3H technician lives and works in the San Antonio area. We know that I-35 North backs up near Bitters Road, that Loop 1604 construction affects West SA response times, and exactly how to navigate the River Walk's one-way streets. That local expertise means we arrive faster and serve you better than any out-of-town company.
Why San Antonio Chooses 3H Auto Lock & Key
There are dozens of locksmiths in Bexar County. Here's why thousands of San Antonio residents, businesses, and drivers choose 3H every single time.
30-Minute Average Response
We operate GPS-tracked mobile units staged throughout San Antonio — North Side, South Side, East and West. When you call, the nearest tech heads your way immediately.
Texas DPS Licensed & Insured
Every technician carries a valid Texas Department of Public Safety locksmith license, has passed a background check, and is covered by our comprehensive liability policy.
Upfront, Honest Pricing
We quote you a price before we start — no hidden fees, no after-hours surprises. Residential lockouts, car key programming, or a commercial rekey: you'll know the cost upfront.
Fully Equipped Mobile Units
Our vans carry professional-grade key cutting machines, transponder programmers, and lock hardware for virtually every make and model — so we resolve most jobs on the first visit.
True Local Expertise
We're San Antonio locals, not a national referral service. Our techs know every neighborhood from Helotes to Converse, so we navigate faster and get to you sooner.
Satisfaction Guaranteed
If you're not 100% satisfied with our work, we come back and make it right — no questions asked. That's the 3H promise to every San Antonio customer.
Available 24/7 across all San Antonio and Bexar County. One call gets a licensed locksmith on the way to your exact location.
Call Now — (210) 966-8114What San Antonio Customers Say
Real reviews from drivers and residents across all San Antonio neighborhoods and Bexar County.
San Antonio Locksmith FAQ
Answers to the most frequently asked questions about our locksmith services in San Antonio and Bexar County.
Have a question not answered here? Call our San Antonio team — we're available 24/7. You can also visit our full FAQ page for more answers.
Nearby Service Areas
Beyond San Antonio proper, 3H Auto Lock & Key covers these surrounding communities and suburban corridors — all with the same fast response and upfront pricing.
Alamo Ranch
ZIP: 78253
Fast-growing master-planned community on San Antonio's far West Side. We cover all Alamo Ranch neighborhoods and surrounding ZIP codes.
Call (210) 966-8114Stone Oak
ZIP: 78258
Affluent North Side community with luxury homes and busy retail corridors. Full locksmith coverage including smart locks and transponder keys.
Call (210) 966-8114Medical Center Area
ZIP: 78229
Home to South Texas Medical Center complex. We serve hospitals, clinics, businesses, and residents throughout this high-traffic zone.
Call (210) 966-8114Castroville
ZIP: 78009
Historic Alsatian settlement 25 miles west of downtown San Antonio. We cover Castroville and surrounding Medina County communities.
Call (210) 966-8114Hondo
ZIP: 78861
County seat of Medina County, about 40 miles west of San Antonio. We dispatch to Hondo for auto locksmith and emergency lockout services.
Call (210) 966-8114Greater San Antonio
ZIP: All Zones
We cover the entire Greater San Antonio metro — all zip codes, neighborhoods, and dispatch zones. Call to confirm coverage for your location.
Call (210) 966-8114Not sure if we cover your location?
Call us — we'll confirm coverage and dispatch time before sending a technician.
Locked Out Anywhere in San Antonio?
Our team is on standby 24/7, dispatching from multiple locations across San Antonio for the fastest possible response to your neighborhood.
Not sure if your location is covered? Just call and we'll confirm in 30 seconds.
3H Auto Lock & Key — San Antonio Coverage Map
Serving all San Antonio neighborhoods and Bexar County 24/7