Lost Your Keys?
We've Got You.
Fast, professional automotive locksmith services across San Antonio — car lockouts, key replacement, ignition repair, and transponder programming. Available 24/7.
San Antonio Areas & ZIP Codes We Serve
Our mobile auto locksmith units are staged across Greater San Antonio so you're never waiting long — no matter which neighborhood or ZIP code you're in.
Downtown San Antonio
ZIP 78205Full coverage across the downtown core — River Walk, Market Square, Convention Center, and every parking garage in between.
- River Walk
- Alamo Plaza
- Convention Center
North Central San Antonio
ZIP 78216Serving the Airport corridor, Loop 410 North, and neighborhoods from Dellview to Balcones Heights.
- San Antonio International Airport
- Loop 410 N
- North Star Mall
Northwest San Antonio / Alamo Ranch
ZIP 78253Rapid dispatch to Alamo Ranch, Helotes, Westover Hills, Leon Valley, and the I-10 West corridor.
- Alamo Ranch H-E-B
- Westover Hills Medical
- UTSA Campus
Stone Oak / North SA
ZIP 78258Covering Stone Oak Pkwy, Hollywood Park, Encino Park, and the far North San Antonio growth corridor.
- Stone Oak Pkwy
- Encino Park
- North Loop 1604
Medical Center Area
ZIP 78229Serving South Texas Medical Center, Babcock Road, Fredericksburg Road, and the surrounding medical campuses.
- UTHSC San Antonio
- Baptist Medical Center
- Fredericksburg Rd
South San Antonio / Brooks
ZIP 78221Mobile coverage reaching Brooks City Base, South Loop 410, and neighborhoods from Southside to Pleasanton Road.
- Brooks City Base
- South Loop 410
- Pleasanton Road
Primary ZIP Codes Served
Complete Automotive Locksmith Solutions
From emergency car lockouts to high-security transponder programming — our certified technicians handle every automotive lock and key challenge in San Antonio.
Car Key Duplication
Need a spare? We duplicate car keys on-site for virtually every make and model — from basic blade keys to transponder chip keys — fast, accurately, and affordably.
- On-site key cutting from VIN or lock
- All key types: basic, remote, smart key
- Up to 60% cheaper than dealer pricing
- Works without the original key present
Car Key Programming
Modern vehicles require transponder chips to start. We program transponder keys, key fobs, and push-to-start remotes using OEM-grade equipment — ensuring your vehicle recognizes the new key first time.
- Chip key programming for all makes
- Remote / key fob programming
- Push-button start proximity keys
- OEM-level programming equipment
Lost Car Keys
Lost all your car keys? We create replacement keys from scratch using your VIN or lock cylinder — no original needed. Faster and significantly cheaper than the dealership.
- New key from VIN or lock decode
- Works even with zero keys remaining
- All key types supported
- Available nights, weekends, and holidays
ECU and Module Programming
Expert ECU and module programming for all makes and models. We use professional OBD-II tools to program or relearn immobilizer modules, BCMs, and other vehicle control units on-site.
- ECU / immobilizer programming
- BCM and module relearn procedures
- OBD-II professional-grade equipment
- Most jobs completed same-day
Ignition Repair
Key stuck in the ignition? Ignition cylinder worn out? We diagnose and repair ignition problems on-site, replacing cylinders and extracting broken keys without needing a full engine teardown.
- Broken key extraction from ignition
- Ignition cylinder rekey or replacement
- Diagnose ignition switch failures
- Most repairs completed same-day
FAQs
Have questions about car key replacement, lockouts, or programming costs? Browse our frequently asked questions for clear, honest answers about our auto locksmith services.
- Pricing and cost estimates
- What to do when locked out
- Transponder vs. standard keys
- Dealer vs. locksmith comparison
TX DPS Licensed
Serving All of San Antonio
15+
Years Serving San Antonio
30 Min
Avg. Response Time
10,000+
Customers Served
4.9★
Average Google Rating
San Antonio's Most Trusted Auto Locksmith
3H Auto Lock & Key is locally owned and operated in San Antonio. Our technicians know every neighborhood, every major road, and the fastest routes to reach you — so you're never waiting long.
Every job comes with a licensed technician who carries their TX DPS credentials on every call. We never subcontract to untrained third parties, and our trucks are stocked with professional-grade equipment for everything from basic lockouts to advanced transponder programming.
100% Satisfaction Guarantee
Every job is backed by our satisfaction guarantee. If you're not completely satisfied, we'll make it right — no questions asked.
Landmarks & Neighborhoods We Serve
Our technicians know San Antonio's streets, shortcuts, and landmarks. When you call, you'll speak to someone who knows exactly where you are and how to get there fast.
River Walk / Downtown Core
One of our most frequent call zones. Tourists and locals locked out near River Walk hotels, parking garages, and restaurants get rapid response.
San Antonio International Airport
Arriving or departing? If you're locked out in airport parking, we're close by and know exactly how to navigate airport access quickly.
South Texas Medical Center
Doctors, nurses, and patients needing a locksmith near the UTHSC, Baptist, or Methodist campuses — we respond fast, even during shift changes.
Alamo Ranch / Loop 1604 NW
Our northwest units cover Alamo Ranch Pkwy, the H-E-B, Regal Cinema, and surrounding neighborhoods in ZIP 78253 within 20–30 minutes.
Stone Oak Parkway
Business owners and residents along Stone Oak Pkwy, Encino Park, and Hollywood Park can count on a fast, professional dispatch.
North Star Mall Area
Locked out while shopping? We cover North Star Mall and the surrounding Loop 410 North commercial corridor all day, every day.
Brooks City Base
Serving the Brooks development and South San Antonio residential neighborhoods along US-281 South and Pleasanton Road.
UTSA Campus Corridor
Students, faculty, and staff near UTSA, Loop 1604 and I-10 West get rapid auto locksmith response from our nearby northwest units.
Fort Sam Houston / JBSA
Military personnel and civilians near Joint Base San Antonio facilities — we understand base access protocols and respond professionally.
The Pearl / Museum Reach
Covering the Pearl District, Brewery District, and Museum Reach neighborhoods with fast downtown-area response times.
Ingram Park Mall Area
Shoppers and businesses at Ingram Park Mall and the Babcock Road commercial corridor get same reliable coverage.
Lackland AFB / Kelly Field
Civilian and dependent vehicle lockouts near Lackland AFB and the Kelly Field development are part of our everyday service zone.
Why San Antonio Drivers Choose 3H Auto Lock & Key
There are many locksmiths in San Antonio. Here's why drivers across the city trust 3H for every lockout, key replacement, and ignition repair.
30-Minute Response Across San Antonio
Our GPS-tracked mobile units are staged throughout San Antonio. When you call, the nearest licensed technician heads your way immediately — most calls across Bexar County see a 20–30 minute arrival.
Texas DPS Licensed & NASTF Registered
Every technician carries a valid Texas DPS locksmith license and is NASTF-registered for automotive key access. Background-checked, uniformed, and covered by our full liability policy.
Upfront, Transparent Pricing
We quote a firm price before we touch anything — no after-hours bait-and-switch, no hidden fees. Whether it's a lockout or transponder programming, you know the exact cost before we start.
Fully Stocked Mobile Units
Our vans carry professional key-cutting machines, OBD-II transponder programmers, and lock hardware for virtually every make and model. Most San Antonio jobs are resolved on the very first visit.
True San Antonio Locals
We're not a national referral service — we're San Antonio locals. Our techs know every neighborhood, shortcut, and landmark across the city, so we navigate faster and arrive 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, every single time.
Available 24/7 across all San Antonio ZIP codes and surrounding Greater San Antonio communities. One call gets a licensed automotive locksmith on the way.
Call Now — (210) 966-8114Trusted by San Antonio Drivers
Real reviews from customers across San Antonio, Alamo Ranch, Stone Oak, Medical Center, and surrounding areas who needed fast, reliable auto locksmith service.
Auto Locksmith FAQ
Everything you need to know about car lockouts, key replacement, and automotive locksmith services in San Antonio.
Have a question not answered here? Call our San Antonio auto locksmith team — we're available 24/7. You can also browse our full FAQ page.
Nearby Service Areas
Our auto locksmith coverage extends well beyond San Antonio proper. Explore the surrounding service areas we cover across Greater San Antonio and South Central Texas.
San Antonio (All Areas)
All SA Zip CodesFull-service auto locksmith coverage across all San Antonio neighborhoods and Bexar County ZIP codes.
Alamo Ranch
NW San Antonio · 78253Dedicated coverage for Alamo Ranch, Helotes, Westover Hills, Leon Valley, and the I-10 West corridor.
Stone Oak
North SA · 78258Rapid response to Stone Oak, Hollywood Park, Encino Park, and the far North San Antonio corridor.
Medical Center Area
Medical Center · 78229Serving South Texas Medical Center, Babcock Road, Fredericksburg Road, and all surrounding medical campuses.
Castroville, TX
Medina County · 78009We extend auto locksmith service to Castroville and surrounding Medina County communities west of San Antonio.
Hondo, TX
US-90 West · 78861Covering Hondo and nearby communities along US-90 West for automotive and residential locksmith needs.
Need an Auto Locksmith Right Now?
Don't wait — our certified automotive locksmiths are ready to dispatch to your location across San Antonio and surrounding areas. Fast response, upfront pricing, no surprises.
Average 30-minute response · TX DPS Licensed technicians · Upfront pricing
3H Auto Lock & Key — San Antonio Auto Locksmith Service Area
Mobile auto locksmith coverage across Greater San Antonio & surrounding communities