Car Key Programming San Antonio

Car Key Programming Locksmith San Antonio

S.A. Locksmith & Security provides professional car key programming in San Antonio, Texas and surrounding areas including Alamo Heights, Stone Oak, The Dominion, Helotes, Converse, Schertz, Cibolo, New Braunfels, and Boerne. Need a key programmed to your vehicle’s immobilizer? We program transponder keys, smart keys, key fobs, and proximity remotes for all makes and models — including all-keys-lost situations. Mobile service at 30-50% less than the dealer. Call (210) 348-3677.

What We Do

Car key programming is the process of synchronizing a key’s electronic chip with your vehicle’s immobilizer or Body Control Module (BCM). Without proper programming, a new key will turn the ignition but the engine won’t start. S.A. Locksmith & Security programs all key types: transponder chip keys (4C, 4D, 46, 48, ID49, Megamos AES), smart proximity keys, remote head keys, and key fobs. We handle every immobilizer system: Ford PATS, GM Passlock/PK3+/PK3++, Toyota G-chip/H-chip, Honda/Acura HITAG, Nissan BCM, BMW CAS/FEM/BDC, Mercedes EIS/EZS, Audi/VW IMMO3/IMMO4/MQB, Hyundai/Kia PIN-code and smartkey, and all others. Our tools include Autel IM608 Pro II, VVDI Key Tool Max, SmartPro SP-1000, AutoProPAD G2, and Toyota Techstream.

How It Works

Step 1: Vehicle Assessment — Call (210) 348-3677 — we determine your vehicle's immobilizer type and the programming procedure required.
Step 2: Key Preparation — We cut the mechanical key blade (if applicable) and prepare the correct transponder chip or smart fob.
Step 3: Immobilizer Programming — Using professional diagnostic tools, we register the new key with your vehicle's immobilizer/BCM so the engine recognizes it.
Step 4: Full Function Test — We verify the key starts the engine, all remote functions work, and the immobilizer accepts the key consistently.

Vehicles We Service

All vehicles with immobilizer systems (1996+): Ford, Chevrolet, GMC, Toyota, Honda, Nissan, Hyundai, Kia, BMW, Mercedes-Benz, Audi, Volkswagen, Lexus, Subaru, Mazda, Jeep, Dodge, Chrysler, Ram, Cadillac, Buick, Lincoln, Jaguar, Land Rover, Porsche, Volvo, Mini, Mitsubishi, Infiniti, Acura, and more.

Why Choose S.A. Locksmith & Security?

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Frequently Asked Questions

How much does car key programming cost?

Car key programming typically costs $80-$300 depending on the vehicle and immobilizer type. All-keys-lost situations cost more. Call (210) 348-3677.

What is car key programming?

Car key programming synchronizes a new key’s electronic chip with your vehicle’s immobilizer computer. Without programming, the key will physically turn but the engine won’t start.

Can you program a key if I lost all my keys?

Yes. We specialize in all-keys-lost (AKL) programming. We read the immobilizer data and register a completely new key from scratch.

Do I need programming if I just want a copy of my key?

If your car has an immobilizer (most 1998+ vehicles), yes — the new key’s chip must be programmed even for a simple spare.

Can you program keys at my location?

Yes. We are a fully mobile locksmith and perform all key programming at your home, work, or roadside location.

Request a Locksmith

S.A. Locksmith & Security is a full-service, 24/7 locksmith located in San Antonio serving the greater SA area. No project is too big or too small.

📞 (210) 348-3677

We Accept All Major Credit Cards

S.A. Locksmith & Security — Licensed (LIC# B18010), Insured, BBB A+ Accredited. Serving San Antonio since 2009 with a 90-day warranty on all work. No-damage guarantee. Average response time under 20 minutes. 10% Military & Veteran Discount — show valid military ID at time of service.

Need Car Key Programming in San Antonio?

Contact S.A. Locksmith & Security for professional service. Licensed, insured, and available 24/7.