Smart Key Replacement| S.A. Locksmith & Security

Smart Key Replacement in San Antonio

Smart Automotive Locksmith San Antonio

S.A. Locksmith & Security is a licensed, insured, and locally operated mobile locksmith providing professional Smart key replacement services in San Antonio, Texas and surrounding areas including Alamo Heights, Stone Oak, Helotes, Boerne, Leon Valley, and surrounding areas. Available 24/7 for emergencies. Call (210) 348-3677 for a free quote.

Licensed (LIC# B18010), insured, and BBB A+ rated, S.A. Locksmith & Security has been serving San Antonio since 2009. We back all work with a 90-day warranty on parts and labor plus manufacturer warranty on all hardware. Our no-damage guarantee means your vehicle is always safe in our hands. With response times under 20 minutes throughout San Antonio, we’re your fastest alternative to the dealership — at a fraction of the cost.

Smart Models We Service

Smart Key Services in San Antonio

Smart ECU & Module Services

Smart vehicles use Mercedes-Benz derived ECU systems including Bosch ME17.9.20 (0.9L Turbo / 1.0L models) and Bosch EDC16C32/EDG16C33 (diesel models). The immobilizer system is the Mercedes-based EIS (Electronic Ignition Switch) / EZS (Elektronisches Zündschloss) with infrared and transponder authentication. S.A. Locksmith & Security offers ECU and module services for all Smart models.

ECU / PCM Cloning & Programming
Immobilizer Reset & Reflash
Key-to-ECU Synchronization
VIN Programming & Module Initialization
BCM (Body Control Module) Programming
Instrument Cluster / Airbag Module Service
ECU / ECM / DME Cloning & Programming
TCM (Transmission Control Module) Cloning & Programming
Instrument Cluster Repair & Programming
Airbag Module (SRS) Crash Data Reset
Gateway Module Programming
Immobilizer Service & IMMO Reset
ABS / ESC Module Service & Programming

Our Services

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Frequently Asked Questions - Smart Key Replacement

How much does Smart key replacement cost in San Antonio?

Smart key replacement costs vary by model, year, and key type. Call S.A. Locksmith & Security at (210) 348-3677 for a free quote.

Which Smart models do you service?

We service all Smart models. See our model list above for specific models and years covered.

Can you make a Smart key with all keys lost?

Yes, we handle all-keys-lost situations for all Smart models with professional diagnostic equipment.

How long does Smart key replacement take?

Most Smart key replacements are completed in 20-45 minutes on-site with our mobile service.

Is a locksmith cheaper than the Smart dealer?

Yes, typically 30-50% less than dealer pricing with faster same-day mobile service.

Note: Pricing and availability may vary. Smart key programming requires professional equipment. Some services may require vehicle VIN verification. All work is backed by our 90-day warranty on parts and labor and manufacturer warranty on hardware. S.A. Locksmith & Security — Licensed (LIC# B18010), Insured, BBB Accredited (A+ Rating). 11401 West Ave, San Antonio, TX 78213. All brand names, logos, and trademarks are the property of their respective owners. S.A. Locksmith & Security is an independent locksmith service provider and is not affiliated with any automobile manufacturer or dealership. 10% Military & Veteran Discount — show valid military ID at time of service.

Need Smart Key & Key Fob Replacement in San Antonio?

Contact S.A. Locksmith & Security today for professional Smart key services at a fraction of dealership pricing. Same-day mobile service available 24/7.

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

Disclaimer: S.A. Locksmith & Security is an independent locksmith service provider. Brand names and trademarks are the property of their respective owners. Pricing varies based on service complexity, time of day, and parts required. Call (210) 348-3677 for a detailed quote. Licensed & insured — TX DPS License #B18010.

Need Professional Locksmith Service?

S.A. Locksmith & Security provides fast, reliable locksmith services across San Antonio and surrounding areas. Available 24/7 for emergencies.