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Lexus Automotive Locksmith San Antonio

S.A. Locksmith & Security is a licensed, insured, and locally owned automotive locksmith serving San Antonio, Texas and surrounding areas including Alamo Heights, Stone Oak, The Dominion, Helotes, Converse, Schertz, Cibolo, New Braunfels, and Boerne. We specialize in Lexus key replacement, key fob programming, smart key service, and ECU module services for every Lexus model on the road today. Whether you need a spare key, lost all your keys, or need emergency lockout assistance, our mobile locksmiths come to you — home, office, or roadside — 24 hours a day, 7 days a week. We use professional Toyota Techstream and professional immobilizer programming tools to program keys at a fraction of dealer cost. Call (210) 348-3677 for fast, affordable Lexus locksmith service in San Antonio.

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.

Lexus Key & Key Fob Replacement San Antonio

S.A. Locksmith & Security is your trusted source for Lexus key replacement services in San Antonio. We service all Lexus models from classic LS 400 and SC 300 to modern RX, NX, and LC luxury vehicles. Our certified automotive locksmiths provide fast, professional key cutting, smart key fob programming, transponder key services, and emergency lockout assistance. Whether your Lexus uses a classic TOY38R metal key, a 4C/4D transponder key, or a modern Smart Access System fob, we have the expertise and equipment to help.

Lexus Key & Fob Services

Lexus ECU & Module Services

Lexus vehicles use Denso ECU/ECM systems across their lineup, including the Denso EFI ECM (IS, ES, GS, LS series), Denso Atkinson Cycle EFI + HV ECU (hybrid models like CT 200h, ES 300h, RX 450h), and Denso Direct Injection ECM (newer turbo and V6 models). Security systems include the Lexus Smart Access System with Toyota G-Chip (2004-2012), H-Chip (2013-2019), and BA/BF/BG-Chip (2020+), as well as earlier Texas Instruments 4C/4D transponder-based immobilizers. S.A. Locksmith & Security offers comprehensive ECU and module services for all Lexus models.

Key Reflash Service: Older Lexus models (late 1990s–early 2000s) with 4C/4D transponder systems may require an ECU key reflash when all keys are lost, the ECU is replaced, or the immobilizer loses programming. S.A. Locksmith & Security performs on-site Lexus key reflash and immobilizer recovery — no towing to the dealer required. Call (210) 348-3677 for same-day reflash service.

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Lexus Key Replacement FAQ

The cost varies depending on the key type. Standard transponder keys range from $150-$300, while smart key fobs range from $250-$500. Contact S.A. Locksmith & Security at (210) 348-3677 for an exact quote for your Lexus .
Yes! S.A. Locksmith & Security specializes in all-keys-lost situations for Lexus vehicles. We have the equipment to program new keys from scratch. We handle the transponder key or smart key system in your Lexus .
Most Lexus key programming takes 30-60 minutes. Smart key or all-keys-lost situations may take 1-2 hours depending on the advanced immobilizer system. Our mobile technicians come to you.
Absolutely. S.A. Locksmith & Security saves you 40-60% vs Lexus dealership pricing. We come to you — no towing costs. Same OEM-quality key blanks and professional programming equipment.
S.A. Locksmith & Security provides mobile Lexus key services throughout San Antonio, New Braunfels, Schertz, Cibolo, and all surrounding areas. 24/7 emergency service. Call (210) 348-3677.

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 Lexus Key Replacement in San Antonio?

S.A. Locksmith & Security provides professional Lexus key replacement, smart key fob programming, and emergency lockout services for all models. Fast, reliable, affordable.

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.

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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.