Reliable Power for Every Start

From dead batteries to dim lights, we diagnose and repair all vehicle electrical issues. Our technicians restore dependable power with precision testing, quality parts, and digital transparency.

Restore Confidence with Reliable Auto Electric Service in San Antonio, TX

When your car won’t start or electrical systems begin to fail, frustration quickly sets in. Faulty wiring, a weak battery, or a worn alternator can cause lights to dim, gauges to flicker, or complete engine shutdowns. Without proper diagnosis, small electrical problems can leave you stranded at the worst time.

At Finsanto Automotive, we specialize in precise auto electric service in San Antonio, TX, backed by transparency, technology, and trust. Whether you need alternator replacement, ignition coil replacement, or car battery replacement service, our ASE-certified team pinpoints the problem and fixes it right the first time. Using digital vehicle inspections, we show you exactly what we find; no hidden issues, no guesswork.

We understand your vehicle’s electrical system is its heartbeat. That’s why we only use high-quality parts and proven testing methods. With over a decade of experience and a 3-Year/36,000-mile nationwide warranty, Finsanto Automotive keeps your vehicle powered and dependable, mile after mile.

Precision Diagnostics for Lasting Electrical Performance

Modern vehicles rely on complex electrical systems that control everything from ignition to safety features. When something goes wrong, you need a trusted shop that understands how to locate and repair the root cause, not just the symptoms. Our auto electric service provides exactly that.

We handle everything from alternator replacement and auto electrical repair to advanced diagnostics for starting, charging, and lighting systems. Our team uses digital tools to test voltage, current, and resistance across all circuits, ensuring accurate results every time.

Our key services include:

• Battery Testing & Replacement: We test battery life, charging rate, and load performance before replacing with high-quality units.
• Alternator Replacement: Ensures consistent charging and prevents stalling, dimming lights, or dead batteries.
• Ignition Coil Replacement: Restores strong spark and smooth engine performance by repairing worn or damaged coils.
• Auto Electrical Repair: Covers fuses, relays, and circuit issues that cause intermittent power loss.
• Car Battery Replacement Service: Includes recycling of old batteries and proper fitment for your vehicle’s specs.

We also diagnose hybrid and EV auxiliary systems, using updated equipment for modern electrical systems. Every step of our process is documented through our digital vehicle inspection, so you see photos, notes, and recommendations in real time.

Our commitment to integrity means we never replace parts unnecessarily. We fix only what’s needed and explain exactly why, because electrical service should build confidence, not confusion.

Power, Reliability, and Transparency You Can Count On

Electrical problems don’t have to be complicated. At Finsanto Automotive, we make them simple by combining reliable diagnostics with honest communication. Whether it’s a car battery replacement service or a full auto electrical repair, you’ll always know what’s wrong, how we’re fixing it, and how it benefits your vehicle.

Our ASE-certified technicians treat every car like their own, performing each repair with precision and care. We test, verify, and double-check every circuit to ensure the issue is fully resolved before you leave the shop. From your starter to your sensors, every connection matters, and we make sure it’s done right.

We’re proud to be the auto repair shop in San Antonio, TX known for doing what’s right, not what’s easy. Our transparent reports, digital inspections, and reliable parts help keep your vehicle running smoothly and safely. When electrical issues strike, you can depend on us to bring your car’s power, and your confidence, back to life.