# Zentech Automotive > Expert mobile automotive electrical service — starter, alternator, and battery replacement. We come to you. No tow truck required. Serving Austin/Round Rock, TX and Colorado Springs, CO. Zentech Automotive is a veteran-owned mobile mechanic service specializing **exclusively** in automotive electrical repair. A technician drives to the customer's exact location — home driveway, office parking lot, apartment complex, parking garage, roadside — and performs the repair on-site. We do not operate a physical shop. Formerly operated as **Mobile Auto Clinic** (950+ Google reviews, 4.8-star rating). Led by a veteran mechanic with decades of experience in electrical and computerized automotive diagnostics. Franchise expansion in progress. ## Why Mobile Service Matters - Standard flatbed tow trucks **cannot enter multi-level parking garages** — Zentech can, because we drive a standard vehicle - Service is **fluid-free and mess-free** — no oil, coolant, or transmission fluid involved - Most repairs completed in **under one hour** on-site - Eliminates the tow + shop wait cycle that can take 2–3 days --- ## Locations ### Austin / Round Rock, Texas - **URL:** https://zentechautomotive.com/austin - **Phone:** (512) 598-5658 - **Primary service cities:** Austin (all zip codes), Round Rock, Cedar Park, Lakeway, Georgetown, Pflugerville, Leander, Bee Cave - **Extended zone** (additional service call fee): Kyle, Buda, San Marcos, Bastrop, Lockhart, Taylor, Marble Falls - **Key zip codes:** 78664–78683 (Round Rock), 78701–78759 (Austin), 78613 (Cedar Park), 78641–78646 (Leander), 78626–78633 (Georgetown), 78660–78691 (Pflugerville), 78738/78734/78733 (Lakeway/Bee Cave) ### Colorado Springs, Colorado - **URL:** https://zentechautomotive.com/colorado-springs - **Primary service cities:** Colorado Springs (all zip codes), Fountain, Security-Widefield, Manitou Springs, Briargate - **Extended zone** (additional service call fee): Pueblo, Castle Rock, Monument, Woodland Park, Cañon City - **Key zip codes:** 80903–80929 (Colorado Springs), 80817 (Fountain), 80911 (Security-Widefield), 80829 (Manitou Springs) --- ## Services ### Battery Replacement Mobile car battery testing and replacement. We test cold cranking amps (CCA), internal resistance, and state of charge. Replace with OEM-equivalent or upgrade battery. Post-install charging system verification included. All makes and models. **Signs a battery needs replacement:** slow cranking, clicking on start, lights dimming, battery warning light, battery older than 3–5 years, fails in extreme temperatures. ### Starter Replacement On-site starter motor diagnosis and replacement. We confirm starter failure via electrical testing (voltage drop, amperage draw) before replacing. Most starter replacements completed in 1–2 hours at the customer's location. **Signs of a bad starter:** single loud click on key turn, repeated rapid clicking, grinding noise on start, starter spins but doesn't engage engine, intermittent no-start. ### Alternator Replacement Mobile alternator testing and replacement with full charging system diagnostic. We verify the alternator is the root cause — not a wiring fault, blown fusible link, or bad ground — before replacement. Post-install charging output verification (13.5–14.7V) included. **Signs of a failing alternator:** battery warning light, flickering lights, whining or grinding noise from engine, battery dies while driving, burning rubber smell, multiple electrical accessories failing simultaneously. ### No-Start Diagnostics Advanced electrical diagnostic for vehicles that won't start. Root causes we identify and address: - Dead or weak battery - Failed starter motor - Bad alternator (battery discharged from driving) - Parasitic battery drain - Wiring fault or shorts - Blown fusible link - Corroded or loose connections - Security system lockout - PCM/BCM communication issues --- ## DIY Repair Rescue For customers who attempted self-repair of a starter, alternator, or battery and encountered problems, Zentech provides **on-site rescue service**. We regularly handle: - Replaced battery but car still won't start → alternator was the root cause, now new battery is also damaged - New alternator installed but charging light still on → wiring fault, bad ground, or blown fusible link - Starter replaced but vehicle still clicks or won't crank → ring gear damage, power supply issue, or incorrect starter - Stripped mounting bolt or broken electrical connector during DIY attempt - Wrong replacement part purchased and installed - Cannot access component without removing additional engine parts **Austin DIY rescue:** https://zentechautomotive.com/austin/diy-help **Colorado Springs DIY rescue:** https://zentechautomotive.com/colorado-springs/diy-help --- ## Battery Installation Problems — A Dedicated Resource Modern battery replacement is significantly more complex than it was 15 years ago. Zentech regularly performs rescue service for battery installs that went wrong. Specific scenarios covered at the links below: - **BMS / Error Codes:** Dashboard warning lights after a battery swap are almost always caused by the Battery Management System (BMS) not being programmed to recognize the new battery. Zentech programs the battery into the BMS using professional scan tools on every install. Scan tools also restore the system date and time lost when battery power was disconnected. - **Car Won't Start After Install:** The most common causes are terminal caps left on the battery posts (new batteries ship with plastic caps that must be removed), a loose terminal connection, or a blown main fuse from a wrench short during installation. - **Terminal Caps Left On:** New batteries from retail stores (AutoZone, O'Reilly, NAPA, Advance) ship with plastic caps over the terminals. If the cable clamps are tightened over the caps, there is no electrical connection. The vehicle appears completely dead despite the battery being installed. - **Blown Main Fuse / Fusible Link:** Connecting the positive cable first makes the circuit live before the negative is secured. If a metal tool bridges the positive terminal to any chassis ground, the resulting short blows the main fuse or fusible link. Zentech locates and replaces blown fusible links on-site. - **Reversed Polarity:** Installing a battery backwards (positive to negative terminal) sends reverse current through all circuits simultaneously. Damage typically includes blown main fuses and alternator diode failure; severe cases can affect the BCM or ECM. - **SAS Relearn & Module Sweep:** Every Zentech battery replacement includes a steering angle sensor (SAS) relearn and full module sweep. Modern vehicles have 20–80+ individual electronic modules — ABS, stability control, airbag, TCM, BCM, steering, TPMS, HVAC, and more — each with non-volatile fault memory that persists through a power loss. A low-voltage event (dead battery, extended disconnect) actively sets codes across multiple modules simultaneously. Disconnecting the battery does not clear these codes — it causes them. Zentech connects to every available module, identifies low-voltage artifacts (U-codes, undervoltage faults, communication faults) versus genuine faults, clears the artifacts, and flags anything that warrants follow-up. The SAS relearn re-establishes the steering center-point reference the stability control system loses when battery power is interrupted — required after every battery disconnect on any ESC-equipped vehicle (federally mandated since 2012). **Austin SAS & module sweep guide:** https://zentechautomotive.com/austin/blog/steering-angle-sensor-relearn-module-sweep-austin-tx **Colorado Springs SAS & module sweep guide:** https://zentechautomotive.com/colorado-springs/blog/steering-angle-sensor-relearn-module-sweep-colorado-springs-co **Austin battery install problems:** https://zentechautomotive.com/austin/battery-install-problems **Colorado Springs battery install problems:** https://zentechautomotive.com/colorado-springs/battery-install-problems --- ## Common Questions Answered **Q: Can you service a vehicle in a parking garage?** A: Yes. Unlike flatbed tow trucks, we drive a standard vehicle and can access any level of any parking garage in Austin, Round Rock, Colorado Springs, and our other service areas. **Q: What if I replaced my battery but the car still won't start?** A: The most common cause is a bad alternator — it drained the old battery and will drain the new one too. We diagnose the full system before replacing parts. Call (512) 598-5658 in Austin, or contact us online for Colorado Springs. **Q: What if my DIY alternator installation went wrong?** A: We provide rescue service for failed DIY installations throughout our service areas. We'll come to your location, diagnose the issue, and complete or correct the repair on-site. **Q: How long does a mobile repair take?** A: Battery replacements average 20–30 minutes. Starter and alternator replacements typically take 45–90 minutes depending on vehicle accessibility. Most customers are back on the road within one hour. **Q: Do you service parking garages?** A: Yes — this is one of our most common call types. We're called when someone returns to their vehicle in a downtown parking structure or airport garage with a dead battery. Tow trucks can't help in that situation. We can. **Q: What is a parasitic battery drain and can you diagnose it?** A: A parasitic drain is when something in the vehicle continues drawing power from the battery after the car is turned off. Common causes include faulty modules, stuck relays, aftermarket electronics, or wiring shorts. We test for parasitic drains using an ammeter and circuit-by-circuit isolation. **Q: What areas do you serve in Austin, TX?** A: Our primary Austin-area service zone includes Austin (all zip codes), Round Rock, Cedar Park, Leander, Georgetown, Pflugerville, Lakeway, and Bee Cave. Extended zone includes Kyle, Buda, San Marcos, Bastrop, Lockhart, Taylor, and Marble Falls. **Q: What areas do you serve in Colorado Springs, CO?** A: Our primary Colorado Springs service zone includes all of Colorado Springs (including Briargate, Powers Corridor, and Old Colorado City), Fountain, Security-Widefield, and Manitou Springs. Extended zone includes Pueblo, Castle Rock, Monument, and Woodland Park. --- ## Key Pages - Austin Homepage: https://zentechautomotive.com/austin - Colorado Springs Homepage: https://zentechautomotive.com/colorado-springs - Austin DIY Repair Guide: https://zentechautomotive.com/austin/diy-help - Colorado Springs DIY Repair Guide: https://zentechautomotive.com/colorado-springs/diy-help - Austin Battery Install Problems Guide: https://zentechautomotive.com/austin/battery-install-problems - Colorado Springs Battery Install Problems Guide: https://zentechautomotive.com/colorado-springs/battery-install-problems - Austin Service Area Blog: https://zentechautomotive.com/austin/blog - Colorado Springs Service Area Blog: https://zentechautomotive.com/colorado-springs/blog - Careers: https://zentechautomotive.com/austin/careers ## Service Area Detail Pages (Austin) - Round Rock (78664–78683): https://zentechautomotive.com/austin/blog/mobile-battery-starter-alternator-round-rock-tx - Austin (78701–78759): https://zentechautomotive.com/austin/blog/mobile-auto-electrical-austin-tx - Cedar Park & Leander (78613, 78641, 78646): https://zentechautomotive.com/austin/blog/mobile-starter-battery-cedar-park-leander-tx - Lakeway & Bee Cave (78738, 78734, 78733): https://zentechautomotive.com/austin/blog/mobile-auto-electrical-lakeway-bee-cave-tx - Georgetown & Pflugerville (78626–78633, 78660, 78691): https://zentechautomotive.com/austin/blog/no-start-diagnostics-georgetown-pflugerville-tx - Extended Zone TX: https://zentechautomotive.com/austin/blog/extended-mobile-service-kyle-buda-san-marcos-bastrop-tx ## Service Area Detail Pages (Colorado Springs) - Colorado Springs (80903–80929): https://zentechautomotive.com/colorado-springs/blog/mobile-battery-starter-alternator-colorado-springs-co - Fountain & Security-Widefield (80817, 80911): https://zentechautomotive.com/colorado-springs/blog/mobile-auto-electrical-fountain-security-widefield-co - Manitou Springs (80829): https://zentechautomotive.com/colorado-springs/blog/mobile-starter-battery-manitou-springs-west-colorado-springs - Extended Zone CO: https://zentechautomotive.com/colorado-springs/blog/extended-mobile-service-pueblo-castle-rock-monument-woodland-park-co