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ELECTRICAL / CHECK ENGINE DIAGNOSTICS
We all tend to panic when that pesky warning light flashes on our dashboard. The check engine light is more than a mild inconvenience — it’s your vehicle’s way of telling you something might be wrong under the hood. At Silva Family Automotive, we specialize in check engine light diagnostics to help you understand the problem and get back on the road safely.
How Do We Diagnose Your Check Engine Light?
Our expert technicians use advanced tools to connect with your car’s onboard computer system. This connection reveals detailed error codes, sensor data, and system metrics that pinpoint the exact issue affecting your vehicle. This isn’t just a simple scan — it’s a thorough assessment performed by trained professionals who know how to interpret the data.
What Do the Different Dashboard Light Colors Mean?
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Green or Blue Lights: Indicate that a system is active or operating normally, such as EcoBoost or drive mode indicators.
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Orange/Yellow Lights: Usually warn that your vehicle needs service or repair soon — like maintenance reminders or the check engine light. Some can be serious, so don’t ignore them!
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Red Lights: Signal immediate action is required. This could be a safety warning (like your seatbelt reminder) or a mechanical alert (such as engine overheating). If you see a red light, pull over safely and address the issue promptly to avoid damage or breakdown.
Important Tips:
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Every car is different — dashboard symbols may vary. Always check your vehicle’s owner’s manual if unsure.
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Most dashboard lights briefly illuminate during startup as the system runs a check. If they turn off quickly, your vehicle is operating normally.
18 Common Dashboard Warning Lights You Should Know
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Oil Pressure Warning Light
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Tire Pressure Warning Light
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Engine Temperature Warning Light
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Traction Control Alert Light
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Anti-lock Brake System (ABS) Warning Light
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Traction Control Malfunction Light
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Engine Warning Light (Check Engine Light)
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Battery Alert Light
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Low Fuel Indicator Light
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Automatic Shift Lock or Engine Start Indicator Light
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Seat Belt Reminder Light
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Airbag Warning Light
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Security Indicator Light
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Fog Lamp Indicator Light
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Washer Fluid Indicator Light
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Brake Warning Light
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Lane Departure Warning Light
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Transmission Temperature Warning Light
Why You Shouldn’t Ignore These Lights
The check engine light can flicker on for many reasons — from minor issues to major mechanical problems. Ignoring it could lead to expensive repairs or leave you stranded. Our technicians provide quick, accurate diagnostics and explain the problem clearly, so you can make informed decisions.
The ABS warning light is another crucial indicator. If it’s on, your anti-lock brake system may not be working properly, risking wheel lock-up and loss of control during sudden stops. This is a serious safety concern that needs immediate attention.
Why Choose Silva Family Automotive for Your Diagnostics?
We opened our shop to meet the need for reliable, quality auto diagnostics in San Antonio. Diagnosing vehicle issues goes beyond a simple OBDII scan — it requires expertise, patience, and a deep understanding of automotive systems. We take the time to explain what’s wrong and discuss your best repair options.
Remember:
Next time your check engine or ABS light comes on, don’t panic or ignore it. Pay attention to how your vehicle feels and sounds. If something seems off, bring your car to us for a professional diagnosis and clear guidance. We’ll help you get your vehicle running safely and smoothly again.
Car Diagnostics vs. Scan Tool – FAQs
Q: What’s the difference between a car diagnostic and a scan tool?
A scan tool simply reads trouble codes from your vehicle’s computer, giving you a basic idea of
where a problem might be. A full car diagnostic, however, goes deeper. It combines scan tool data
with expert testing, visual inspections, and real-world experience to find the true root cause of
the issue.
Q: Why isn’t a scan tool alone enough to fix my car?
Trouble codes don’t always tell the full story. For example, a “misfire” code could be caused by
spark plugs, ignition coils, fuel injectors, or even wiring issues. Without proper diagnostics, you
may waste time and money replacing parts that aren’t the problem.
Q: How do professional diagnostics save me money?
By pinpointing the exact cause of the issue, diagnostics prevent unnecessary repairs and part
swaps. Instead of guessing, certified technicians identify the problem correctly the first time—
saving you both time and repair costs.
Q: Can I do car diagnostics at home with my own scanner?
While consumer scan tools are handy, they can’t replace professional equipment and technician
expertise. Advanced diagnostics use factory-grade tools, live data monitoring, and hands-on
testing that home scanners can’t match.
Q: Why choose Silva Family Automotive for diagnostics?
We combine the latest technology with honest, family-owned service. Our ASE-certified team in
San Antonio takes the time to explain your results so you understand what’s happening with your
vehicle—no gimmicks, no guesswork.
