CHECK ENGINE LIGHT DIaGNOSIS

DIaGNOSTIC CLaRITY FOR CHECK ENGINE LIGHT ISSUES
At Southwest Auto, we know the stress a check engine light can cause—but our goal is to remove that uncertainty. We’ve built our reputation in the DFW area by combining dealership-level technology with transparent, customer-first service. Our ASE-certified and factory-trained technicians use OEM-level diagnostic tools to find the source of the warning—whether it's an emissions issue, ignition fault, or sensor failure—then clearly explain what needs attention and why.
We prioritize clear communication and honest recommendations. You'll never get vague answers or rushed service. Instead, we provide a step-by-step diagnosis, a transparent quote, and a timeline you can count on. We also offer conveniences like after-hours drop-off and digital updates, so you stay informed and in control. With over 37 years of experience and a 3-year/36,000-mile warranty on qualified repairs, Southwest Auto delivers precision and peace of mind—without the dealership runaround.
aCCURaTE DIaGNOSTICS FOR ENGINE LIGHTS
Ignoring a check engine light can lead to costly issues down the road, but with the right diagnostics, the fix can often be simple. At Southwest Auto, we invest in high-level scan tools that allow our ASE-certified and factory-trained technicians to decode engine trouble codes accurately and quickly. We perform detailed testing to verify the problem—not just reset the light.
Once we identify the issue, you’ll get a clear explanation of what’s wrong and what your options are. Whether it’s a sensor failure or a more complex internal issue, we’ll explain what needs immediate attention and what’s safe to monitor. With loaner vehicles, after-hours drop-off, and transparent quotes, we remove the hassle often associated with check engine diagnostics.

comfort, convenience, & confidence
10% off parts & labor (up to $50) for Military, Teachers, Students, and First Responders
Comfortable Waiting Area with WiFi
Refreshments Available
Handicap Accessible Auto Facility
Complimentary Loaner Vehicles
*Subject to Availability

3-Year/36,000-Mile Nationwide Warranty
24/7 Towing Service
After-Hours Vehicle Pick-Up & Drop-Off
Complimentary Ride Share
*Subject to Availability
Comfortable Waiting Area with WiFi
Refreshments Available
Handicap Accessible Facility
Complimentary Loaner Vehicles
2-Year/24,000-Mile Nationwide Warranty
24/7 Towing Service
After-Hours Vehicle Pick-Up & Drop-Off
Complimentary Ride Share Service
