Your Dashboard Lights Checklist: What Each Warning Sign Means

Bob Cornwall • May 1, 2025

Your vehicle’s dashboard is designed to keep you informed about the health and performance of your car. While some lights are simple reminders, others can indicate serious problems that need immediate attention. At Super Service of Pomona Valley, we want to help you understand what these warning signs mean so you can keep your car running safely and avoid costly repairs.


Check Engine Light

One of the most common and often misunderstood warning lights is the check engine light. This indicator can signal anything from a loose gas cap to a more serious engine issue. If the light is steady, it’s best to schedule an inspection soon. If it’s flashing, it could mean a more urgent problem that requires immediate attention. Our team at Super Service of Pomona Valley can quickly diagnose and resolve any check engine light concerns.


Oil Pressure Warning Light

This light looks like an old-fashioned oil can and indicates low oil pressure. If this light appears, pull over as soon as possible and check your oil level. Driving with low oil pressure can cause severe engine damage. If you’re unsure what to do, bring your vehicle to Super Service of Pomona Valley for a professional inspection.


Battery Warning Light

A battery-shaped icon on your dashboard usually means your charging system isn’t working properly. This could be due to a failing battery, alternator issues, or loose connections. If this light comes on while driving, your car may lose power soon. It’s best to have your battery and charging system tested to prevent a breakdown.


Brake Warning Light

Your brake warning light can mean several things, including low brake fluid, worn brake pads, or a more serious issue with your braking system. Since brakes are essential for safety, don’t ignore this light. Schedule a brake inspection at Super Service of Pomona Valley to ensure your car stops efficiently and safely.


Tire Pressure Monitoring System (TPMS) Light

The TPMS light looks like an exclamation mark inside a horseshoe and indicates low tire pressure. Driving with low tire pressure can affect fuel efficiency, tire wear, and handling. Check your tires and add air if needed. If the light stays on, you may have a slow leak or sensor issue that needs professional attention.


Coolant Temperature Warning Light

If you see a thermometer icon on your dashboard, your engine may be overheating. Pull over and let your car cool down before checking coolant levels. Driving with an overheated engine can cause major damage. If this light comes on frequently, bring your car to Super Service of Pomona Valley for a cooling system inspection.


Airbag Warning Light

The airbag warning light means there may be an issue with your vehicle’s airbag system. Since airbags play a critical role in safety, this is not something to ignore. If your airbag light is on, have it inspected as soon as possible to ensure your safety in case of an accident.


FAQ: Decoding Your Dashboard Lights

1. What should I do if my check engine light turns on?
It depends on how it’s behaving. A steady check engine light usually isn’t an emergency but does need attention soon. A flashing light, however, often means a serious engine issue that could lead to damage if you keep driving. When in doubt, it’s best to have it checked right away.


2. Why is the oil pressure warning light so urgent?
This light means your engine may not be getting the oil it needs. Low oil pressure can lead to engine damage in a matter of minutes. If you see this light, pull over safely, turn off the engine, and check the oil level. Then, have the issue diagnosed by a professional.


3. What causes the battery light to come on while driving?
This light can be triggered by a weak battery, a failing alternator, or a loose wire in the charging system. If it comes on while you’re driving, your vehicle could eventually stall or fail to restart. It’s best to get your charging system tested as soon as possible.


4. Is it safe to drive with the brake warning light on?
It’s risky. This light could point to low brake fluid, worn pads, or another issue that impacts your stopping power. Don’t ignore it—get your brakes checked right away to stay safe behind the wheel.


5. What does the TPMS warning light mean?
This light is alerting you to low tire pressure in one or more tires. Driving with under inflated tires affects gas mileage, handling, and safety. Check the pressure and inflate as needed. If the light doesn’t turn off, there could be a slow leak or sensor problem.


6. How serious is the coolant temperature warning light?
Very. This light means your engine is getting too hot, which can lead to severe damage if you keep driving. Pull over, let the engine cool, and check coolant levels once it's safe. Recurring issues should be checked by a technician.


7. Should I worry if the airbag light is on?
Yes—this light indicates a possible fault in the airbag system. If left unchecked, airbags may not deploy in an accident. It’s important to have the system inspected as soon as possible for your safety.



Schedule a Dashboard Light Inspection Today

Understanding your dashboard warning lights can help prevent costly repairs and keep you safe on the road. If a warning light appears and you’re unsure what it means, let the experts at Super Service of Pomona Valley take a look. Visit us at 348 E. Foothill Blvd, Pomona, CA, or call us at (909) 316-6166 to book your inspection. Learn more at www.superserviceofpomonavalley.com.

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