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Most common truck warning lights and what they mean

Most common truck warning lights and what they mean

When you’re out on the open road, your truck’s dashboard can be your best friend. It communicates essential information to you through various warning lights. However, it’s not uncommon for these lights to leave truckers puzzled about what they mean and how to respond. Let’s demystify the five most common truck warning lights and provide insights into what they signify.

1. Check Engine Light

The «Check Engine» light is one of the most notorious and frequently misunderstood warning lights. It can signal a range of issues, from minor problems like a loose gas cap to more severe engine-related troubles. When this light comes on, it’s best to have your truck’s engine system thoroughly inspected to determine the exact issue.

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2. Oil Pressure Warning Light

The oil pressure warning light indicates that your engine’s oil pressure is too low. Insufficient oil pressure can lead to engine damage if not addressed promptly. If this light comes on, pull over safely and turn off the engine. Check the oil level, and if it’s low, add oil. If the light persists, consult a mechanic.

3. Battery Warning Light

The battery warning light signifies a problem with your truck’s charging system. This could be due to a failing battery, a faulty alternator, or a loose belt. If this light illuminates, it’s best to have your electrical system inspected and the battery tested.

We recommend reading: 7 Common Truck Maintenance Tasks You Shouldn’t Ignore 

4. Brake System Warning Light

The brake system warning light indicates an issue with your truck’s braking system. This could result from low brake fluid, worn brake pads, or a more severe problem. If this light comes on, it’s essential to address it immediately. Ensure your brake fluid level is adequate and have your brakes inspected for wear and tear.

5. Tire Pressure Monitoring System (TPMS) Light

The TPMS light alerts you to variations in tire pressure. It can be triggered by underinflated or overinflated tires, indicating a need for pressure adjustment. Maintaining proper tire pressure not only ensures safety but also improves fuel efficiency.

Understanding the meaning of these common truck warning lights is a crucial aspect of trucker safety and vehicle maintenance. When these lights illuminate, your truck is communicating a potential issue that should not be ignored. Fast Service is your partner on the road, and our 24/7 Roadside Assistance is here to support you when issues arise. We understand the importance of addressing warning lights promptly to keep your truck in top shape. Whether it’s a check engine light or a tire pressure monitoring system alert, having a team of experts at your disposal ensures you can handle any situation on the road.

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