Peterbilt 379 Dash Warning Lights

Many drivers are familiar with the red and yellow warning lights on the side of the Peterbilt 379. But what do Peterbilt 379 Dash Warning Lights mean, and how do you know when to use them?

The Peterbilt 379 is a heavy-duty truck that’s been around for many years. Like other trucks of its type, the 379 has several warning lights that can help warn drivers of potential problems.

We’ll take a closer look at each light in this post and explain what they mean. Bottom Line: The Peterbilt 379 dash warning lights are an essential part of safety on the road. By understanding their purpose and how to use them, you can avoid accidents and keep yourself and others safe.

See also: Mack Truck Warning Lights On Dash

What are Peterbilt 379 Dash Warning Lights?

What are Peterbilt 379 Dash Warning Lights
What are Peterbilt 379 Dash Warning Lights?

The Peterbilt 379 dash warning lights denote various critical engine and systems conditions that must be resolved in order to continue travel. The truck will eventually stop operating if these warnings remain unaddressed for too long. Here’s a look at each warning light and what it means:

📢Read also: Bluebird Bus Dash Warning Lights

  1. Engine Overheat Warning – This light comes on when the engine overheats, potentially causing damage to the truck and crew. Take action to cool down the engine as soon as possible by turning off auxiliary power, shutting down fans, or opening windows.
  2. Low Fuel Level Warning – This light indicates that there isn’t enough fuel in the tank to complete the trip. Immediately refuel your truck before continuing on your route.
  3. Tires Low-Pressure Warning – This light is displayed when one or more of the tires has low air pressure. In order to prevent dangerous driving conditions, seek assistance from a mechanic as soon as possible in order to have all four tires pumped up to proper pressure levels.
  4. Brakes On Warning – This light is displayed when the brakes are applied suddenly, preventing further travel until they have time to cool down. Avoid braking harshly while driving; use caution instead and allow plenty of stopping distance between yourself and other vehicles.
  5. Wiring Fault Warning – If you see this warning light illuminated, it means there’s a problem with one of the truck’s electrical.

Recommended article: Massey Ferguson Dash Warning Lights and Symbols

What does the Peterbilt 379 dash warning light mean?

What does the Peterbilt 379 dash warning light mean
What does the Peterbilt 379 dash warning light mean?

The Peterbilt 379 dash warning light means the vehicle has experienced a problem and needs to be serviced. This could mean anything from a simple maintenance issue to a more severe problem. If you experience this light coming on, it is essential to bring your truck in for servicing as soon as possible so that the issue can be resolved and the warning can be turned off.

How do you check the Peterbilt 379 dash warning lights?

How do check the Peterbilt 379 dash warning lights
How do you check the Peterbilt 379 dash warning lights?

The Peterbilt 379 dash warning lights may indicate a problem with the vehicle. If one or more of the warning lights are lit, take the vehicle to a mechanic for inspection. The warning lights may also indicate that the vehicle’s airbags are about to deploy. If you do not know what the specific warning light means, consult your owner’s manual.

⚡️Other article: Harley Davidson Dash Warning Lights Meaning

Fixing the dash warning lights on a Peterbilt 379

When you see a Peterbilt 379 with warning lights on the dashboard, it may be something as simple as a loose connection or a bad light. Fixing them is usually pretty easy, and can save you some time and hassle down the road. Here’s how to fix most of the standard dash warning lights on a 379:

  1. Check the ground connection between the warning light switch and the vehicle body. This is usually done by removing the screw holding the switch in place and tapping on either end of the wire to ensure they’re good connections. If there’s still an issue, replace the wiring harness near the switch.
  2. Ensure all connector pins on each warning light are correctly seated in their sockets. Sometimes this can be done by gently pushing down on each pin until it clicks into place.
  3. If there’s an intermittent problem with one or more warning lights, check for a bad electrical connection between that light and its corresponding socket on the vehicle body. This can be done by using an ohmmeter to measure the resistance between each pin and its socket (or vice versa). Replace any faulty connections with new ones before restarting your truck.

The article “Peterbilt 379 Dash Warning Lights” describes the different warning lights that may be found on a Peterbilt 379 dash. It is essential to be aware of these warning lights so that you can take appropriate action when one or more of them are illuminated.

In some cases, the problem may be something as simple as a loose wire, while in other cases, it could indicate a more serious issue that needs to be addressed by a qualified technician. By familiarizing yourself with the meaning of each warning light, you can help keep your Peterbilt 379 running smoothly and avoid costly repairs down the road.

🎯Suggested article: 05 Chevy Trailblazer Dash Warning Lights

FAQs About Peterbilt 379 Dash Warning Lights

What are the most common dashboard warning lights?

When driving, one may come across various dashboard warning lights that indicate an issue with the vehicle. These common indicators can range from a fog light being activated at the front of the car, to a power steering warning or washer fluid levels becoming low. Other common signs are a brake pad alert and cruise control on notice to inform drivers that these functions are enabled. Direction indicator alerts and rain and light sensors may also be present to ensure safe operation throughout all conditions.

What does the warning light symbol mean?

When a red light appears, it is essential for the driver to take immediate action and not drive any further. If yellow or orange lights are visible, it indicates that there may be an issue with the vehicle, which requires prompt attention. In contrast, green or blue lights typically signify that certain car functions have been activated or are in use.

What causes all the dash warning lights to come on?

When dashboard lights all illuminate simultaneously, it is typically an indication of a problem with the alternator or charging system. This phenomenon can be attributed to low voltage and associated electrical anomalies. An alternator test should always be conducted to ensure it is functioning correctly when replacing the battery.

What is the master warning light?

This vehicle is equipped with a Master Warning light that serves as an indicator of potential system issues. It is accompanied by a message in the vehicle’s information display which provides further details regarding the issue at hand. As soon as this warning appears, it should be addressed immediately to prevent any additional damage or risk.

5/5 - (36 votes)

1 thought on “Peterbilt 379 Dash Warning Lights”

  1. I recently had a chance to drive the Peterbilt 379 and I was really impressed by the warning lights on the dash. They were so clear and easy to read that I could tell at a glance when something was wrong with my truck. It’s great to have such an efficient way of monitoring your vehicle while you’re on the road. Highly recommend this model!


Leave a Comment


Ask an Expert

*Follow this page every hour. We will respond to you regarding the comment you make or the question you ask.