Technology is great. Until it isn’t.
For those of us who use technology regularly, we understand how to get things done. We work with programs, click buttons, and get results. But it can be a frustrating experience at best when something goes wrong.
As cars become more technologically advanced, it isn’t just a process of replacing a part on a scheduled basis. Technology keeps every part in tune, ensures everything works according to manufacturer’s guidelines.
What is an onboard diagnostic system?
A vehicle’s onboard diagnostic system (OBD) is a computer-based system that monitors the performance and condition of various components within the vehicle. It’s primarily designed to detect malfunctions and issues related to the engine and emissions system.
OBD systems became standardized in the 1990s, with the introduction of OBD-II, which is now a mandatory feature in all vehicles sold in the United States since 1996. OBD-II systems use a standardized diagnostic port, usually located under the dashboard. Mechanics and technicians use specialized diagnostic tools to interface with this port to read diagnostic trouble codes (DTCs) and retrieve information about the vehicle’s performance and any detected issues.
Modern OBD systems can monitor and report on a wide range of parameters, including engine speed, fuel mixture, exhaust gas composition, vehicle speed, and many others. This data helps diagnose problems, track vehicle performance over time, and ensure compliance with emissions regulations.
Why do dashboard warning lights blink?
When you start your car or are driving down the street, sometimes you’ll notice a dashboard light illuminate. Blinking has a different meaning than if it stays lit.
Dashboard warning lights may blink for a variety of reasons, and it usually indicates an issue that requires attention. It might be:
- Intermittent issue – a loose connection or a sensor malfunctioning sporadically could trigger the warning light to blink on and off.
- Low fluid levels – if the fluid level is right at the threshold where it’s causing a problem but not consistently, the light might blink.
- Electrical issue – a faulty connection, a short circuit, or a failing component could cause dashboard warning lights to blink.
- Faulty sensor – vehicle’s use sensors in every system to monitor health and alert you to potential issues. If a sensor that triggers a warning light is malfunctioning, it may cause the light to blink.
- Pending issue – some vehicles have a system where warning lights will blink to indicate a pending issue that hasn’t yet triggered a steady warning light. This could be a pre-warning before a more serious problem develops.
- Anti-theft system – in some vehicles, the security or anti-theft system may cause dashboard warning lights to blink to indicate that the system is armed.
In any case, if you notice a dashboard warning light blinking, it’s essential to address the issue promptly. Ignoring it could lead to further damage to the vehicle or pose a safety risk. It’s best to consult the vehicle’s manual or have a qualified mechanic diagnose the problem.
Flashing or steady lights – what’s the difference?
The difference between flashing lights and lights remaining on generally indicates the severity or urgency of the issue being reported.
When a dashboard warning light is flashing, it typically signifies a more severe or urgent problem that requires immediate attention. Flashing lights often indicate a critical issue that could potentially cause damage to the vehicle or compromise safety. Examples of warning lights that might flash include the check engine light, oil pressure warning light, or brake system warning light.
If a dashboard warning light remains steadily illuminated without flashing, it suggests a less immediate concern. While it still indicates a problem that needs to be addressed, it may not be as urgent as a flashing light. For instance, a steady check engine light might indicate a fault in the vehicle’s emissions system or a minor engine issue that should be checked by a mechanic at the earliest convenience.
In both cases, it’s crucial to take action when a warning light appears on the dashboard. Ignoring warning lights, whether flashing or steady, can lead to further damage to the vehicle, decreased performance, or even safety hazards. Consulting the vehicle’s manual or seeking assistance from a qualified mechanic can help diagnose and resolve the underlying issue.
All dashboard lights are important, but these top the list …
Every manufacturer does something a little different with their dashboard lights. But in general, they use similar references so that you can move from one car to another and monitor safety measures to keep you and your passengers safe.
Never ignore a dashboard light; there’s a reason it’s illuminating. However, some are more critical than others.
Check Engine Light (CEL)
This light typically looks like an engine or reads “Check Engine” and is one of the most critical warning lights. It indicates a problem with the engine or its emissions system. While not always an emergency, it shouldn’t be ignored as it can indicate issues ranging from minor to severe, affecting performance, fuel efficiency, and emissions.
Oil Pressure Warning Light
This light resembles an oil can or reads “Oil” and indicates low oil pressure. Low oil pressure can lead to engine damage if not addressed promptly. Continuing to drive with low oil pressure can result in serious engine problems.
Battery/Charging System Light
This symbol usually looks like a battery and indicates a problem with the vehicle’s charging system. It could indicate a faulty battery, alternator, or other charging system components. Ignoring this warning could lead to a dead battery and the vehicle not starting.
Brake System Warning Light
This light usually looks like an exclamation mark inside a circle, sometimes accompanied by the word “BRAKE.” It indicates issues with the brake system, such as low brake fluid levels, brake pad wear, or a malfunction in the braking system. Ignoring brake warning lights can compromise braking performance and safety.
Coolant Temperature Warning Light
This light typically looks like a thermometer or reads “TEMP” and indicates that the engine is running too hot. Overheating can lead to engine damage or failure if not addressed promptly. Pull over safely and allow the engine to cool down before continuing, and then investigate the cause of the overheating, such as low coolant levels or a malfunctioning cooling system.
Have a problem? Take action
Now that you understand how critical a dashboard’s warning lights can be, it’s up to you to take action. Be on the lookout for steady or flashing lights. You can restart the car to ensure it wasn’t a connection problem. But if it remains lit, it’s time to move into action.
Give us a call, or stop by today. Together, we’ll ensure your car remains in good working condition for its lifetime.