Cars, like many other things, are not flawless. Despite the reputation of being dependable, it's reasonable to assume that something will eventually fail or malfunction regardless of the car you purchase. Fortunately, your car's metaphorical brain can detect an imminent issue before you notice it and typically notifies you with a warning. Modern vehicles come equipped with sensors and indicators that monitor tire pressure and washer fluid levels, among other things. However, do you understand the meaning of all the dashboard symbols? If not, don't worry because we've created a comprehensive guide that covers the ten most frequently encountered warning lights in cars.
Fog Lights:
Let's begin with a dashboard light that isn't precisely a warning sign. The fog light emblem appears similar to the regular headlights symbol, except for a wavy line in front instead of three beam-like lines. Fog lights are not available in all cars, so it's plausible that you might not encounter this dashboard light while operating a vehicle.
Tire Pressure Light:
Contemporary automobiles are equipped with tire pressure monitoring systems, and the warning light that features an exclamation mark inside a semi-circle denotes that one or more of your tires have low air pressure. If this symbol illuminates, don't panic. Instead, locate a secure area to halt and inspect your tires. If they appear deflated, cautiously drive to the closest gas station to inflate them. In most cases, the warning light will turn off automatically after filling the tires with air.
Engine Oil Warning Light:
For years, cars have been equipped with the ability to monitor their engine oil pressure. If a dashboard light resembling a gravy boat appears, it indicates an issue with your engine oil pressure. Inadequate oil pressure can prevent the engine from lubricating itself correctly, which may result in significant mechanical complications such as engine seizing and leaving you stuck. Therefore, it's extremely important to get this problem examined promptly.
Check Engine Light:
The dreaded check engine light is something you never want to see on your dashboard. This light indicates that one of the numerous sensors monitoring your vehicle has detected a problem with the engine. It could be anything from a defective spark plug to a major failure such as the intake manifold or low compression. Unless you're highly skilled, it's best to leave such repairs to a trusted mechanic. Regardless, if you notice the check engine light illuminated on your dashboard, it signifies a problem that requires attention, and you should not delay visiting an auto repair shop. The quicker you can address the issue, the better. Here's a list of common check engine light causes.
Traction Or Stability Control Light:
The majority of cars equipped with traction or stability control allow you to disable these features. If you notice an old sedan's rear view followed by squiggly lines on the road, it indicates that your stability control system is either partially or fully deactivated. There are two possible explanations for this: either you turned off the function to engage in some spirited driving (remember, you're not Lewis Hamilton, so turn it back on), or the feature has malfunctioned. It's advisable to allow the vehicle's computer to handle traction for you, so try to reactivate the stability control system as soon as possible for optimal safety.
Coolant Level Warning Light:
If you notice a small thermometer icon appear on your dashboard, it is likely an indication that your vehicle is experiencing overheating. Several factors could have contributed to this problem; however, the safest course of action is to pull over and allow the engine to cool down for an extended period. Once the engine has sufficiently cooled, open the hood and inspect the coolant reservoir, checking the coolant level with a rag. In the event that the engine, coolant reservoir, or coolant tank appears to be emitting smoke, you should consider contacting a tow service.
Brake System Warning Light:
If you observe an exclamation mark enclosed in a circle on your dashboard, it is an indication of a malfunction with your brake system. This could stem from an issue with brake components or require a hydraulic fluid refill. In this situation, it is imperative to immediately stop your car and contact a tow truck in a safe manner. Operating a vehicle with a faulty brake system is hazardous and should be remedied as soon as possible.
ABS Sensor Warning Light:
The ABS warning light is not an indicator of a problem with your car's physical brakes, but rather with its anti-lock brake system. If this light is on, it's possible that your car's brakes could lock up if you stop too hard, which would make it difficult to come to a complete stop. Since ABS is one of the most important safety features in modern cars, it's important to take your vehicle to a shop to have it checked out.
Airbag Warning Light:
Nowadays, it's mandatory for all cars to have airbags, and you may notice an airbag warning light on your dashboard. This light can indicate various issues such as the failure of sensors that detect crashes and deploy airbags during an accident. If this warning light appears frequently, it's crucial to take your vehicle to a trusted mechanic for a thorough inspection.
Battery Light:
When a little red battery symbol appears on your dashboard, it indicates that your car is running solely on the battery's power. Without the engine running, the alternator is not generating electricity to recharge the battery. If you continue to use electrical components like the radio or lights, the battery will eventually drain and require a jump-start to start the car again. If the battery light is illuminated while the engine is running, it could indicate that the charging system is not functioning properly. In this case, it is recommended to take your car to a mechanic to diagnose and repair the issue.
Unlock Gear Selector Light:
The green shoe is a symbol that appears inside the brake-related icon, which consists of a circle with small arcs at the three and nine o'clock positions representing brake drums and shoes. This symbol is exclusive to cars equipped with automatic transmissions and indicates that the driver must apply the brakes to release the gear selector before shifting from park mode. Once the driver steps on the brake pedal, the symbol should disappear.
Low Fuel Light:
When this light is turned on, it indicates that the fuel level in your vehicle is low and it's time to refuel. Some vehicles have a predetermined amount of fuel left in the tank before this light comes on, while others use the car's computer to predict when the fuel level will run low based on recent driving behavior and remaining fuel. In some cases, a basic light is used instead of an icon to signal the low fuel level.
Diesel Glow Plugs Active:
This particular symbol is exclusive to diesel-fueled vehicles and indicates that the glow plugs are operating. The glow plugs are responsible for heating the air in the cylinder before ignition to prevent failure to start, as the metal internals can absorb the heat from the fuel/air compression cycle. (Unlike gasoline-powered vehicles, diesel engines do not have spark plugs and depend on compression-generated heat for combustion.) Once the light goes out, you can start your vehicle. If it flashes, there could be a malfunction with the glow plug system.
