It’s a familiar scenario for almost every driver: you’re on a smooth drive, perhaps enjoying your favorite music, when suddenly a beep breaks the silence, and an unfamiliar symbol lights up on your car’s dashboard. Immediately, questions flood your mind: Is something wrong? Is it serious? What does this car icon even mean?
While some car dashboard symbols are instantly recognizable, others can leave you scratching your head. However, understanding these symbols is crucial. They are your car’s way of communicating vital information, from simple notifications to urgent warnings that could prevent breakdowns or even accidents. Knowing what these warning lights and indicators signify empowers you to take timely action, ensuring your safety and the longevity of your vehicle.
Decoding the Dashboard: Types and Colors of Car Icons
Not every light on your dashboard signals trouble. In fact, many are simply indicators of active features or systems, while others are proactive alerts designed to keep you safe and informed. Dashboard lights can be broadly categorized by their function and, importantly, by their color.
Color is a key indicator of the urgency and type of message a car icon is conveying:
- Green or Blue: These are generally good news! Green or blue lights indicate that a particular system or feature is engaged and operating correctly. Think of your headlights, turn signals, or cruise control indicators – these are typically green or blue.
- Yellow or Amber: These colors signal caution. Yellow or amber warning lights usually mean that your vehicle requires attention soon. It might be a less urgent issue, like low washer fluid, or a signal that a system needs servicing, such as the tire pressure monitoring system. These are not immediate emergencies, but they shouldn’t be ignored.
- Red: Red lights are your car’s way of saying “Pay attention NOW!” Red warning lights indicate a serious problem that needs immediate action. These could be safety-related, like a seatbelt reminder or airbag warning, or they could signal a critical mechanical issue like engine overheating or low oil pressure. A red light often means you should pull over as soon as it is safe to do so and investigate the problem. Ignoring a red warning light can lead to significant damage or dangerous situations.
- Flashing Lights: Any flashing light, regardless of color, generally indicates a more urgent situation than a solid light. A flashing red light is especially critical and demands immediate attention.
Remember, every car model is slightly different, and while many symbols are standardized, there can be variations. Your vehicle’s owner’s manual is the ultimate guide to understanding the specific icons in your car. It’s always a good idea to familiarize yourself with it. Also, keep in mind that many dashboard lights will briefly illuminate when you start your car as part of a system check. This is normal, and as long as they turn off within a few seconds, it indicates that the system is functioning correctly.
18 Essential Car Warning Lights and Symbols: Meanings and Actions
To help you navigate the sometimes confusing world of car icons, we’ve compiled a list of 18 common warning lights you might encounter on your dashboard. Understanding these symbols and knowing the appropriate action to take can help you stay safe on the road and keep your car running smoothly.
1. Oil Pressure Warning Light 2. Tire Pressure Warning Light 3. Engine Temperature Warning Light 4. Traction Control Alert Light 5. Anti-lock Brake System Warning Light 6. Traction Control Malfunction Light 7. Engine Warning Light (Check Engine Light) 8. Battery Alert Light 9. Low Fuel Indicator Light 10. Automatic Shift Lock or Engine Start Indicator Light 11. Seat Belt Reminder Light 12. Airbag Warning Light 13. Security Indicator Light 14. Fog Lamp Indicator Light 15. Washer Fluid Indicator Light 16. Brake Warning Light 17. Lane Departure Warning Light 18. Transmission Temperature Warning Light
1. Oil Pressure Warning Light
What It Means: Represented by a classic-looking oil can symbol, this red warning light indicates a critical issue with your car’s oil pressure system. It means that the oil pressure is too low, which could be due to low oil levels or a problem with the oil pump. Without proper oil pressure, your engine parts are not adequately lubricated, leading to potential serious damage. (Some vehicles might display the word “OIL” instead of the symbol).
What To Do: Low oil pressure can cause significant engine damage very quickly, so this is a serious warning. Safely pull over to the side of the road as soon as possible and turn off your engine. Wait a few minutes, then carefully check your engine oil level using the dipstick. Also, visually inspect around the engine for any obvious oil leaks.
If the oil level is low, adding oil might solve the immediate problem, and the light may turn off. However, if the oil level is sufficient or if the engine sounds noisy even after adding oil, it could indicate a more serious issue like a failing oil pump. In any case, even if the light goes off after adding oil, it’s essential to have your vehicle inspected by a qualified mechanic to determine the root cause of the low oil pressure and prevent future problems. Driving with low oil pressure is risky and can lead to costly engine repairs.
Read: How Long Can You Go Without an Oil Change?
2. Tire Pressure Warning Light
What It Means: Often resembling a horseshoe or a cross-section of a tire with an exclamation point, this yellow or amber symbol is the Tire Pressure Monitoring System (TPMS) warning light. It indicates that one or more of your tires has significantly deviated from the recommended tire pressure.
If the TPMS light is solidly illuminated, it means that the tire pressure in one or more of your tires is too low or, less commonly, too high. If the TPMS symbol flashes for about a minute when you start your vehicle and then remains on, even if your tire pressures seem correct, it suggests a malfunction within the TPMS system itself, potentially with one or more of the tire pressure sensors.
What To Do: Driving with improper tire pressure is unsafe and can lead to poor handling, reduced fuel efficiency, and premature tire wear, and even tire failure. As soon as it is safe, stop and check the pressure of all your tires using a tire pressure gauge. Inflate or deflate them to match the recommended pressure listed on the sticker usually found on your driver’s side doorjamb or in your owner’s manual.
If the light persists after adjusting tire pressures, or if it’s flashing, it’s advisable to have your TPMS checked by a professional. While a TPMS malfunction won’t directly impact tire performance, it means the system won’t be able to warn you of future pressure issues. Many tire service centers, like Virginia Tire & Auto, offer free air for tire inflation and can diagnose and repair TPMS issues.
Read: My TPMS Light Is On: What Does It Mean?
3. Engine Temperature Warning Light
What It Means: This red symbol, often depicted as a thermometer submerged in liquid or with wavy lines, is the engine temperature warning light. It indicates that your engine is overheating, which is a serious issue. Overheating is most commonly caused by problems with the engine coolant (antifreeze) system, but can also result from other factors.
What To Do: An overheating engine can cause severe damage, so immediate action is necessary. First, try turning off your car’s air conditioning and turning the heater to its maximum setting and fan speed. This might seem counterintuitive, but it helps to draw heat away from the engine and into the passenger compartment. If the temperature gauge doesn’t start to decrease within a few minutes, or if steam or a burning smell is present, pull over to a safe location immediately and turn off the engine.
Allow the engine to cool down completely for at least 15-20 minutes before attempting to open the hood. Opening the hood while the engine is hot can be dangerous due to the risk of burns from escaping steam or hot coolant. While waiting for it to cool, you should plan your next steps. Calling roadside assistance is a good option, as they can often help with topping off coolant or arranging for a tow to a repair shop. Ignoring an overheating engine can lead to very expensive repairs.
(Many auto service providers, like Virginia Tire & Auto, offer complimentary roadside assistance coverage with their services.)
Read: What Happens When a Car Overheats?
4. Traction Control Light
What It Means: This yellow symbol, usually showing a car with squiggly lines underneath, indicates that your vehicle’s traction control system is actively engaged. The traction control system is designed to prevent wheel spin and maintain traction, especially on slippery surfaces like rain, snow, or ice. It works by using the anti-lock braking system (ABS) to detect when a wheel is losing grip and then applies braking force to that wheel until traction is regained.
What To Do: If this light is flashing or illuminated, it means the traction control system is doing its job. Generally, you can continue driving, but you should be aware of potentially slippery road conditions and drive accordingly. Reduce your speed and avoid sudden acceleration or braking. The system is working to keep you stable.
5. Anti-lock Braking System (ABS) Warning Light
What It Means: The ABS warning light, usually displaying the letters “ABS” in yellow or amber, indicates a problem with your vehicle’s anti-lock braking system. The ABS is a crucial safety feature that prevents your wheels from locking up during hard braking, allowing you to maintain steering control in emergency braking situations, especially on slippery surfaces. When this light is on, the ABS system may not be functioning correctly.
What To Do: Because the ABS is a critical safety system, it’s important to address this warning light promptly. While your regular brakes will likely still function, the anti-lock function might be compromised, meaning your wheels could lock up under hard braking. Schedule an appointment with a qualified mechanic as soon as possible to diagnose and repair the ABS issue. Driving without a functioning ABS system, especially in areas with frequent rain or snow, can increase your risk of accidents.
Read: How Does the Anti-Lock Braking System Work?
6. Traction Control Malfunction Light
What It Means: This yellow or amber light, often similar to the traction control light but sometimes with the word “OFF” or “!” symbol, signals a malfunction in your vehicle’s traction control system. It indicates that the system may not be operating as intended due to a sensor problem, damaged component, or other issue. In some vehicles, the traction control system and ABS are linked, so this light might also illuminate if there’s an ABS problem.
What To Do: While a traction control malfunction light usually won’t prevent you from driving in normal conditions, it means that the traction control system might not be available when you need it in slippery conditions. It’s recommended to have your vehicle inspected by a mechanic to diagnose the cause of the malfunction and ensure your safety in inclement weather. Getting it checked soon will ensure that this important safety feature is ready when you need it.
7. Engine Warning Light (Check Engine Light)
What It Means: The “Check Engine Light,” often depicted as a stylized engine block in yellow or amber (or sometimes red), is one of the most common and often misunderstood car icons. It can illuminate for a wide range of reasons, from minor issues to serious problems. Sometimes, it’s triggered by something as simple as a loose gas cap, which can cause fuel vapors to escape. However, it can also indicate significant engine or emissions system problems, such as issues with sensors, catalytic converter, or even low oil pressure or overheating. (Some dashboards may display the words “CHECK ENGINE” instead of the symbol).
What To Do: The appropriate action depends on the behavior of the check engine light. If the light is solid yellow or amber and your car seems to be driving normally without any unusual noises, smells, or performance issues, you can usually continue driving for a short distance, preferably to your home or a trusted mechanic. However, it’s still important to get it checked as soon as possible to prevent potential further damage.
If the check engine light is red or flashing, this indicates a more serious problem that requires immediate attention. A flashing check engine light often signals a severe issue that could cause significant damage to your engine if ignored. In this case, you should stop driving as soon as it is safe to do so and have your vehicle towed to a repair shop for diagnosis and repair. Ignoring a flashing red check engine light can lead to costly engine damage.
Read: Is It Safe to Drive Your Car With the Check Engine Light On?
8. Battery Alert Light
What It Means: This red light, usually shaped like a battery symbol with positive (+) and negative (-) terminals, indicates a problem with your vehicle’s charging system. This system is responsible for charging the battery while the engine is running and providing power to electrical components. The light could be triggered by a loose or corroded battery cable, a failing alternator (which charges the battery), or another electrical fault in the charging circuit. You might notice symptoms like dimming headlights, a fading clock display, or, in more severe cases, the car might not start at all.
What To Do: A battery alert light suggests that your car’s electrical system is not being properly charged, and eventually, your battery will be depleted, potentially leaving you stranded. It’s advisable to have your vehicle’s charging system inspected by a mechanic as soon as possible. They can diagnose the issue, whether it’s a battery problem, alternator issue, or wiring fault. Addressing this promptly can prevent you from being stranded with a dead battery. Many auto service centers offer battery testing and replacement services.
Read: Why Won’t My Car Start? Troubleshooting the Electrical System
9. Low Fuel Indicator Light
What It Means: This yellow or amber light, typically shaped like a fuel pump, is the low fuel indicator. It’s a straightforward symbol that simply means your vehicle is running low on gasoline or diesel fuel and needs to be refueled soon.
What To Do: When this light comes on, it’s time to visit a gas station. While you usually have some reserve fuel left, it’s best not to push your luck, especially if you are unfamiliar with the area or anticipate traffic delays. Running out of fuel can leave you stranded and can potentially damage some vehicle components.
Bonus Tip: Most modern cars have a small arrow or triangle next to the fuel pump icon on the fuel gauge. This helpful arrow indicates which side of your vehicle the fuel filler door is located on, making refueling more convenient at unfamiliar gas stations.
10. Automatic Shift Lock or Engine Start Indicator Light
What It Means: This symbol, which can vary but often depicts a foot pressing a brake pedal or a key symbol, is related to starting your car or shifting out of “Park” in vehicles with automatic transmissions. It usually indicates that you are attempting to start the engine or shift gears without properly pressing the brake pedal. Modern vehicles have safety features that require the brake pedal to be depressed before starting or shifting from “Park” to prevent accidental movement.
What To Do: If you see this light, ensure that your foot is firmly pressing the brake pedal. Then, attempt to start the ignition or shift gears as desired. Once you correctly engage the brake, the light should disappear, and you should be able to start or shift your vehicle.
11. Seat Belt Reminder Light
What It Means: This red light, usually showing a person wearing a seatbelt, is a simple reminder to buckle up. It’s a safety feature designed to encourage seatbelt use for both the driver and passengers. It is often accompanied by an audible chime or buzzing sound.
What To Do: Fasten your seatbelt! Seatbelts are a critical safety feature, and wearing them significantly reduces the risk of serious injuries in the event of a car accident. According to the CDC, seat belts reduce serious crash-related injuries and deaths by about 50%. Make it a habit to buckle up every time you get into a vehicle.
12. Airbag Indicator Light
What It Means: The airbag warning light, often showing the word “AIRBAG” or a symbol of a person sitting with a deployed airbag, is a serious safety warning. It indicates a problem with one or more components of your vehicle’s airbag system. This could be an issue with the airbags themselves, the sensors, the wiring, or the airbag control module.
What To Do: A malfunctioning airbag system may not deploy properly in a collision, compromising your safety. It’s crucial to have your vehicle’s airbag system inspected and repaired immediately by a qualified technician. Do not ignore this warning light. Airbags are a vital safety feature, and ensuring they are functioning correctly is paramount.
13. Security Indicator Light
What It Means: This light, often shaped like a padlock or a car key symbol, relates to your vehicle’s anti-theft or security system. The behavior of the light can indicate different states of the security system:
- Blinking Steadily: When the security system is armed and active, this light will typically blink steadily, indicating normal operation of the anti-theft system.
- Solid and Car Won’t Start: If the light is solid and your car refuses to start, it usually means the vehicle’s immobilizer system has been activated due to a perceived security threat or a system malfunction. This system prevents the engine from starting to deter theft.
- Solid and Car Running Normally: If the light is solid while the car is running normally, it may indicate a malfunction within the security system itself, meaning the anti-theft system might not be working correctly.
What To Do: If your vehicle is immobilized due to the security system, consult your owner’s manual for instructions on how to deactivate or reset the system. This might involve using a specific key sequence or entering a security code. If the security system seems to be malfunctioning (solid light while driving), it’s advisable to have it checked by a mechanic to ensure your vehicle’s security system is functioning as intended.
14. Fog Lamp Indicator Light
What It Means: This green light, usually depicting a headlight symbol with a wavy line through the beam, indicates that your fog lights are switched on. Fog lights are designed to provide improved visibility in foggy conditions by projecting a wide, low beam of light that cuts through the fog.
What To Do: Fog lights should only be used when visibility is significantly reduced due to fog, heavy rain, or snow, typically when visibility is less than 100 yards. Using fog lights in clear weather can actually reduce visibility for other drivers and can be considered improper use. Remember to turn off your fog lights when visibility improves and they are no longer needed.
15. Washer Fluid Indicator Light
What It Means: This yellow light, often showing a windshield symbol with a wavy line representing fluid being sprayed, indicates that your windshield washer fluid reservoir is low and needs to be refilled.
What To Do: Replenish your windshield washer fluid as soon as it is convenient. Washer fluid is essential for keeping your windshield clean and clear, especially in dirty or snowy conditions, ensuring good visibility for safe driving. Keeping the reservoir filled is a simple but important part of vehicle maintenance.
16. Brake Warning Light
What It Means: The brake warning light can appear in a couple of forms: either the word “BRAKE” in red or a red symbol of an exclamation point inside a circle. This light can indicate two primary situations:
- Parking Brake Engaged: Most commonly, this light is illuminated when the parking brake (emergency brake) is engaged.
- Braking System Problem: If the light remains on even after disengaging the parking brake, it signals a potential problem with your vehicle’s braking system. This could be due to low brake fluid, worn brake pads, or other issues within the braking system.
What To Do: First, if the brake warning light is on, ensure that your parking brake is fully disengaged. Sometimes, it might not be fully released, causing the light to stay on. Try setting and releasing the parking brake firmly. If the light remains illuminated after confirming the parking brake is off, it indicates a potential braking system malfunction. In this case, it’s crucial to have your vehicle inspected immediately. Brake problems can severely compromise your safety. If you suspect a braking system issue, it’s best to have your car towed to a qualified repair shop rather than driving it.
17. Lane Departure Warning Light
What It Means: This green or yellow light, often depicting lane markings with a car drifting out of the lane, is related to the lane departure warning system, a safety feature found in many newer vehicles. When activated, this system monitors your vehicle’s position within lane markings on the road. The light illuminates, often accompanied by a beep or vibration, when the system detects that your vehicle is unintentionally drifting out of its lane without using a turn signal.
What To Do: If the lane departure warning light activates, it means the system has detected lane drifting. Check your steering and correct your vehicle’s position within the lane if necessary. The system is designed to alert you to unintentional lane departures, which can happen due to drowsiness or distraction. Keep in mind that the system may also activate when you intentionally change lanes without using your turn signal.
18. Transmission Temperature Warning Light
What It Means: This red light, sometimes depicted as a thermometer gear symbol, is the transmission temperature warning light. It indicates that your vehicle’s transmission is overheating. Overheating can be caused by various factors, including low transmission fluid, worn transmission components, heavy towing, or demanding driving conditions.
What To Do: An overheating transmission can lead to serious damage and costly repairs. If this light illuminates, pull over to a safe location as soon as possible and turn off the engine to allow the transmission to cool down. Wait for a significant period before attempting to drive again. Check your owner’s manual for any specific recommendations regarding transmission overheating. If the light persists or reappears quickly, it’s best to have your vehicle towed to a repair shop to diagnose and address the cause of the overheating. Driving with an overheating transmission can lead to permanent damage.
Experiencing Car Trouble?
Dashboard warning lights are your car’s way of communicating, and understanding them is key to responsible car ownership and safety. If you are unsure about the meaning of a car icon or if you are experiencing any car trouble indicated by a warning light, don’t hesitate to seek professional help.
Whether you need routine maintenance like an oil change or require diagnostics and repair for a more complex issue, Virginia Tire & Auto’s expert technicians are ready to assist. We can accurately diagnose the cause of any warning light and provide the necessary repairs to get you back on the road safely and confidently. Schedule your visit at one of our convenient locations today!
