We’ve all experienced that moment of mild panic: you’re driving along, perhaps enjoying your favorite playlist, when suddenly a light illuminates on your car’s dashboard. A symbol you may or may not recognize appears, and you’re left wondering, “What does that light on my car mean?” Is it serious? Do I need to pull over immediately?
Understanding the symbols on your car’s dashboard is crucial for every driver. While some lights are straightforward, indicating activated features, others serve as vital warning signals about your vehicle’s health. Knowing the difference can save you from potential breakdowns, costly repairs, and even dangerous situations.
Understanding the Types of Lights on Your Car Dashboard
Not every light on your dashboard is cause for alarm. These lights are designed to communicate various aspects of your vehicle’s operation, from engaged features to potential problems. It’s helpful to categorize them to better understand their significance.
Dashboard lights can generally be grouped based on their function and color:
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Indicator Lights (Green or Blue): These lights are your car’s way of saying, “Everything is okay, and this system is currently in use.” Green or blue lights typically indicate that a feature is active, such as your headlights, cruise control, or turn signals. They are purely informational and do not signal a problem.
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Warning Lights (Yellow or Amber): These lights are more serious and suggest that something needs attention soon. Yellow or amber lights often indicate a less urgent issue, such as low fuel, low tire pressure, or a service reminder. While they don’t usually require immediate action, ignoring them can lead to more significant problems down the road.
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Critical Warning Lights (Red): Red lights are the most urgent and demand immediate attention. They signal a serious problem that could cause damage to your vehicle or compromise your safety. Red lights can indicate issues like engine overheating, low oil pressure, or brake system malfunctions. If a red light appears, it’s crucial to safely pull over as soon as possible and investigate the issue.
Remember, the colors are a general guide, but the specific symbol is what truly matters. Always consult your vehicle’s owner’s manual for a precise explanation of each light. 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 the lights should turn off within a few seconds if everything is functioning correctly.
18 Essential Warning Lights You Might See on Your Car Dashboard
To help you navigate the sometimes confusing world of car dashboard lights, we’ve compiled a list of 18 common warning symbols. Understanding these “Lights On Car” signals can empower you to take the right action and ensure your vehicle’s health and your safety on the road.
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
Oil Pressure Warning Light symbol on a car dashboard, resembling an old-fashioned oil can.
What It Means: This symbol, often resembling a classic oil can, is a critical “lights on car” warning related to your engine’s lubrication system. It indicates that your car is experiencing low oil pressure. This could be due to genuinely low oil levels or a malfunction in your oil pump, preventing sufficient oil circulation to critical engine components. Some vehicles might display the word “OIL” instead of this symbol.
What To Do: Engine lubrication is paramount for preventing severe engine damage. This warning light demands immediate attention. Safely pull over to the side of the road as soon as possible, turn off your engine, and check your oil level. Examine the area around your engine for any visible oil leaks. Then, use your car’s dipstick to accurately check the oil level.
If the dipstick shows low oil, adding oil might resolve the issue and turn off the light. However, if the oil level is adequate, but the engine sounds unusually noisy, it could indicate an oil pump problem. If the oil level is fine and the engine runs smoothly, a faulty oil pressure sensor might be the culprit. Regardless of the specific cause, it’s essential to have your vehicle inspected by a qualified mechanic promptly to diagnose and address the low oil pressure issue. Ignoring this “lights on car” warning can lead to significant and expensive engine damage.
Read: How Long Can You Go Without an Oil Change?
2. Tire Pressure Warning Light
What It Means: Known as the Tire Pressure Monitoring System (TPMS) light, this symbol, often shaped like a horseshoe with an exclamation point, alerts you to issues with your tire pressure or the TPMS itself.
A solid TPMS light means that one or more of your tires are significantly under-inflated or, less commonly, over-inflated. A flashing TPMS light, especially if it flashes for 60 to 90 seconds upon starting your vehicle and then remains illuminated, suggests a problem with the TPMS sensors themselves, even if your tire pressures are currently correct.
What To Do: Driving with improper tire pressure is not only unsafe but can also lead to premature tire wear and reduced fuel efficiency. It’s recommended to stop at your earliest convenience to check and adjust your tire pressure to the recommended levels, usually found on a sticker inside your driver’s side doorjamb or in your owner’s manual.
If you happen to be near a Virginia Tire & Auto location when this “lights on car” warning appears, take advantage of their free air service available at all stores. Their team can also assist with tire repairs or replacements if needed. Furthermore, they can inspect your TPMS sensors for malfunctions and provide repair quotes. While a malfunctioning TPMS sensor won’t directly harm your tires, it will prevent the system from properly alerting you to future low tire pressure situations, compromising safety.
Read: My TPMS Light Is On: What Does It Mean?
3. Engine Temperature Warning Light
Engine Temperature Warning Light symbol on a car dashboard, depicting a thermometer in coolant.
What It Means: This “lights on car” symbol, often resembling a thermometer submerged in liquid waves, indicates that your engine is overheating. This is most frequently related to issues with your engine coolant (antifreeze), but overheating can stem from various underlying causes within the cooling system.
What To Do: Your initial response should be to try and reduce engine heat. First, turn off your air conditioning and turn on your heater to draw heat away from the engine and into the passenger compartment. If the warning light persists after a few minutes, safely pull over and turn off the engine completely. Allow the engine to cool down for at least 15 minutes before attempting anything further. Crucially, do not open the hood while the engine is hot. Opening the hood prematurely can result in burns from escaping steam or hot coolant.
While waiting for your engine to cool, use this time to plan your next steps. Contacting a roadside assistance service is a good option to request coolant top-off or arrange a tow to a qualified repair shop. Driving an overheating engine can cause severe and permanent damage.
(Virginia Tire & Auto offers complimentary Roadside Assistance coverage for 365 days, up to $200, with all car care services.)
Read: What Happens When a Car Overheats?
4. Traction Control Light
What It Means: This symbol, often showing a car with squiggly lines underneath, is not a warning light in the traditional sense. It’s an indicator light that shows your vehicle’s traction control system is actively engaged. The traction control system works in conjunction with your anti-lock braking system (ABS) to detect if a wheel is losing traction and spinning faster than others. If wheel slippage is detected, the system automatically applies braking force to the slipping wheel(s) and/or reduces engine power to help regain traction. This system is particularly useful when driving in slippery conditions like rain, snow, or ice.
What To Do: When this “lights on car” indicator is illuminated, it means the traction control system is doing its job. Simply continue driving cautiously, being mindful of potentially slippery road conditions. There’s no need to take immediate action as this light indicates the system is working as intended to enhance your control in challenging driving situations.
5. Anti-lock Braking System (ABS) Warning Light
ABS Warning Light symbol on a car dashboard, displaying "ABS" within a circle.
What It Means: The ABS warning light, usually displaying the letters “ABS” or a symbol with “ABS,” indicates a malfunction within your car’s Anti-lock Braking System. ABS is a crucial safety feature that prevents your wheels from locking up during hard braking, especially on slick surfaces, allowing you to maintain steering control. When this “lights on car” warning is lit, it signifies that the ABS system is not functioning correctly.
What To Do: Because ABS is a vital safety system, it’s crucial to have the issue diagnosed and repaired by a qualified mechanic as soon as possible. While your regular brakes will likely still function, the anti-lock function will be disabled. This means in emergency braking situations, particularly on slippery roads, your wheels could lock up, potentially leading to loss of control. Schedule a service appointment to have your ABS system inspected and repaired to ensure your vehicle’s safety systems are fully operational.
[Read: How Does the Anti-Lock Braking System Work?](https://vatire.com/car-maintenance-tips/how-does-the-anti-lock braking-system-work/)
6. Traction Control Malfunction Light
What It Means: This “lights on car” warning light, often similar to the traction control indicator but sometimes with the word “OFF” or “!” symbol, signals a problem within your vehicle’s traction control system. It could indicate a faulty or damaged sensor, a problem with the control module, or another malfunction within the system. In some vehicles, the same control module manages both the ABS and traction control systems, so this light may sometimes illuminate alongside the ABS warning light.
What To Do: While a traction control malfunction might not impact your everyday driving under normal conditions, it’s important to have it checked out promptly. The traction control system is designed to enhance safety in challenging conditions like rain or snow. Driving with a malfunctioning system means you might lose this safety net when you need it most. Schedule a service appointment to diagnose and repair the traction control system to ensure your vehicle is prepared for all driving conditions.
7. Engine Warning Light (Check Engine Light)
Check Engine Light symbol on a car dashboard, resembling an engine outline.
What It Means: The “check engine light,” often depicted as an engine outline or sometimes displaying the words “CHECK ENGINE,” is one of the most ambiguous “lights on car.” It can illuminate for a wide range of reasons, from minor to severe. A common minor cause is a loose, missing, or cracked gas cap, which can cause fuel vapor leaks. However, it can also signal serious engine issues like low oil pressure or overheating.
What To Do: The appropriate action depends on the behavior of the check engine light.
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Solid Check Engine Light: If the light is on but steady, and you don’t notice any significant changes in how your car drives (no unusual noises, smells, or performance issues), you can typically continue driving for a short distance, ideally to your home or a trusted repair shop like Virginia Tire & Auto. However, it’s crucial to get it checked as soon as possible to prevent potential minor issues from escalating into major repairs.
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Flashing Check Engine Light: A flashing check engine light is a more serious warning and demands immediate attention. In most vehicles, a flashing light indicates a severe problem that could cause significant engine damage if ignored. If your check engine light is flashing, stop driving as soon as it is safe to do so and have your vehicle towed to a repair shop for diagnosis.
Regardless of whether the check engine light is solid or flashing, it should never be ignored long-term. Prompt diagnosis and repair are essential to maintain your engine’s health and prevent costly future problems.
Read: Is It Safe to Drive Your Car With the Check Engine Light On?
8. Battery Alert Light
What It Means: This “lights on car” symbol, usually shaped like a battery with “+” and “-” terminals, indicates a problem within your vehicle’s charging system. The issue could stem from various components, including loose or corroded battery cables, a failing alternator, or other electrical system faults. You might notice symptoms like dimming headlights, a fading clock display, or, in more severe cases, difficulty starting your car or the car not starting at all.
What To Do: Electrical system problems can leave you stranded. It’s advisable to have your vehicle’s battery and charging system inspected by automotive experts. Professionals can accurately diagnose battery-related or broader electrical issues. If a battery replacement is necessary, consider quality options like Interstate Batteries, known for their reliability. Don’t delay getting this “lights on car” warning checked, as you might otherwise face the inconvenience of needing to jump-start your car just to get it to a repair shop.
Read: Why Won’t My Car Start? Troubleshooting the Electrical System
9. Low Fuel Indicator Light
Low Fuel Indicator Light symbol on a car dashboard, depicting a fuel pump.
What It Means: The low fuel indicator light, typically a symbol of a fuel pump, is a familiar “lights on car” reminder that your vehicle is running low on fuel.
What To Do: When this light illuminates, it’s time to refuel soon. While you might have some driving range left, it’s best not to push your luck. Unexpected traffic delays or detours can quickly deplete your remaining fuel. Locate the nearest gas station and fill up your tank.
Bonus Tip: Most modern vehicles have a helpful feature: a small triangle-shaped arrow next to the fuel pump icon on your fuel gauge. This arrow indicates which side of your car the fuel tank door is located, saving you from pulling up to the pump on the wrong side!
10. Automatic Shift Lock or Engine Start Indicator Light
What It Means: This “lights on car” symbol, often showing a foot on a brake pedal or the word “SHIFT LOCK,” typically appears when you are attempting to shift out of “Park” or start your engine without properly engaging the brake pedal. The automatic shift lock mechanism is a safety feature designed to prevent unintentional movement of the vehicle.
What To Do: The solution is simple: ensure your foot is firmly pressed on the brake pedal. Then, attempt to shift gears or start the ignition again. The light should turn off, and you should be able to proceed normally.
11. Seat Belt Reminder Light
Seat Belt Reminder Light symbol on a car dashboard, depicting a seated person with a seatbelt.
What It Means: The seat belt reminder light, usually showing a person wearing a seat belt, is a straightforward “lights on car” reminder for you or your passengers to buckle up. It’s often accompanied by an audible chime or dinging sound that repeats until the seat belts are fastened.
What To Do: Fasten your seat belt! Seat belts are a primary safety feature in vehicles. According to the CDC, seat belts significantly reduce the risk of serious injuries in car crashes, decreasing serious crash-related injuries by approximately 50%. Buckling up is a simple yet critical step for your safety and the safety of your passengers.
12. Airbag Indicator Light
What It Means: The airbag warning light, typically displaying the word “AIRBAG” or a symbol of a person with an inflated airbag, is a serious “lights on car” warning. It signals a malfunction within your vehicle’s airbag system. This could involve issues with one or more airbags, the airbag sensors, or the overall airbag control system.
What To Do: A malfunctioning airbag system compromises a critical safety feature of your vehicle. It is imperative to have your car inspected by a qualified mechanic immediately. Airbags are designed to deploy in the event of a collision to protect occupants. If the warning light is on, there’s no guarantee that the airbags will function correctly in a crash. Don’t delay in getting this issue resolved to ensure your safety in the event of an accident.
13. Security Indicator Light
Security Indicator Light symbol on a car dashboard, depicting a key or padlock.
What It Means: The security indicator light, often represented by a padlock or a key symbol, relates to your vehicle’s anti-theft system. Its behavior can indicate different states of the system:
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Blinking Light: A steadily blinking security light usually means the anti-theft system is armed and active. This is normal when the car is locked and parked.
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Solid Light, Car Won’t Start: If the security light is solid and your car refuses to start, it indicates that the vehicle’s immobilizer system has been activated. This could be due to a perceived security threat or a system malfunction.
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Solid Light, Car Runs Normally: If the security light is solid while the car is running normally, it suggests a malfunction within the security system itself. In this case, the system might not be functioning correctly and needs attention.
What To Do: If your vehicle is immobilized due to the security system, consult your owner’s manual for specific instructions on how to deactivate or reset the system. This might involve using your key fob in a particular way or entering a security code. If the security system appears to be malfunctioning (solid light while driving), it’s advisable to have it inspected and repaired to ensure its proper operation and prevent potential future issues.
14. Fog Lamp Indicator Light
What It Means: This indicator light, often showing a headlight symbol with a wavy line through the beam, simply indicates that your fog lights are currently switched on.
What To Do: Fog lights are designed for use in conditions of reduced visibility, such as fog, heavy rain, or snow. They should only be used when visibility is significantly impaired (typically less than 100 yards). Using fog lights unnecessarily in clear conditions can actually reduce visibility for other drivers by creating glare. Remember to turn off your fog lights when visibility improves to avoid inconveniencing other motorists.
15. Washer Fluid Indicator Light
Washer Fluid Indicator Light symbol on a car dashboard, depicting windshield wipers spraying fluid.
What It Means: The washer fluid indicator light, usually showing a windshield symbol with spray lines, is a straightforward “lights on car” signal that your windshield washer fluid reservoir is running low.
What To Do: Replenish your windshield washer fluid as soon as it’s convenient. Maintaining adequate washer fluid is essential for keeping your windshield clean and clear, especially in inclement weather or when encountering road grime. Regularly check and refill your washer fluid reservoir to ensure good visibility in all driving conditions.
16. Brake Warning Light
What It Means: The brake warning light, often displaying the word “BRAKE” in red or an exclamation point within a circle, is a critical “lights on car” warning with two primary meanings:
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Parking Brake Engaged: The most common reason for this light is that your parking brake (emergency brake) is engaged.
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Braking System Problem: If the light remains on even after disengaging the parking brake, it indicates a potential problem within your braking system itself. This could be due to low brake fluid, worn brake pads, or other brake system malfunctions.
What To Do: First, if the brake warning light is on, immediately check if your parking brake is engaged. Ensure it is fully released. If the light persists after releasing the parking brake, it’s crucial to have your vehicle towed to a qualified repair shop, like Virginia Tire & Auto, for immediate brake system inspection. Driving with a brake system problem is extremely dangerous and should be avoided.
17. Lane Departure Warning Light
Lane Departure Warning Light symbol on a car dashboard, depicting a car drifting out of lane lines.
What It Means: The lane departure warning light, often showing a car drifting out of lane markings, is related to a modern safety feature found in many newer vehicles. It illuminates when the system detects that your vehicle is unintentionally drifting out of its lane. This system is designed to help prevent accidents caused by driver distraction or fatigue.
What To Do: If the lane departure warning light activates, it’s a prompt to correct your steering and ensure you are staying within your lane markings. The system might also trigger an audible warning (beeping or vibration) to alert you. Be aware that the light may also activate intentionally when you are purposefully changing lanes without using your turn signal. This “lights on car” indicator is a helpful reminder to maintain lane discipline and enhance driving safety.
18. Transmission Temperature Warning Light
What It Means: The transmission temperature warning light, often symbolized by a thermometer in a gear or a gear outline with an exclamation point, indicates that your vehicle’s transmission is overheating. This can be caused by various factors, including low transmission fluid levels, worn transmission components, demanding driving conditions like heavy towing, or other transmission-related issues.
What To Do: Transmission overheating can lead to serious and expensive transmission damage. If this “lights on car” warning appears, safely pull over and turn off your vehicle immediately to allow the transmission to cool down. Wait for a significant period before attempting to drive again. It’s strongly recommended to have your vehicle inspected by a transmission specialist as soon as possible to diagnose the cause of the overheating and prevent further damage. If the light persists or reappears quickly, it’s best to have your vehicle towed to a repair shop to avoid potentially catastrophic transmission failure.
Experiencing Car Trouble? We Can Help.
Dashboard warning lights are your car’s way of communicating potential issues. Whether it’s a simple indicator light or a critical warning, understanding these “lights on car” signals is crucial for responsible vehicle ownership and safety. If you encounter any of these warning lights or experience other car troubles, don’t hesitate to bring your vehicle to Virginia Tire & Auto. Our team of expert technicians is equipped to diagnose and repair a wide range of automotive issues, from routine maintenance like oil changes to complex system repairs. Schedule your visit at one of our conveniently located Virginia Tire & Auto centers today!
