A Guide to Dashboard Warning Lights
The profound effects of extreme cold can be observed all around us as winter settles in in earnest. Animals change their behavior and appearance, hoarding food, growing thick winter coats, and even hibernating or brumating. Plants drop their leaves to conserve moisture. People bundle up, turn up their heating systems, or perhaps even struggle with seasonal depression. But did you know that these rapid and profound swings in temperature can also affect machinery? While it’s often nearly imperceptible, molecular physics teaches us that objects shrink in the cold, as molecules slow down. This is just one facet of the knock-on effects of the cold. With a new year dawning and the bitter cold setting in, we thought now would be a good time to remind ourselves of the regular car maintenance you may be due for in 2026, as well as a dashboard warning lights guide.
The Tire Light: A Cold Weather Tradition
Do you notice that your tire pressure warning indicator, generally symbolized by an exclamation mark inside a semicircle with a flat, treaded bottom, comes on in cold weather? This is fascinating case of applied physics. As we discussed, things shrink in the cold. This includes the air molecules in your tires. They contract, and therefore lose about 1 PSI per 10 degrees Fahrenheit. Once they fall below a certain PSI threshold, your tire light comes on. Luckly, this is a simple fix, simply locate a service station with an air hose, and top up your tires. In minor cases, you may even alleviate the problem by driving the car. The warming of the tires will cause the air within to expand and turn the warning light off.
Common Dashboard Warning Lights and What They Mean
Millions of Americans per year will modify or otherwise work on their cars this year. Making a simple fix in response to a warning light can be a great way to save money and get to know your vehicle better. But not all fixes are simple, if you rely on your car to commute to work each day and require it to function on demand, it may be best to leave its maintenance to the professionals. This short list of common warning lights and their possible causes will offer both DIY and professional solutions for gearheads of all knowledge levels.
Check Engine Light
What it indicates:
A wide range of issues, from a loose gas cap to engine or emissions problems.
DIY or mechanic?
- Possibly DIY: A loose or damaged gas cap is a common cause and easy to fix.
- Usually a mechanic: If the light stays on or flashes, the issue may involve sensors, misfires, or engine components. A diagnostic scan (often free at auto parts stores) can point you in the right direction.
Battery / Charging System Light
What it indicates:
A problem with the vehicle’s charging system, such as a failing battery, alternator, or serpentine belt.
DIY or mechanic?
- Auto parts store: Battery testing and replacement can often be handled quickly.
- Mechanic: Alternator or belt issues usually require professional repair.
Oil Pressure Warning Light
What it indicates:
Low oil pressure, which can lead to severe engine damage if ignored.
DIY or mechanic?
- Check at home: Verify oil level and add oil if low.
- Mechanic (urgent): If the light remains on, it could indicate oil pump failure or internal engine problems. Do not continue driving.
Engine Temperature Warning Light
What it indicates:
The engine is overheating, often due to coolant loss, radiator issues, or a faulty thermostat.
DIY or mechanic?
- At home: Check coolant level once the engine cools completely.
- Mechanic: Persistent overheating usually requires professional diagnosis to prevent engine damage.
Brake Warning Light
What it indicates:
Engaged parking brake, low brake fluid, or a braking system issue.
DIY or mechanic?
- At home: Confirm the parking brake is fully released and check brake fluid level.
- Mechanic: If the light stays on, brake system issues should be addressed immediately for safety reasons.
ABS (Anti-Lock Braking System) Light
What it indicates:
A malfunction in the ABS system, which helps prevent wheel lock-up during hard braking.
DIY or mechanic?
- Mechanic: While your standard brakes may still function, ABS problems typically involve sensors or control modules and require professional repair.
Airbag / SRS Warning Light
What it indicates:
A problem with the airbag or seatbelt restraint system.
DIY or mechanic?
- Mechanic only: Airbag systems are complex and safety-critical. This issue should always be evaluated by a professional.
Power Steering Warning Light
What it indicates:
Low power steering fluid (hydraulic systems) or an electrical fault (electric power steering).
DIY or mechanic?
- At home: Some vehicles allow you to check and refill power steering fluid.
- Mechanic: Electrical steering issues or persistent warnings usually require professional service.
Traction Control / Stability Control Light
What it indicates:
The system is either actively engaged (temporary flashing) or experiencing a fault.
DIY or mechanic?
- Monitor: If the light turns off after driving, it may simply indicate system activation.
- Mechanic: A steady light often points to sensor or system failures.
When to Take Warning Lights Seriously
If dashboard warning lights are red, flashing, or accompanied by unusual noises, vibrations, or loss of vehicle performance, it’s best to stop driving and seek professional help. Ignoring dashboard warnings can turn a manageable repair into a major safety risk—or a far more expensive problem.
How Malloy Law Can Help
If you or a loved one has been injured in a car accident caused by another party’s negligence, Malloy Law is here to help. Our experienced and diverse team of attorneys is standing by to evaluate your case free of charge and plot a path to win maximum compensation for your injuries, lost wages, and trauma. Don’t wait, contact Malloy law today and let’s win your case.