The warning lights on your dashboard are not there to annoy you. Each one has a purpose, and some require you to stop immediately while others allow you to continue to a workshop. The problem is that most drivers do not know the difference. Here is a straightforward guide.
Red Lights - Stop IMMEDIATELY
Red on the dashboard means urgent. Do not ignore these lights for even a minute.
Oil pressure light (oil can icon) - oil pressure has dropped. The engine is running without proper lubrication and can seize within minutes. Shut the engine off as soon as it is safe and check the oil level. If the level is fine but the light stays on, do not start the engine again. Call a tow truck.
Temperature light (thermometer icon) - the engine is overheating. Continuing to drive can warp the cylinder head or blow the head gasket. Pull over, turn off the engine, and let it cool down. Do not open the coolant cap while it is hot.
Brake system light - this can mean low brake fluid or a problem with the braking system. Check the fluid level. If it is low or if the brake pedal goes too deep, do not drive. Call for assistance.
Battery light - the alternator is not charging. The car will run until the battery dies, but that could be soon. Turn off all consumers (air conditioning, radio, heated windows) and drive to the nearest workshop if it is close.
Yellow Lights - Drive Carefully to the Workshop
Yellow means a warning, but not an emergency stop.
Check engine (engine light) - if it is on steady, it is usually not urgent. The engine may have an emissions issue, a sensor problem, or something similar. You can drive to the workshop, but do not put it off. If it is flashing, that is more serious. Reduce throttle and get a diagnostic scan as soon as possible.
ABS light - the brakes still work, but the anti-lock system does not. On dry roads you will not notice a difference, but in rain or snow you do not have ABS protection. Drive moderately and schedule an inspection.
Airbag light - the airbag system has a fault. The car is safe to drive, but in the event of a crash, the airbag may not deploy. This needs fixing, but it is not a reason to stop immediately.
ESP/ESC light - if it is on steady, the stability control system is off or malfunctioning. Drive more carefully, especially in the rain.
Informational Lights - No Panic Needed
Some lights are purely informational and do not require any urgent action.
Fuel light - you have roughly 50-80 km left, depending on the car. Find a fuel station.
Washer fluid light - top it up when you get a chance.
Service interval light - the car is telling you it is time for a service. Not urgent, but do not put it off for too long.
A Simple Rule for Making the Decision
If you do not know what a light means, ask yourself: what colour is it?
- Red - pull over as soon as it is safe, turn off the engine, call the workshop
- Yellow - continue carefully, schedule a check within two to three days
- Green or blue - informational, everything is fine
This rule covers about 90% of situations. But if you notice any change in how the car behaves along with a warning light, such as an unusual sound, loss of power, or a burning smell, stop regardless of the colour.
Our Advice
If a warning light comes on and you are not sure what it means, feel free to call us. We can tell you over the phone whether it is safe to keep driving or whether you need to stop right away. It is better to ask than to guess while you are behind the wheel.