You’ve just had a yellow warning light pop up on your car’s dash but you’re unsure what it means? This article will give you clarity on the meaning of all the different lights which may pop up for different cars like Volkswagen‘s, BMW‘s, Audi‘s, Kia‘s, Dacia‘s as well as many others. This is a great guide for car owners in Ireland and the UK.
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Why Do Dashboard Warning Lights Matter?
Warning lights are a way of your car to tell you that something needs attention. Some are more serious than others. While you may be able to continue driving on a yellow warning light, it is advised that you get your car seen by a mechanic or competent person as soon as possible to prevent any damage to your car.
Ignoring warnings could mean a minor issue turns into a costly or even dangerous repair. Red warning lights are extremely serious and you should stop driving immediately if you have one pop up on your dashboard.
Now, let’s look at the most common dashboard warning lights and what each one means.
Common Dashboard Warning Lights
1. Check Engine
The check engine light – often displayed as an engine icon or simply “CHECK ENGINE” – is the one that can leave drivers most unsettled. It’s a broad warning that can indicate anything from a loose fuel cap to a more serious engine issue. If the light comes on and the car seems to drive as usual, it’s a good idea to visit a mechanic soon for a diagnostic test. However, if the light is flashing and the car begins to drive erratically, pull over and call for assistance, as continuing to drive could damage your engine.
2. Battery Warning
This icon, resembling a battery, typically signals an issue with the battery, alternator, or another electrical component. If your battery light stays on, it’s worth having the battery and electrical system checked, even if the car seems to start and run fine. Your battery may just need replacing.
3. Coolant Temperature
This symbol, often shown as a thermometer submerged in liquid, indicates that your engine is overheating. This could be due to low coolant levels, a faulty radiator, or a leaking hose. Driving with an overheated engine can lead to serious damage, so stop and address this issue as soon as possible. If you need roadside assistance or your car towed, contact us on 089 432 4139.
4. Transmission Temperature
If this light appears, your transmission is overheating, which could be due to heavy towing, low transmission fluid, or general wear on the transmission components. Ignoring this could lead to expensive repairs.
5. Oil Pressure Warning
The oil pressure light, shown as an oil can, may simply mean your oil levels are low. However, it could also signal a leak or another issue with the engine’s oil system. Checking and topping up oil levels might turn off the light, but if it persists, get a professional inspection.
6. Tyre Pressure Warning Light
The tyre pressure icon looks like an exclamation point inside a partially deflated tyre. Driving on low-pressure tyres can be unsafe, so pull over and check if the light stays on. Many modern cars have inbuilt monitors that show the exact pressure for each tyre, which helps spot any imbalances or leaks.
7. Brake System Warning
This light may come on if the parking brake is engaged, but it can also mean there’s an issue with the brake system, such as worn brake pads or low brake fluid. Brake issues should be checked immediately, as effective braking is essential for safety.
8. Traction Control and Stability Control
This symbol, which looks like a car with curving skid lines beneath it, lights up when your car’s traction control or stability control is active. If this light appears unexpectedly on a dry road, it may indicate a fault in the system.
9. Airbag Warning
When the airbag light stays on after starting the car, it could mean there’s a problem with one of the airbags. This doesn’t prevent driving but should be checked for safety in case of an accident.
10. Lamp Out
This icon, which may look like a sun or bulb, means one of your car’s external lights is out. Check your headlights, taillights, and indicators to avoid any visibility or safety issues.
11. Basic Warnings: Washer Fluid, Door Open, Low Fuel
- Washer Fluid: Shown as a windshield with a spray of water, this indicates low washer fluid – useful when your windscreen is coated with dust or bugs.
- Door Open: Often displayed as an overhead view of the car with one or more doors open.
- Low Fuel: Shaped like a fuel pump, this light means it’s time to fill up. A handy arrow often points to which side of the car has the fuel flap.
Making Sense of Dashboard Warnings
Even car gurus can struggle with understanding these warnings. Many people never look at their car manual, which is full of useful information on what different lights mean and how to address them.
Dashboard warning lights are not all created equal – some indicate minor issues, while others mean you should stop driving and get help immediately. Understanding each warning sign will help you respond appropriately, keep your car in top condition, and stay safe on the road.
