How to Deal with a Lit Car Warning Light?
2 Answers
There are various types of warning lights on a car's dashboard, including the tire pressure warning light, engine coolant temperature warning light, engine emission fault warning light, battery warning light, brake warning light, seatbelt warning light, ABS warning light, and oil pressure warning light. Additional information is as follows: 1. Tire Pressure Warning Light Lit: This indicates an issue with the car's tire pressure, which could be due to a circuit fault or a tire leak. 2. Engine Coolant Temperature Warning Light Lit: This indicates that the engine coolant temperature is too high or the coolant level is too low. The engine is operating abnormally. Normally, the car's coolant temperature should be maintained around 90°C. The coolant level should be above the MIN mark. 3. Engine Emission Fault Warning Light Lit: This indicates a fault in the engine. There are many potential causes for engine faults, which need to be checked one by one. 4. Battery Warning Light Lit: If the light is yellow, it indicates a battery fault, which could be due to a low battery or circuit issues. If the light is red, it represents a charging system fault, most commonly caused by a damaged alternator.
The other day, a yellow engine light suddenly popped up on my car's dashboard, so I immediately pulled over and turned off the engine to check. First, I confirmed the oil level and coolant temperature gauge were normal. Since there were no strange noises or oil leaks, I drove home slowly. The next day, I took it to a repair shop where they used a computer to read the fault code, which turned out to be an oxygen sensor issue. The technician said there are many reasons for this light to come on—engine, emission system, or sensors could all be the cause. The key is whether it's a yellow or red light: with a yellow light, you can still drive slowly to get it fixed, but a red light means you must stop immediately and call for assistance. It’s a good idea to keep a simple OBD scanner handy for checking codes yourself to have some peace of mind.
