What Causes the Triangle Exclamation Mark in a Car?
2 Answers
Triangle exclamation mark is a general fault indicator light, which may be caused by overheating of the dry dual-clutch transmission clutch, intervention or failure of the fuel cut-off system, parking sensor failure, exterior light bulb failure, engine oil pressure sensor failure, traction control system warning or failure, etc. The method to deal with the triangle exclamation mark fault light is: first turn off the engine, wait for a while and then try to restart. This light usually comes on in two situations: One is engine system failure, and the other is light failure. The most common is light failure, which generally includes width lights, fog lights, turn signals, and license plate lights. Rear light failures are usually not easy to detect. If this happens, check whether the car light group is damaged in time. It may also be caused by low brake fluid or thin brake pads, or it may be caused by a faulty level sensor. There are many factors that can cause the fault light to come on, and they need to be checked one by one. The warning content described by different car models is also different.
Last time I encountered the yellow triangle exclamation mark on the dashboard, I was driving on the highway. This most commonly indicates a tire pressure monitoring system alert, possibly due to a nail in one of the tires - the light comes on when tire pressure is insufficient. It could also mean the vehicle's safety systems like stability control detected an abnormality, or the automatic headlight sensor is obstructed. Some vehicles flash this light when maintenance is due. In my case, it turned out to be low rear tire pressure. The mechanic at the repair shop explained this light serves as a general warning - you need diagnostic equipment to read specific trouble codes to pinpoint the issue. However, it's best not to continue driving too fast, as it could be dangerous if it involves the braking system.
