What does an exclamation mark inside a bracket indicate as a warning light?

[DelilahMarie]

An exclamation mark in red (specifically, an exclamation mark inside a circled bracket) represents a warning for the braking system, primarily indicating either a malfunction in the braking system or low brake fluid level. Solution: Immediate inspection and repair of the braking system are required to prevent accidents. Apart from the red exclamation mark indicating braking system issues, other exclamation marks on a car's dashboard are yellow, representing general faults, automatic transmission issues, abnormal tire pressure, and lighting system faults. Below is a detailed analysis of these four scenarios: General Fault: A triangle with an exclamation mark inside. If this symbol lights up, it indicates a malfunction in the car's general performance, components, or functions. Common issues include parking sensor failure, fuel cutoff system intervention or malfunction, external light failure, or engine oil pressure sensor malfunction. A visit to a 4S shop is necessary to diagnose and address the fault. Automatic Transmission Fault: A yellow gear with an exclamation mark inside. This is the automatic transmission fault warning light, indicating a problem with the transmission or that the transmission fluid is below the normal range. Transmission fluid should be replaced promptly. Abnormal Tire Pressure: An exclamation mark with a line underneath inside a bracket. This is the tire pressure monitoring warning light, which illuminates when the tire pressure is too low. Check the tire pressure and restore it to the normal range. Lighting Fault: A yellow bulb with an exclamation mark. This is the lighting fault indicator, signaling a malfunction in one of the car's lights. Solution: Visit a 4S shop as soon as possible for inspection and repair. Alternatively, you can perform a self-check, focusing on commonly used bulbs such as turn signals, fog lights, and interior lights to identify the issue.

[DeGia]

Yesterday I also encountered this situation - a yellow warning light with an exclamation mark in brackets suddenly appeared on the dashboard. After checking the manual, I realized it was a tire pressure warning, most likely caused by a punctured tire. Never ignore this kind of warning light. I've experienced it twice before: once due to a slow leak from a nail puncture, and another time caused by low tire pressure from cold weather. It's best to pull over immediately and inspect the tires yourself, running your hand around to check for obvious deflation. If you're inexperienced, drive to a repair shop where they can quickly diagnose the issue with a tire pressure gauge. This concerns driving safety, especially on highways where underinflated tires can easily blow out. Don't continue driving just to save trouble. Fixing a punctured tire usually costs just tens of yuan, which is much cheaper than replacing a whole tire!

[DeGavin]

I know this exclamation-mark-in-brackets warning light all too well – it's absolutely the tire pressure monitoring system (TPMS) alert. It typically illuminates for three reasons: most commonly due to a punctured/tire leak, secondly from pressure drops caused by sudden temperature changes, and occasionally just sensor malfunctions. Once during a long drive when it lit up, I found my rear right tire nearly flat upon inspection and had to urgently change to the spare. New drivers shouldn't panic when this happens – first try pressing the TPMS reset button (usually on the left side of the steering wheel). If the light turns off, it might be a false alarm. If it persists, immediately visit a repair shop where they'll use professional equipment to locate leaks. Develop good habits by manually checking tire pressure monthly – around 2.5Bar when tires are cold is ideal.

[McFrancisco]

The exclamation mark in brackets on the dashboard is basically a tire pressure issue. It could be caused by a punctured tire leaking air, a faulty tire pressure sensor, or even excessively high or low tire pressure. I recommend immediately checking all four tires for obvious air loss. If you have an air pump, you can add some air first and observe. Remember, never kick the tires to check—it’s inaccurate. If you’re not familiar with mechanical knowledge, just drive to a tire shop. Spending five minutes to measure the tire pressure can confirm the cause. Long-term abnormal tire pressure is particularly damaging to tires—I’ve seen sidewalls worn with cracks, and replacing a new tire costs around four to five hundred. You can also ask the staff to check the tire pressure when you wash your car.

[JosephineFitz]

Don't ignore the yellow warning light with an exclamation mark in brackets—90% of the time it's a tire pressure monitoring system (TPMS) alert. Common causes include slow leaks, dead sensor batteries, or aging valve cores. I once had a leaky valve core—replacing it cost just five yuan. Here's what to do: First, turn on hazard lights and pull over safely. Use your phone's flashlight to inspect tires visually. If nothing looks wrong, drive slowly to a repair shop (avoid potholes). Small tire shops can fix it for around 20 yuan, while dealerships may charge extra for diagnostics. These warnings frequently appear during winter temperature drops—keep a portable inflator in your trunk for convenient top-ups.