What does the triangle with an exclamation mark in a car mean?

[LePhoebe]

Car triangle with an exclamation mark refers to the conventional faults of the car. The conventional faults of the car include overheating of the dry dual-clutch transmission, intervention or failure of the fuel cut-off system, parking sensor failure, exterior bulb failure, engine oil pressure sensor failure, traction control system warning or failure, etc. As long as one of these faults occurs, the triangle exclamation mark light on the dashboard will light up. In addition to the triangle exclamation mark indicator light, the dashboard also has indicator lights with exclamation marks such as tire pressure indicator light, lighting fault indicator light, steering system fault indicator light, brake system fault light, transmission fault indicator light and windshield wiper fault indicator light. As long as the warning light with an exclamation mark lights up, it means that the corresponding part of the car has a problem and should be checked and repaired in time.

[LucyMarie]

When I first bought my car, the triangle with an exclamation mark light also gave me a scare. Later, I learned that it's the tire pressure warning light, mainly indicating that one of the tires has low pressure, possibly due to a puncture causing air leakage or contraction from cold weather. I've encountered this often, especially during freezing winters when the light comes on while driving on the highway. I quickly pull over and use a portable pressure gauge to check, only to find the right front tire at just 2.0 bar, far below the standard 2.5 bar marked on the door label. I immediately head to a gas station to inflate it, and the light turns off after driving about 200 meters. Ignoring it leads to faster tire wear, increased fuel consumption, and even the risk of a blowout in summer—definitely not worth it. Sometimes, if the light doesn’t go off, it could mean the sensor is faulty, requiring a visit to the repair shop for diagnosis and repair with specialized tools. Don’t delay, as it affects safety. For daily maintenance, I recommend manually checking tire pressure monthly as a preventive measure. Make it a habit, and sudden alerts won’t catch you off guard.

[SanGiselle]

Seeing the dashboard light flashing makes me nervous, knowing it's a signal for low tire pressure, which means a significant increase in driving risk. Once the tire pressure is too low, the tire deforms, leading to unstable vehicle control, potential skidding in curves, or longer braking distances, all of which could cause accidents. Once, I ignored the light and kept driving, resulting in the rear tire overheating from friction and nearly bursting—fortunately, I pulled over in time. Low tire pressure also increases fuel consumption; for example, my friend's car's fuel efficiency dropped from 6 liters to 8 liters, wasting money on gas. Safety first, so I always pull over to check when the light comes on, identify which tire has the issue, and adjust the pressure according to the manual. Additionally, tire pressure fluctuates more in winter, making the light more likely to come on. Inflating the tires is a routine fix, but don’t forget to keep an emergency air pump handy for urgent situations.

[KhloeDella]

I usually check the tire pressure warning light myself, often caused by tire leaks or abnormal pressure. The solution is simple: use a tire pressure gauge to measure all four tires, and inflate any below the standard value to the manufacturer's recommended level, such as 2.3 bar as indicated on the door frame label. After inflating, drive for a few minutes—the light may turn off. If not, check if the sensor is faulty. Sometimes a nail puncture causes a slow leak, requiring a patch for just a few dollars. Keeping a basic tool kit handy saves time and money. If the light comes on, don’t panic, avoid speeding, and don’t delay to prevent tire damage. Make it a habit to check tire pressure quarterly to catch issues early and ensure smooth driving.

[LaMalachi]

Ignore this warning light at your peril. I heard someone left their tire pressure light on for two weeks without checking, ended up wearing out all tires prematurely, costing nearly a thousand dollars in replacements plus wasted fuel. This light usually indicates low tire pressure or similar issues, with air leakage being the primary cause requiring immediate attention. Learned my lesson the hard way: during a long trip, I dismissed the light as a false alarm, only to discover a slow puncture in the left rear tire when parked. Inflating it temporarily and driving to a repair shop for a $50 patch saved me thousands in potential towing and emergency replacement costs. For prevention, I set monthly phone reminders to check tire pressure, maintaining it within the doorjamb-specified range. Properly inflated tires rarely trigger the light and can extend tire life by 1-2 years—cost-effective and worry-free.