What Causes the Exclamation Mark Light to Illuminate in a Car?
2 Answers
Car exclamation mark light illumination reasons are as follows: Brake system malfunction: When the light is on, it indicates severe wear or failure of brake pads, low or deteriorated brake fluid level, or parking brake malfunction. Low tire pressure: The light illuminates when tires are punctured and leaking, when the system detects excessive tire pressure, or when tire pressure is insufficient. Steering system malfunction: The light indicates wear, damage, or abnormal noise in steering system components. Issues with the steering system, electrical circuits, or hydraulic circuits can all trigger this. Common accompanying symptoms include heavy steering, steering noise, steering wheel vibration, and poor steering wheel return ability.
I remember over the years of driving, the exclamation mark light on the dashboard has lit up several times, and each time I had to handle it carefully. Usually, this is the warning light for the braking system, indicating there might be an urgent issue. The most common reason: the handbrake wasn't fully released. Once, right after starting the car, the light was on—turned out the handbrake wasn't pulled all the way when parking; pulling it tight and then releasing it fixed it. If it's not the handbrake, then it might be low brake fluid level in the reservoir, caused by leakage or evaporation, especially during seasons with significant temperature changes, making it prone to issues. Ignoring it poses a high risk of brake failure, which is extremely dangerous when driving on highways. I suggest pulling over as soon as you see the light come on, turning off the engine to check the handbrake position, and giving it a wiggle to see. If that's fine, pop the hood and take a quick look at the brake fluid reservoir—if the level is below the marked line, you'll need to top it up or call a mechanic. During regular maintenance, pay extra attention to checking these areas to prevent small problems from becoming big ones. Safety always comes first; taking the time to sort it out is much better than risking an accident.
