What does the coolant indicator light mean in a car?
2 Answers
When the coolant indicator light appears in a car, it shows two wavy lines at the bottom representing water. Here is relevant information: 1. Symbol: There is a thermometer between the wavy lines. Coolant is commonly known as antifreeze, with its full name being antifreeze coolant. 2. Types of automotive coolant: Alcohol-based coolant, glycerol-based coolant, ethylene glycol-based coolant, and propylene glycol-based coolant. Below are extended details about automotive coolant functions: 1. Engine protection: Prevents the car's radiator and engine block from cracking due to freezing in low-temperature environments. 2. Cooling system: Protects the cooling system from corrosion. 3. Scale prevention: Reduces scale formation during circulation. 4. Heat absorption: Absorbs heat to keep the radiator from boiling under high temperatures.
Last time I was driving, the coolant warning light popped up on the dashboard, so I immediately pulled over to check. I encountered this situation because the fluid level was too low or there was a leak, most commonly due to a cracked radiator or aging hoses. Be careful when opening the cap before the engine has cooled down—first turn off the engine and wait for it to cool. Check if the fluid level in the reservoir is below the minimum line; if it’s low, top it up with the appropriate coolant mixed with water. However, be wary if the warning light appears frequently—it could mean the water pump is broken or the thermostat is stuck, leading to poor circulation and causing the engine to overheat or even explode, which could result in repair costs in the tens of thousands. I recommend checking the fluid level every two weeks and before long trips to prevent minor issues from turning into major repairs, saving both hassle and money.
