What to Do When the Dashboard Thermometer Light Comes On?
2 Answers
When the dashboard thermometer light comes on, it indicates that the water temperature is too high and will display in red. At this time, you need to stop and check. The steps are as follows: 1. Open the engine hood and touch the upper and lower water pipes of the engine by hand. If the temperature difference is high, replace the thermostat. If it's normal, check the water level to see if there is a leak. 2. Turn on the AC switch to see if the fan is running. Check the AC relay, fan relay, and fuse. If everything is normal, check the water temperature sensor. For vans or diesel vehicles, wait for the water temperature to cool down naturally. One important thing to note is not to open the radiator cap or touch the engine immediately after stopping, as the engine temperature is very high at this time and can easily cause burns. If the thermometer is blue, it indicates that the water temperature is too low, which usually only lights up after a cold start.
When the thermometer light on the dashboard comes on, I immediately know the engine might be overheating, which is no small matter. I need to find a safe spot to pull over and turn off the engine right away, then turn on the hazard lights to warn other drivers. After stopping, don't rush to open the hood—wait at least 15-30 minutes for the car to cool down, or the hot steam could cause burns. Once cooled, check the coolant level to see if it's low; if it is, top it up with dedicated coolant or purified water as a temporary fix, but remember water is only a stopgap—get to a repair shop for proper fluid as soon as possible. If unsure about the coolant level, don't force it—call a tow truck or a professional mechanic for help. While driving, I always keep an eye on the temperature gauge, especially in traffic jams or during hot summer days, controlling speed and A/C usage to effectively prevent overheating. If the engine runs hot for too long, wear and tear accelerate, leading to costly part replacements and serious risks. Regular cooling system maintenance is crucial—check the coolant and radiator at least every six months.
