What does it mean when the dashboard thermometer light turns red?
2 Answers
The dashboard thermometer light turning red indicates that the coolant level is too low. Below is relevant information about coolant: 1. Main functions of coolant: (1) Provides anti-corrosion protection for cooling system components. (2) Prevents scale formation and reduces radiator temperature. 2. Coolant replacement cycle: The coolant replacement interval should follow the manufacturer's manual, typically every 2 years or 40,000 kilometers, with a maximum interval of 4 years or 60,000 kilometers. A few automakers offer lifetime coolant that never needs replacement, only requiring regular inspections. Since this type of coolant has slightly poorer fluidity, special attention should be paid to whether the cooling system's circulation and heat dissipation are functioning normally. Regularly monitor the coolant level to ensure it remains between the minimum and maximum marks.
Last time I went on a road trip, the thermometer on the dashboard suddenly lit up red, giving me a cold sweat. That was a signal of cooling system failure, common issues may include insufficient coolant, stuck fan, clogged radiator, or a broken water pump. I happened to be on the highway at that time, so I immediately turned on the hazard lights and slowly pulled over. After checking, I found the fan wasn't working due to poor electrical contact. Before long-distance driving in hot weather, it's best to check the coolant level and belt tension. Regular radiator maintenance can prevent similar situations. Never push through and keep driving - an overheated engine can blow the head gasket, and that's not cheap to repair.
