What to Do When the Engine Coolant Light Comes On?
2 Answers
Immediately turn off the engine and stop to inspect the issue. Do not continue driving until the problem is resolved. If the engine coolant light comes on, take the following measures: 1. Determine the engine load: Check if it is excessive. 2. Pull over to the side of the road: After stopping, open the engine hood for inspection. 3. Check the coolant level: Ensure the coolant is sufficient. 4. Inspect for coolant leaks: Refill the coolant if necessary. For vehicles, if the temperature of the radiator coolant exceeds the normal range and continues to drive, it will cause increased engine wear and, in severe cases, lead to issues like cylinder scuffing. When the vehicle's water temperature is too high, do not turn off the engine abruptly. For most car models, the cooling system's water pump is driven by the engine. Once the engine is turned off, the pump will also stop, preventing the coolant from circulating. At this time, the engine components remain at high temperatures, and if not effectively cooled, it may cause severe engine damage.
When the coolant warning light on the dashboard comes on, pull over and turn off the engine immediately. Do not continue driving, or the engine may overheat and get damaged. Wait about 10 minutes for the engine to cool down, then open the hood and check the fluid level in the expansion tank—see if it’s between the MIN and MAX lines. If it’s noticeably low, first inspect the area for any signs of leakage. If none are found, add the appropriate coolant or distilled water (avoid tap water as it can corrode the system), ensuring the color matches the original blue or green coolant in your car. However, if the fluid level is normal but the light remains on, it could indicate a faulty sensor, water pump issue, or a stuck thermostat causing poor cooling. This can severely damage the cylinder head, costing thousands in repairs! Remember to check the coolant concentration every six months and double-check before long trips.
