Stop driving as soon as it's safe to do so.
This light generally indicates a problem serious enough that continuing to drive risks real damage or a safety issue.
Engine Coolant Temperature Warning Light
Stop Driving NowWhat it generally indicates
Indicates the engine is running hotter than it should.
Possible causes
A low coolant level, a coolant leak, a failing water pump, a stuck thermostat, or a cooling fan that has stopped working.
Whether continued driving may be risky
Continuing to drive an overheating engine can cause serious, expensive damage. Pull over safely, turn off the engine and let it cool before checking anything under the hood. Never open the radiator cap or coolant reservoir while the engine is hot — the coolant is under pressure and can cause severe burns.
What a technician may inspect
Once the engine is cool, check the coolant level and look for visible leaks; a technician can pressure-test the cooling system.
Related vehicle systems
Related repairs
This is general guidance, not a diagnosis — your owner's manual is the final word for your specific model, and a qualified technician should confirm the actual cause.