Engine Temperature Warning
Fluids & Temperature
Engine coolant temperature is dangerously high. Continued driving risks severe engine damage including warped heads or a blown gasket.
Quick answer
Stop as soon as it's safe and get the issue checked — this light indicates a serious problem.
Engine Temperature Warning on your specific vehicle
Select your make, model, and year for a guide tailored to your car.
Covers Toyota, Honda, Ford, Chevrolet, Nissan, Hyundai, Jeep and popular models 2015–2024.
What does this warning light look like?
The engine temperature warning appears in your instrument cluster or dashboard. It's sometimes described as: red thermometer, thermometer light, overheating, engine hot, coolant, temperature gauge.
Commonly searched phrases
People often search for: red thermometer light car • engine temperature light on • car overheating light • engine temp warning light • thermometer light dashboard meaning
Common causes
- Low coolant level or leak
- Faulty thermostat
- Failing water pump
- Radiator or hose leak
- Broken serpentine belt
Common symptoms
If this light is on and you notice one of these, it may point to a specific cause:
- If light on and steam or smell from hood …Likely cause: Coolant leak or overheating — stop and cool down
- If light on and heater blows cold …Likely cause: Low coolant or air in the system
- If light comes on in traffic, goes off on highway …Likely cause: Cooling fan, thermostat, or low coolant
What to tell your mechanic
Use this script so you sound informed and get a clear diagnosis before agreeing to repairs:
“The engine temperature light came on. I stopped and let it cool. Can you check the cooling system, coolant level, and thermostat?”
Can I keep driving?
No — stop as soon as it's safe. Do not keep driving.
What to do
Pull over safely and turn off the engine immediately. Do NOT open the radiator cap while hot. Call for roadside assistance.
Estimated repair cost
$500–$3,000
Exact cost depends on the cause, your vehicle, and labor rates in your area.
Frequently asked questions
- What does the Engine Temperature Warning mean?
- Engine coolant temperature is dangerously high. Continued driving risks severe engine damage including warped heads or a blown gasket.
- Can I drive with the Engine Temperature Warning on?
- No — stop as soon as it's safe. Do not keep driving.
- What should I do if I see the Engine Temperature Warning?
- Pull over safely and turn off the engine immediately. Do NOT open the radiator cap while hot. Call for roadside assistance.
- How much does it cost to fix the Engine Temperature Warning?
- Repair costs typically range from $500–$3,000. The exact cost depends on the cause and your vehicle.
Other Fluids & Temperature lights
You might also see these dashboard symbols in the same category: