What is the overheating symbol on a Subaru?
The overheating symbol in a Subaru is the engine coolant temperature warning light. It signals that the engine is running hotter than it should or that the cooling system isn’t maintaining proper temperature.
Understanding the symbol on Subaru dashboards
In Subaru vehicles, the overheating warning is tied to the engine’s cooling system. The symbol typically appears as a thermometer icon or a temperature gauge indicator. Colors and exact shapes can vary by model year and trim, but the purpose remains the same: alert you to potential overheating or coolant-related issues. If the light stays on or flashes, treat it as an urgent warning for immediate action.
Visual cues by model and year
Most Subaru dashboards use a thermometer-style icon for the engine coolant temperature warning. In many models, the indicator color shifts from blue (engine cold) to amber or red (overheating or low coolant). Some vehicles combine this with a gauge that shows temperature on a dial. Because appearances can differ between generations, consult your owner’s manual for the exact symbol in your year and trim.
Before you rely on a single emblem, the general rule is: blue indicates cold start conditions, while amber/red indicates the engine is overheating or there is a coolant issue. If you notice either scenario while driving, act accordingly to protect the engine.
What to do if the overheating symbol appears
When the engine temperature warning lights up, follow these steps to reduce risk of damage and diagnose the problem safely.
- Safely pull over to a secure location and turn off the engine to begin cooling.
- Let the engine cool for at least 15–30 minutes before opening the hood or checking coolant. Do not remove the radiator cap while the engine is hot.
- Check the coolant level once the engine is cool. If it’s low, top off with the correct type of coolant (or distilled water if you’re stranded and you know how) and inspect for obvious leaks. Do not overfill.
- Inspect for obvious cooling system issues: damaged hoses, a loose or failed radiator cap, a malfunctioning radiator, or a fan that isn’t turning on when needed.
- If the temperature returns to normal after cooling and the warning light goes off, monitor it closely. If it rises again, or if you see steam or smoke, seek professional service immediately.
- When in doubt or if you cannot identify the cause, contact roadside assistance or a qualified mechanic to inspect components such as the thermostat, water pump, radiator, and coolant quality.
Overheating can cause severe engine damage, so persistent or recurring warnings should never be ignored.
Preventive measures for Subaru cooling systems
Regular maintenance can minimize the chance of overheating. Consider these best practices:
- Check coolant level and condition at recommended service intervals; use the manufacturer-approved coolant and the correct mix.
- Inspect hoses for cracks, bulges, or leaks and replace aging ones as needed.
- Ensure the radiator cap and radiator are in good condition and that the cooling fans operate properly.
- Have the thermostat and water pump tested if overheating recurs or if the gauge behaves abnormally.
- Schedule cooling system service according to your vehicle’s manual, especially before extreme-weather seasons or long trips.
Proactive maintenance helps prevent overheating and extends the life of your Subaru’s engine.
Summary
In a Subaru, the overheating symbol is the engine coolant temperature warning light. It alerts you to potential overheating or coolant-related issues and should prompt immediate safe action. Regular maintenance, timely checks of coolant levels, and attention to cooling-system components can prevent these warnings and protect the engine from damage.
