Coolant Warning Light On? Here’s What Each Color Means

CarHow
CarHow
Published on 11.02.2026

⚠️ Do not open the coolant cap on a hot engine because the pressurized, boiling coolant can spray out, causing severe burns and injuries. Wait for the engine to completely cool down for several hours. If you need to check the level while hot, use a rag, and very slowly and partially twist the cap to release pressure gradually before fully opening it.

How to check the coolant level?

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