What Should You Do When Your Car Temperature Light Turns On?
Pull over safely, turn off the engine immediately, and let the cooling system settle down before taking any further action. Continuing to drive while the red dashboard temperature symbol is lit risks severe internal damage, such as warped cylinder heads or a blown head gasket. Safely coasting to the shoulder, shutting down the ignition, and opening the hood to let heat escape prevents localized thermal hot spots from destroying critical engine components.