If the temperature warning appears or steam comes from the engine area, focus on reaching a safe place. Signal and move away from traffic without making sudden maneuvers. Follow the owner’s manual; if it directs you to stop the engine, do so. Turn on hazard lights where appropriate and keep passengers away from traffic and the vehicle if the location is unsafe.
Never remove a radiator cap or coolant reservoir cap while the system is hot. Pressurized coolant can cause severe burns. Do not pour cold water over a hot engine or continue driving to see whether the warning clears. If there is steam, a leak, or an urgent warning, arrange roadside assistance or a tow rather than risking injury or major engine damage.
Once the vehicle has cooled fully, a professional can inspect coolant level, hoses, fans, leaks, and related components. A low level may be a symptom, not the root cause, so repeated topping up is not a repair. Note any warning messages, temperature changes, or unusual smells for the technician. If overheating happens again, stop safely and seek help promptly.