2012 Subaru Forester Owner's Manual - Page 409

In case of emergency 9-13 Engine overheating WARNING Never attempt to remove the radiator cap until the engine has been shut off and has fully cooled down. When the engine is hot, the coolant is under pressure. Removing the cap while the engine is still hot could release a spray of boiling hot coolant, which could burn you very seriously. If the engine overheats, safely pull off the road and stop the vehicle in a safe place. & If steam is coming from the engine compartment Turn off the engine and get everyone away from the vehicle until it cools down. & If no steam is coming from the engine compartment NOTE For details about how to check the coolant level or how to add coolant, refer to "Engine coolant" F11-14. 1. Keep the engine running at idling speed. 2. Open the hood to ventilate the engine compartment. Refer to "Engine hood" F11-5. Confirm that the cooling fan is turning. If the fan is not turning, immediately turn off the engine and contact your SUBARU dealer for repair. 3. After the engine coolant temperature has dropped, turn off the engine. If any of the following conditions occur, turn off the engine. . The temperature gauge stays in the overheated zone (if equipped). Refer to "Temperature gauge (models with type A combination meter)" F3-11. . The coolant temperature high warning light remains illuminated (if equipped). Refer to "Coolant temperature low indicator light/Coolant temperature high warning light" F3-16. 4. After the engine has fully cooled down, check the coolant level in the reservoir. If the coolant level is below the "LOW" mark, add coolant up to the "FULL" mark. 5. If there is no coolant in the reservoir, add coolant to the reservoir. Then remove the radiator cap (non-turbo models) or the coolant filler tank cap (turbo models) and fill the radiator with coolant. If you have to remove a hot radiator cap/ coolant filler tank cap, first wrap a thick cloth around the cap, then turn the cap counterclockwise slowly without pressing down until it stops. Release the pressure from the cooling system. After the pressure has been fully released, remove the cap by pressing it down and turning counterclockwise.