2012 Dodge Challenger Owner Manual - Page 410

408 MAINTAINING YOUR VEHICLE Cooling System WARNING! • When working near the radiator cooling fan, disconnect the fan motor lead or turn the ignition switch to the LOCK position (OFF position for Keyless Enter-N-Go). The fan is temperature controlled and can start at any time the ignition switch is in the ON position (RUN position for Keyless Enter-N-Go). • You or others can be badly burned by hot coolant or steam from your radiator. If you see or hear steam coming from under the hood, do not open the hood until the radiator has had time to cool. Never try to open a cooling system pressure cap when the radiator is hot. Coolant Checks Check engine coolant (antifreeze) protection every 12 months (before the onset of freezing weather, where applicable). If coolant is dirty or rusty in appearance, the system should be drained, flushed, and refilled with fresh coolant. Check the front of the radiator for any accumulation of bugs, leaves, etc. If dirty, clean by gently spraying water from a garden hose vertically down the face of the condenser. Check the coolant recovery bottle tubing for brittle rubber, cracking, tears, cuts, and tightness of the connection at the bottle and radiator. Inspect the entire system for leaks. With the engine at normal operating temperature (but not running), check the cooling system pressure cap for proper vacuum sealing by draining a small amount of coolant from the radiator drain cock. If the cap is sealing properly, the engine coolant (antifreeze) will begin to