2015 Jeep Grand Cherokee Owner Manual - Page 628

626 MAINTAINING YOUR VEHICLE for any accumulation of bugs, leaves, etc. If dirty, clean by Cooling System - Drain, Flush And Refill gently spraying water from a garden hose vertically NOTE: Some vehicles require special tools to add coolant down the face of the condenser. properly. Failure to fill these systems properly could lead Check the engine cooling system hoses for brittle rubber, to severe internal engine damage. If any coolant is cracking, tears, cuts, and tightness of the connection at needed to be added to the system please contact your the coolant recovery bottle and radiator. Inspect the local authorized dealer. entire system for leaks. If the engine coolant (antifreeze) is dirty or contains 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 engine coolant (antifreeze) from the radiator drain cock. If the cap is sealing properly, the engine coolant (antifreeze) will begin to drain from the coolant recovery bottle. DO NOT REMOVE THE COOLANT PRESSURE CAP WHEN THE COOLING SYSTEM IS HOT. visible sediment, have an authorized dealer clean and flush with OAT coolant (antifreeze) (conforming to MS.90032). Refer to the "Maintenance Schedule" for the proper maintenance intervals. Selection Of Coolant Refer to "Fluids, Lubricants, and Genuine Parts" in "Maintaining Your Vehicle" for further information.