Required Special Tools: • MB991871: LLC changer Check the cooling system parts such as the radiator, heater and oil cooler hoses, thermostat and the connections for leakage and damage. CHANGING COOLANT 1.Set the temperature control knob to the "HOT" position. When removing the radiator cap, use care to avoid contact with hot coolant or steam. Place a shop towel over the cap and turn the cap counterclockwise a little to let the pressure escape through the vinyl tube. After relieving the steam pressure, remove the cap by slowly turning it counterclockwise.

2.Remove the radiator cap, radiator drain plug and cylinder block drain plug to drain the coolant. 3.Remove the reserve tank and drain the coolant. 4.After completely draining the coolant, reinstall the drain plugs and flush the engine and radiator using a radiator cleaning fluid. 5.After the flushing is completed, completely drain the cleaning fluid.

6.Apply the designated sealant to the screw area of the cylinder block drain plug, and then tighten at the standard torque. Specified sealant: 3MTM Nut Locking Part number 4171 or equivalent Tightening torque: 39 N·m (29 ft-lb)

7.Loosen the air bleed bolt. Do not use alcohol or methanol anti-freeze or any engine coolants mixed with alcohol or methanol anti-freeze. The use of an improper anti-freeze can cause the corrosion of the aluminum components.

8.By referring to the section on coolant, select an appropriate concentration for safe operating temperature within the range of 30 to 60%. Use special tool MB991871 to refill the coolant. A convenient mixture is a 50% water and 50% antifreeze solution [freezing point: -31°C (-32.8 °F)]. Recommended antifreeze: Long Life Antifreeze Coolant or an equivalent Quantity: Without rear heater 9.0 cm3 (9.5 quart) With rear heater 10.0 cm3 (10.6 quart) NOTE: For the usage of special tool MB991871, refer to the instructions enclosed with the special tool.

9.Pour in coolant until it overflows from the air bleed bolt hole, and then tighten the air bleed bolt. Tightening torque: 12 - 15 N·m (106 - 133 in-lb) 10.Reinstall the radiator cap. 11.Start the engine and let it warm up until the thermostat opens. 12.After repeatedly revving the engine up to 3,000 r/min several times, then stop the engine. 13.Remove the radiator cap after the engine has become cold, and pour in coolant up to the brim. Rein stall the cap. Do not overfill the tank. 14.Add coolant to the reserve tank between the "FULL" and "LOW" mark if necessary.