Venting air from the low temperature circuit - AR20.00-P-1145RVK (SL500, SL55 AMG)

ENGINE 113.992 in MODEL 230.474 

ENGINE 113.990 in MODELS 211.076 /276 

ENGINE 113.991 in MODEL 215.374 

ENGINE 113.991 in MODELS 220.074 /174 

ENGINE 113.963 in MODEL 230.475 

ENGINE 112.960 in MODEL 170.466 

ENGINE 112.961 in MODELS 203.065 /265 

ENGINE 113.995 in MODEL 230.472 

Fig 1: Identifying Venting Air From Low Temperature Circuit

Courtesy of MERCEDES-BENZ USA

	Remove/install
	Risk of injury  to skin and eyes caused by scalding from contact with hot coolant spray. Risk of poisoning  from swallowing coolant.	Do not open cooling system unless coolant temperature is below 90°C. Open cap slowly and release pressure. Do not pour coolant into beverage containers. Wear protective gloves, protective clothing and safety glasses.	AS20.00-Z-0001-01A
1	Open cap at coolant expansion reservoir (2)	Cap with detent: Carefully turn cap as far as first detent, release pressure, and then unscrew cap. 2-stage and 1-stage cap: Rotate cap half a revolution counterclockwise, release pressure relief and then unscrew cap.
	Notes on coolant	All engines	AH20.00-N-2080-01A
2	Pour in coolant	Fill coolant up to prescribed marking in coolant expansion reservoir (2).	AR20.00-P-1142RVK
3	Close coolant drain line (4) with pliers
4	Detach coolant line from fitting (3)
5	Attach additional ventilation hose to fitting (3)	Route vent hose to coolant expansion tank (2).
	Risk of injury caused by moving parts that can pinch, crush or  , in extreme cases even sever extremities.	No parts of the body or limbs should be within the operating range of the mechanism when components are in motion.	AS00.00-Z-0009-01A
6	Venting air from the low temperature circuit	The electric fan runs up to 50% during the ventilation procedure. Purging:  Actuate charge air cooler circulation pump (M44) using STAR DIAGNOSIS. Let charge air cooler circulation pump (M44) run until coolant flows out of fitting (3) free of bubbles.
		STAR DIAGNOSIS diagnostic system	*WH58.30-Z-1048-13A
7	Install in the reverse order
8	Inspect cooling system for leaks		AR20.00-P-1010RVK