Replace coolant - AP20.00-P-2080GZ (ML350, ML500, ML550, ML63 AMG, GL450, GL550)

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ENGINE 113, 156, 272, 273 in MODEL 164

ENGINE 156 in MODEL 209, 251

Fig 1: Identifying Coolant Expansion Reservoir And Cap

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

	Checking
	Risk of injury to skin and eyes caused by scalding from contact with hot coolant spray. Risk of poisoning caused by swallowing coolant.	Do not open cooling system unless coolant temperature is below 90°C. Open cap slowly and release the pressure. Do not pour coolant into beverage containers. Wear protective gloves, protective clothing and safety glasses.	AS20.00-Z-0001-01A
	Risk of death caused by vehicle slipping or toppling off of the lifting platform.	Align vehicle between columns of vehicle lift and position four support plates at vehicle lift support points specified by vehicle manufacturer.	AS00.00-Z-0010-01A
1	Switch off ignition
2	Open engine hood		AR88.40-P-1000GZ
3	Unscrew cap (1) on expansion reservoir (2) for coolant and check coolant level	If fluid loss is not due to normal consumption, against separate order: ↓ Inspect cooling system for leaks:
		Engine 113 in model 164	AR20.00-P-1010GZ
		Engines 272, 273 in model 164	AR20.00-P-1010GZC
		Engine 156 in model 164, 251	AR20.00-P-1010GZS
		Engine 156 in model 209	AR20.00-P-1010TMG
	Notes on coolant level	Model 164, 251	AH20.00-P-1142-01GZB
		Model 209	AH20.00-P-1142-01PI
4	Drain coolant
	Drain/fill in coolant	Engine 113 in model 164	AR20.00-P-1142GZ
		Engines 272, 273 in model 164	AR20.00-P-1142GZC
		Engine 156 in model 164, 251	AR20.00-P-1142GZS
		Engine 156 in model 209	AR20.00-P-1142TMG
	Notes on coolant		AH20.00-N-2080-01A
5	Pour in new coolant	Use only approved anticorrosion and antifreeze agents.
	Drain/fill in coolant	Engine 113 in model 164	AR20.00-P-1142GZ
		Engines 272, 273 in model 164	AR20.00-P-1142GZC
		Engine 156 in model 164, 251	AR20.00-P-1142GZS
		Engine 156 in model 209	AR20.00-P-1142TMG
		A model 30 engine filled with antifreeze must not be filled later on with conventional coolant as per Sheet 325.0 or 325.2. The antifreeze model 30 may not be mixed with other antifreezes and it must be replaced every 3 years. Engine damage can occur otherwise. A special antifreeze (model 30) is available for the "light alloy corrosion in cooling circuit" repair case. Indications of light alloy corrosion in the cooling circuit are: - Sludging or gel formation in cooling system - Engine overheating - Flow rate deficiency in cooler In these cases, a warning label (model 30) is to be attached in a well-visible spot on the coolant expansion reservoir (2). Use antifreeze model 30 if warning label (model 30) is present on the coolant expansion reservoir (2). Use only approved anticorrosion and antifreeze agents.
	Mixture ratio for coolant		*BF20.00-P-1001-04A
	Engine 113		*BF20.00-P-1001-02K
		Engines 156, 272, 273	*BF20.00-P-1001-02U
6	Seal coolant expansion reservoir (2) with cap (1)
7	Close engine hood		AR88.40-P-1000GZ

MIXTURE RATIO FOR COOLANT

Number	Designation			Engine all
BF20.00-P-1001-04A	Mixture ratio for coolant	Antifreeze/water	Up to -37°C	50/50
		Antifreeze/water	Up to -45°C	55/45
		Specifications for service products	Sheet	BB00.40-P-0310-01A
		Specifications for service products	Sheet	BB00.40-P-0325-00A

COOLING SYSTEM

Number	Designation			ENGINE 113.964 in MODEL 164
BF20.00-P-1001-02K	Cooling system	Total filling capacity	Liters	≈ 10.00
		Filling capacity of anticorrosion agent/antifreeze agent down to -37°C	Liters	≈ 5.00
		Filling capacity of anticorrosion agent/antifreeze down to -45°C	Liters	≈ 5.5
		Specifications for Operating Fluids	Sheet	BB00.40-P-0310-01A
		Specifications for Operating Fluids	Sheet	BB00.40-P-0325-00A

COOLING SYSTEM

Number	Designation			ENGINE 272 in MODEL 164	ENGINE 273 in MODEL 164	ENGINE 156 in MODEL 164
BF20.00-P-1001-02U	Cooling system	Total filling capacity (Main circuit)	Liter	5.0	6.5	7.5
		Antifreeze/water: Up to -37°C As of -38°C	% %	50/50 55/45	50/50 55/45	50/50 55/45
		Sheet		BB00.40-P-0310-01A	BB00.40-P-0310-01A	BB00.40-P-0310-01A
		Sheet	BB00.40-P-0325-00A	BB00.40-P-0325-00A	BB00.40-P-0325-00A