Engine cooling system - check fluid level, adjust to correct level. Inspect anticorrosion/antifreeze protection, adjust to correct concentration · ap2000p2010h · Mercedes-Benz WIS

AP20.00-P-2010H

Engine cooling system - check fluid level, adjust to correct level. Inspect anticorrosion/antifreeze protection, adjust to correct concentration

18.01.2019

Engine	275.950 in model 215.376, 220.176
Engine	275.951 in model 230.476
Engine	275.954 in model 230.477
Engine	275.980 in model 215.379, 220.179
Engine	275.981 in model 230.479
Engine	275.983 in model 230.479
	with code P99 (Special model "AMG Black Series")
Engine	285.950 in model 240.078/178
Engine	285.980 in model 240.077/079/177/179

Engine cooling system - check fluid level, adjust to correct level. Inspect
anticorrosion/antifreeze protection, adjust to correct concentration

Shown on engine 285.950 in model 240.078

1	Cap
2	Coolant expansion reservoir
3	Engine cover
4	Cap

P20.30-2164-06

 Warning	Risk of injury to skin and eyes suffering scalding from contact with hot coolantspray. Risk of poisoning from 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
	Main circuit
1	Unscrew cap (1) on coolant expansion reservoir (2)
Topical note	Notes on coolant		AH20.00-N-2080-01A
		 Slowly screw open end cover (1) and release pressure, then unscrew end cover (1).
2	Check coolant for sufficient anticorrosion and antifreeze agent content
	Drain/pour in coolant		AR20.00-P-1142H
		 If the mixing ratio is incorrect, correct coolant composition:
		 Use only approved anti-corrosion and antifreeze agents.

		
3	Check coolant level and correct if necessary
	Notes on coolant level		AH20.00-P-1142-01CW
	Inspect cooling system for leaks		AR20.00-P-1010HA
		 If the fluid loss is not due to consumption, check cooling system for leak tightness: 
4	Screw cap (1) onto coolant expansion reservoir (2)
	Low temperature circuit
5	Remove engine cover(3)
		engine 285 in model 240	AR01.10-P-2405LA
		Engine 275.980 in model 215.379, 220.179 engine 275.981/983 in model 230.479	AR01.10-P-2405IM
6	Unscrew cap (4) of low-temperature circuit
	Venting air from the low temperature circuit		AR20.00-P-1145H
		 Only open cap (4) if the coolant temperature is under 40 °C; otherwise coolant can escape. If coolant escapes, the low-temperature circuit must be bled:
7	Check coolant for sufficient anticorrosion and antifreeze agent content
		Engine 275 in model 215,220,230 low-temperature circuit	AR20.00-P-1142HM
		Engine 285 in model 240 low-temperature circuit	AR20.00-P-1142HN
		 If the mixing ratio is incorrect, correct coolant composition:
		 Use only approved anti-corrosion and antifreeze agents.
8	Check coolant level and correct if necessary
	Notes on coolant level		AH20.00-P-1142-01CW
	Inspect cooling system for leaks		AR20.00-P-1010HN
		 If the fluid loss is not due to consumption, check cooling system for leak tightness: 
9	Screw on cap (4) of low-temperature circuit
10	Install engine cover (3)
		engine 285 in model 240	AR01.10-P-2405LA
		Engine 275.980 in model 215.379, 220.179 engine 275.981/983 in model 230.479	AR01.10-P-2405IM

Referenced documents

ah2000n208001a Notes on coolant
ah2000p114201cw Notes on coolant level
ar0110p2405im Remove/install engine cover
ar0110p2405la Remove/install engine cover
ar2000p1010ha
ar2000p1010ha Inspect cooling system for leaks
ar2000p1010hn Inspect cooling system for leaks
ar2000p1142h Drain/pour in coolant
ar2000p1142hm Drain/fill in coolant
ar2000p1142hn Draining/filling with coolant
ar2000p1145h Venting air from the low temperature circuit
as2000z000101a Risk of injury to skin and eyes suffering scalding from contact with hot coolantspray. Risk of poisoning from swallowing coolant.