Check Low-Temperature Circuit Coolant Level - AP20.30-P-2052V

Engine 279 in model 223 

Courtesy of MERCEDES-BENZ USA

Shown on engine 279.9 in model 223.979 

Shown on engine 279.9 in model 223.979 

Courtesy of MERCEDES-BENZ USA

	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 overpressure. Do not pour coolant into beverage containers. Wear protective gloves, protective clothing and safety glasses.	AS20.00-Z-0001-01A
	Risk of injury  from engine start by remote start function	Prior to starting work, open engine hood, do not reach into rotation range or hazard area of freely rotating parts, wear closed and snug-fitting work clothes	AS00.00-Z-0024-01A
Notice	Notes on coolant		AH20.00-P-2080-01KOA
	Remove
1	Remove engine cover (3).		AP01.10-P-2405-01Q
2	Unscrew cap (1) of low-temperature circuit coolant expansion reservoir (2).	Only open cap (1) if the coolant temperature is below 40°C. Coolant can otherwise escape. If coolant has leaked from the low-temperature circuit, ↓ bleed low-temperature circuit. After obtaining special order.
	Check
3	Check coolant level.	The coolant level in a cold engine must reach the marking (arrow) in the low-temperature circuit coolant expansion reservoir (2). When coolant is warm: approx. 1 cm (0.39 inch) above marking. If the coolant level is too low, ↓ Check cooling system for leak tightness and coolant for antifreeze content.
		Coolant specifications After obtaining special order.	BB00.40-P-0310-01A
	Install
4	Seal low-temperature circuit coolant expansion reservoir (2) with cap (1).
5	Install engine cover (3).		AP01.10-P-2405-01Q