Check/correct fluid level of high-voltage battery cooling system · ap2000p2012mev · Mercedes-Benz WIS

AP20.00-P-2012MEV

Check/correct fluid level of high-voltage battery cooling system

09.12.2019

Engine

780.009 in model 451.391/491

Check/correct fluid level of high-voltage battery cooling system

1	Cap
2	Expansion reservoir

P20.00-2327-11

 Danger	Risk of death when working on component parts and systems with U >= 30 V alternating voltage (AC) or U >= 60 V direct voltage (DC)	Do not touch damaged or defective live component parts and lines or non-insulated electrical connections and lines.	AS00.00-Z-0035-01A
 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
Topical note	General information on handling vehicles with high-voltage on-board electrical system and/or lithium-ion battery and/or gaseous-fuel drive system		AH00.00-Z-0300-01A
Topical note	Notes on coolant		AH20.00-N-2080-01A
Topical note	Information on preventing damage to electronic components due to electrostatic discharge		AH54.00-P-0001-01A
	Remove
1	Remove maintenance flap
2	Turn cap (1) on expansion reservoir (2) half a revolution counterclockwise, relieve overpressure and then unscrew cap (1)
	Check
3	Check corrosion/antifreeze in coolant and enter in the maintenance sheet
	Anticorrosion/antifreeze agents (Sheet 325.0)		BB00.40-P-0325-00A
	Coolant specifications		BB00.40-P-0310-01A
		 Antifreeze spindle	*450589012100
		If necessary, correct coolant composition subject to separate repair order.
		

		Replace coolant	AP20.00-P-2080MEW
4	Check coolant level in expansion reservoir (2), correct if necessary	 The coolant level in the expansion reservoir (2) must be level with the maximum mark.
		In the event of fluid loss not caused by consumption or when the coolant circuit has been opened, the coolant system must be checked for leaks subject to a separate order.
		

		Inspect cooling system for leaks	AR20.00-P-1010MEW
	Install
5	Seal expansion reservoir (2) with cap (1)
6	Install maintenance flap

450 589 01 21 00

Antifreeze spindle

Referenced documents

ah0000z030001a General information on vehicles with high-voltage on-board electrical system and/or lithium-ion battery and/or gaseous-fuel drive system as well as personal protective equipment
ah2000n208001a Notes on coolant
ah5400p000101a Information on preventing damage to electronic components due to electrostatic discharge
ap2000p2080mew Replace coolant
ar2000p1010mew Inspect cooling system for leaks
as0000z003501a Risk of death when working on component parts and systems with U >= 30 V alternating voltage (AC) or U >= 60 V direct voltage (DC)
as2000z000101a Risk of injury to skin and eyes suffering scalding from contact with hot coolantspray. Risk of poisoning from swallowing coolant.
bb0040p031001a Coolant specifications
bb0040p032500a Anticorrosion/antifreeze agents (Sheet 325.0)