Drain/fill coolant for 48 V on-board electrical system coolant circuit

AR20.00-P-2014MRV

Drain/fill coolant for 48 V on-board electrical system coolant circuit

17.08.2020

Engine

254.9 in model 213

1

Cap

2

Coolant hose

3

Air regulation system lower part

 Warning

Risk of injury due to fan starting unexpectedly

Do not reach into the rotation or hazard area of the fan. Wear closed and close-fitting work clothes.

AS20.40-Z-0001-01A

 Warning

Risk of injury. Skin or eye injuries may result when handling hot or glowing objects.

Wear protective gloves, protective clothing and safety glasses, if necessary.

AS00.00-Z-0002-01A

 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

Notes on avoiding damage through contamination and foreign objects

AH00.00-P-5000-01A

Topical note

Notes on coolant

AH20.00-N-2080-01A

Notes on coolant level

AH20.00-P-1142-01CW

Drain off

1

Open hood, carefully remove the cap (1) from the coolant expansion reservoir and release the overpressure.

2

Remove center engine compartment lining, front center engine compartment lining, and front right engine compartment lining.

AR61.20-P-1105LWE

3

Remove air regulation system lower part (3).

4

Remove coolant hose (2) from the cooler for the 48 V on-board electrical system and collect escaping coolant in a suitable container.

AR20.20-P-7441-01RQ

5

Install coolant hose (2) on the cooler for the 48 V on-board electrical system.

AR20.20-P-7441-01RQ

6

Install air regulation system lower part (3).

Pour in

7

Connect vehicle diagnosis system and switch on ignition.



AD00.00-P-2000-04B

8

Start fill mode of the coolant circuit for the 48 V on-board electrical system.

9

Pour in the coolant and bleed the coolant circuit for the 48 V on-board electrical system.

AR20.00-P-1142-04OLC


Do not fill engine cooling system without activating fill mode.
Proper distribution of the coolant is otherwise not ensured.

 Engine 254 in model 213.073
with code B01 (48V technology)Cooling system

*BF20.00-P-1001-06K

Test pressure for pressure-testing the engine cooling system

*BE20.30-P-1005-01A

 Cooler vacuum filling device

*285589002100

 Electric vacuum pump

*285589022100

 Pressure pump

*124589242100

 Test cap

*210589009100

 NTKL Adaption

*285589012100

10

End fill mode of the coolant circuit for the 48 V on-board electrical system.

11

Start bleeding routine of the coolant circuit for the 48 V on-board electrical system.

 This involves actuating the coolant pumps to remove residual air from the coolant circuit.

If the bleeding routine was not completed successfully:



Repeat bleeding routine of the coolant circuit for the 48 V on-board electrical system.

12

Switch off ignition and disconnect diagnostic system.



AD00.00-P-2000-04B

13

Check coolant level, correct if necessary.

 Coolant mixing ratio

*BF20.00-P-1001-04A

14

Install center engine compartment lining, front center engine compartment lining, front right engine compartment lining.

AR61.20-P-1105LWE

15

Screw the cap (1) onto the coolant expansion reservoir.

Radiator or expansion reservoir cap

Number

Designation

2-stage latch cover

BE20.30-P-1005-01A

Test pressure for pressure-testing the engine cooling system

Overpressure

bar

1,4

 Coolant mixing ratio

Number

Designation

Engine all (4xWD, CAR, smart)

BF20.00-P-1001-04A

Coolant mixing ratio

Antifreeze/water

Up to -37°C

%

50/50

As of -38 °C

%

55/45

Overview and specifications sheet

BB00.40-P-0310-01A

References to sheet specification

BB00.40-P-0310ZZ

 Cooling system

Number

Designation

Engine 254 in model 213.073

BF20.00-P-1001-06K

Cooling system

Total filling capacity

Liter

5,8

Antifreeze/water

to -37 °C

%

50/50

as from -38 °C

%

55/45

Sheet

BB00.40-P-0310-01A

Sheet

BB00.40-P-0325-00A

Sheet

BB00.40-P-0326-00A