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Home >> Mercedes Benz >> 2025 >> S580 >> Repair and Diagnosis >> Engine Mechanical >> Mechanical >> Air Intake, Turbocharging (1 Of 2) -- 223 Chassis >> Testing & Repair >> Remove/Install Low-Temperature Circuit Expansion Reservoir - AR09.41-P-0001SVZ

Remove/Install Low-Temperature Circuit Expansion Reservoir - AR09.41-P-0001SVZ

Engine 279 in model 223 

G16190137Courtesy of MERCEDES-BENZ USA
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 overpressure. Do not pour coolant into beverage containers.
Wear protective gloves, protective clothing and safety glasses.
AS20.00-Z-0001-01A
Notice  Notes on coolant   AH20.00-P-2080-01KOA
  Notes on coolant level   AH20.00-P-1142-01CW
REMOVINGINSTALLING Remove/install     
1 Remove engine cover. INSTALLATION IMPORTANT : Install engine cover only after the engine test run. AR01.10-P-2405SVZ
2 Carefully open cap (2) of low-temperature circuit expansion reservoir (1), release overpressure, and remove cap (2).    
3 Suction off the coolant out of the low-temperature circuit expansion reservoir (1). SPECIAL TOOL Hand pump Fig 1
4 Remove screws (3).    
5 Remove low-temperature circuit expansion reservoir (1) from coolant hose (4) and take off. IMPORTANT Capture escaping coolant using suitable means. AR20.20-P-7441-01RQ
6 Seal coolant hose (4) with suitable protective cover. SPECIAL TOOL Set of protective covers Fig 2
7 Install in the reverse order.    
INSPECT Check     
8 Check coolant level and correct if necessary. FLUID SPECIFICATION Cooling system *BF20.00-P-1001-02GA 
9 Check low-temperature circuit for leak tightness.   AR09.41-P-1011SVZ 
COOLING SYSTEM

Number Designation Engine 279 in model 223
BF20.00-P-1001-02GA Cooling system Workshop replacement amount Main circuit Liter ≈16, 0
Low-temperature circuit Liter ≈5, 0
Antifreeze/water Down to -37°C % 50/50
-38°C and below % 55/45
Specifications BB00.40-P-0310-01A
Specifications BB00.40-P-0325-06A
Specifications BB00.40-P-0326-06A
Fig 1: Identifying Hand Pump (210 589 00 71 00)
G07742725Courtesy of MERCEDES-BENZ USA
Fig 2: Identifying Set Of Protective Covers (001 589 11 91 00)
G14785720Courtesy of MERCEDES-BENZ USA