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Home >> Mercedes Benz >> 2025 >> S580 >> Repair and Diagnosis >> Engine Mechanical >> Cooling System (Mechanical) >> Engine -- Cooling System (1 Of 2) -- 223 Chassis >> Testing & Repair >> Remove/Install Cooling System Fan Unit >> Remove/Install Cooling System Fan Unit - AR20.40-P-5050SVZ

Remove/Install Cooling System Fan Unit - AR20.40-P-5050SVZ

Engine 279 in model 223 

G16190604Courtesy of MERCEDES-BENZ USA
G16190605Courtesy 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 
CAUTION Risk of injury  caused by scraping or cutting body parts on sharp vehicle parts Always wear protective gloves when working on or near sharp and non-deburred vehicle parts.
Deburr repair panels.
AS00.00-Z-0017-01A
Notice  Information on preventing damage to electronic components due to electrostatic discharge   AH54.00-P-0001-01A
Notice  Notes on avoiding damage through contamination and foreign objects   AH00.00-P-5000-01A
REMOVINGINSTALLING Remove/install     
1 Drain coolant of low-temperature circuit.   AR09.41-P-6834SVZ
2 Drain coolant of high-temperature circuit.   AR20.00-P-1142SVZ 
3 Remove left and right air intake lines (1). SPECIAL TOOL Dismantling tool Fig 1
4 Remove air intake scoop (2). SPECIAL TOOL Dismantling tool Fig 1
5 Remove left and right sealing frames (3). SPECIAL TOOL Dismantling tool Fig 1
6 Unscrew screws (4) and remove upper crossmember (5) together with both threaded plates (6). TORQUE SPECIFICATION Screw, front module cross strut to crossmember *BA62.30-P-1005-01G 
7 Remove retaining clips (7).    
8 Unclip electrical wiring harness (8) from cooler unit. NOTES
Do not crush or kink electrical wiring harness (8) or subject it to tension.
This will result in damage to the electrical wiring harness (8) and may impair its function.
SPECIAL TOOL Dismantling tool
Fig 1
9 Release and disconnect electrical connector (8.1) and place electrical wiring harness (8) to one side.    
10 Remove coolant lines (9, 10, 11, 12) from cooler and seal openings with protective covers.   AR20.20-P-7441-01RQ 
    SPECIAL TOOL Set of protective covers Fig 2
    SPECIAL TOOL Set of protective covers Fig 3
11 Unscrew screw (13), unclip holder (14) from radiator support, and place low-temperature circuit switchover valve (Y73/1) to one side with coolant lines connected.    
12 Unclip coolant line (12) from fan (M4/7).    
13 Unclip fan (M4/7) upward from holders (arrows) and remove fan (M4/7) upward.    
14 Install in the reverse order.    
CROSS MEMBER AND FRONT REINFORCEMENT

Number Designation Model 223
BA62.30-P-1005-01G Screw, front module cross strut to crossmember M6 Nm 8
Fig 1: Identifying Dismantling Tool (000 589 95 63 00)
G16190606Courtesy of MERCEDES-BENZ USA
Fig 2: Identifying Set Of Protective Covers (001 589 06 91 00)
G14785718Courtesy of MERCEDES-BENZ USA
Fig 3: Identifying Set Of Protective Covers (001 589 11 91 00)
G14785720Courtesy of MERCEDES-BENZ USA