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Home >> Mercedes Benz >> 2021 >> A220 Base >> Repair and Diagnosis (Single Page) >> Transmission >> Transmission Control Systems >> Automatic Transmission - 177 Chassis (1 Of 2) >> Testing & Repair >> Remove/Install All-Wheel Drive Control Unit >> (Remove/Install All-Wheel Drive Control Unit - AR27.19-P-1720MFA)
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(Remove/Install All-Wheel Drive Control Unit - AR27.19-P-1720MFA)

Transmission 724.1 in model 118, 177, 247 

with code M005 (Vehicles with 4MATIC/all-wheel drive) 

G15491577Courtesy of MERCEDES-BENZ USA

Shown on model 177.0 

G15491578Courtesy of MERCEDES-BENZ USA
WARNING Risk of injury  caused by fingers being jammed or pinched when removing, installing or aligning hoods, doors, trunk lid/rear-end door or sliding roof. No parts of the body or limbs should be within the operating area when the components are moving. AS00.00-Z-0011-01A
Notice  Information on preventing damage to electronic components due to electrostatic discharge   AH54.00-P-0001-01A
  Notes on HANDS-FREE ACCESS   AH80.61-P-0001-01A
REMOVINGINSTALLING Remove/install     
1 Switch off ignition and store transmitter key outside of transmitter range (min. 2 m).    
2 Remove left and right side trunk lining. Transmission 724.1 in model 247.6
with code M005 (Vehicles with 4MATIC/all-wheel drive)
AR68.30-P-4801MFX
    Transmission 724.1 in model 118.3, 177.1/9 with code M005 (Vehicles with 4MATIC/all-wheel drive) AR68.30-P-4800MFV
    Transmission 724.1 in model 118.6 with code M005 (Vehicles with 4MATIC/all-wheel drive) AR68.30-P-4800MFD
    Transmission 724.1 in model 247.0/7 with code M005 (Vehicles with 4MATIC/all-wheel drive) AR68.30-P-4800MFB
    Transmission 724.1 in model 177.0 with code M005 (Vehicles with 4MATIC/all-wheel drive) AR68.30-P-4800MFA
3 Remove speaker amplifier control unit. Transmission 724.1 in model 118, 177, 247.0/7
as of model year 2022
with code 810 (Premium sound system)
with code M005 (Vehicles with 4MATIC/all-wheel drive)
except code 853 ("Midline" sound system)
AR82.62-P-7720MFD
    Transmission 724.1 in model 118, 177, 247
as of model year 2022
with code 853 ("Midline" sound system)
with code M005 (Vehicles with 4MATIC/all-wheel drive)
AR82.62-P-7720MFC
    Transmission 724.1 in model 247.6
with code 810 (Premium sound system)
with code M005 (Vehicles with 4MATIC/all-wheel drive)
except code 853 ("Midline" sound system)
AR82.62-P-7720MFX
    Transmission 724.1 in model 118, 177, 247.0/7
up to model year 2021
with code 810 (Premium sound system)
with code M005 (Vehicles with 4MATIC/all-wheel drive)
except code 853 ("Midline" sound system)
AR82.62-P-7720MFB
    Transmission 724.1 in model 118, 177, 247
up to model year 2021
with code 853 ("Midline" sound system)
with code M005 (Vehicles with 4MATIC/all-wheel drive)
AR82.62-P-7720MFA
4 Remove support (5).    
5 Remove nuts (1).    
6 Lift holder (2) far enough until the nuts (3) and the electrical connector (4) are accessible. NOTES
Do not crush or kink or subject lines to tension This leads to damage to the lines and impairs their function.
 
7 Remove nuts (3).    
8 Release and disconnect electrical connector(4).    
9 Detach all-wheel drive control unit (N15/17) from holder (2) and remove upwards.    
10 Install in the reverse order.    
11 Perform commissioning of all-wheel drive control unit (N15/17). When replacing the all-wheel drive control unit (N15/17).  
REFER TO SELF-DIAGNOSTIC SYSTEMS     AD00.00-P-2000-06MFA