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Remove/Install Right Trailer Hitch Longitudinal Member - AR31.30-P-0006MFD

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Model 118, 177.0/1, 247 with code 550 (Trailer coupling) 

G16049844Courtesy 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  Notes on self-locking nuts and bolts   AH00.00-P-0001-01KOA
Notice  Notes on installing a trailer hitch   AH31.10-P-1000-02CW 
  Notes on HANDS-FREE ACCESS   AH80.61-P-0001-01A
REMOVINGINSTALLING Remove/install     
1 Remove trailer hitch (1). INSTALLATION IMPORTANT Align trailer hitch (1). AR31.10-P-8000MFA 
2 Remove nuts (3). INSTALLATION IMPORTANT Tighten nuts (3) only after the trailer hitch (1) has been aligned.
TORQUE SPECIFICATION Nut, longitudinal member reinforcement for trailer hitch to body
*BA31.11-P-1002-01K 
3.1 Remove sound system amplifier control unit with lines connected and place to one side. Model 177.0, 247.0/7 with code 550 (Trailer coupling) with code 810 (Premium sound system) except code 853 ("Midline" sound system)
Model 177.0, 247.0/7 with code 550 (Trailer coupling) with code 853 ("Midline" sound system)
Model 177.0, 247.0/7 as of model year 2022 with code 550 (Trailer coupling) with code 853 ("Midline" sound system)
AR82.62-P-7720MFC
    Model 177.0, 247.0/7 up to model year 2021 with code 550 (Trailer coupling) with code 853 ("Midline" sound system) AR82.62-P-7720MFA
    Model 177.0, 247.0/7 as of model year 2022 with code 550 (Trailer coupling) with code 810 (Premium sound system) except code 853 ("Midline" sound system) AR82.62-P-7720MFD
    Model 177.0, 247.0/7 up to model year 2021 with code 550 (Trailer coupling) with code 810 (Premium sound system) except code 853 ("Midline" sound system)
NOTES Do not crush or kink or subject electric lines to tension.
This will result in damage to the electric lines and can impair their function.
INSTALLATION IMPORTANT Tighten screw (5) first before installing sound system amplifier control unit.
AR82.62-P-7720MFB
3.2 Remove spare wheel well trim. Model 247.6 with code 550 (Trailer coupling)
INSTALLATION IMPORTANT Install spare wheel well trim only after screw (5) is tightened.
 
4 Remove screw (5). INSTALLATION IMPORTANT Tighten screw (5) only after trailer hitch (1) has been aligned.
TORQUE SPECIFICATION Screw/bolt, longitudinal member reinforcement for trailer hitch to body
*BA31.11-P-1003-01K 
5 Remove right longitudinal member (2) of trailer hitch (1).    
6 Install in the reverse order.    
INSPECT Check     
7 Check function of trailer hitch (1) with electrical release.   AR31.19-P-1451MFA 
8 Check function of lighting signals on trailer hitch mains outlet (1).    
TRAILER COUPLING MECHANISM

Number Designation Model 118, 177, 206, 243, 247
BA31.11-P-1002-01K Nut, longitudinal member reinforcement for trailer hitch to body Nm 55
TRAILER COUPLING MECHANISM

Number Designation Model 118, 177, 206, 243, 247
BA31.11-P-1003-01K Screw/bolt, longitudinal member reinforcement for trailer hitch to body Nm 140