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Home >> Mercedes Benz >> 2019 >> S450 Base >> Repair and Diagnosis (Single Page) >> Body & Frame >> Towing Systems >> Frame, Trailer Operation - 222 Chassis >> Testing & Repair >> Remove/Install Trailer Recognition Control Unit - AR31.19-P-1300LF
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Remove/Install Trailer Recognition Control Unit - AR31.19-P-1300LF

Model 222.0/1 

with CODE 550 (Trailer coupling) 

G15367042Courtesy of MERCEDES-BENZ USA
DANGER 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
NOTES Information on preventing damage to electronic components due to electrostatic discharge   AH54.00-P-0001-01A
IMPORTANT Notes on sensor system for trunk lid opening/closing   AH80.61-P-0001-01A
REMOVINGINSTALLING Remove/install     
1 Switch off all electrical consumers and the ignition    
2 Remove right paneling in trunk   AR68.30-P-4600LF
3 Unscrew plastic nut (2)    
4 Remove bolts (1) and remove bracket (3) with trailer recognition control unit (N28/1) far enough to gain access to the electrical connections (5)    
5 Detach electrical connections (5) and remove bracket (3) with trailer recognition control unit (N28/1) from vehicle    
6 Undo nuts (4) and remove trailer recognition control unit (N28/1) from bracket (3) Only when replacing trailer recognition control unit (N28/1).  
7 Install in the reverse order