Remove/install towing sensor control unit - AR54.21-P-0011GW

MODEL 463 as of model year 2013/model refinement package 2012 

Fig 1: Towing Sensor Control Unit Remove/Install Components

Courtesy of MERCEDES-BENZ USA

	Remove/install
	Information on preventing damage to electronic components due to electrostatic discharge		AH54.00-P-0001-01A
1	Detach ground line from battery		AR54.10-P-0003GW
2	Remove overhead control panel control unit	Place overhead control panel control unit with connected lines to one side.	AR82.20-P-1000GW
3	Detach electrical connection from ATA/tow- away protection/interior protection control unit (N26/6)
4	Install in the reverse order
5	Read out and erase the fault memory using Star Diagnosis		AD00.00-P-2000-04A