Remove/install operating/display unit with control unit - AR82.85-P-7472I

MODEL 220 up to 31.8.02 with CODE (352a) COMAND operating and display system 

Fig 1: Identifying Operating/Display Unit With Control Unit And Bolts

Courtesy of MERCEDES-BENZ USA

	Remove/Install
1	Connect no load current retention unit		AR54.10-P-1030-07I
		CMP 12.2 quiescent current retention unit	*WH58.30-Z-1012-09A
	Risk of explosion  caused by escaping oxyhydrogen gas. Risk of injury  caused by caustic burns to eyes, skin and mucous membranes from battery electrolyte (contains diluted sulfuric acid) or metal spatter due to short circuit. Risk of burn injuries  caused by short circuit. Risk of poisoning  caused by swallowing battery electrolyte (contains diluted sulfuric acid) or absorption of lead over the skin or orifices	No fire, sparks, open flames or smoking. Wear acid-resistant gloves and clothing and safety glasses with side guards. Do not place any conductive objects on the battery and avoid any short circuit from battery positive to ground. Only fill liquid battery electrolyte (diluted sulfuric acid) into suitable and appropriately marked containers.
2	Disconnect ground cable of battery
	Notes on battery
	Notes on AGM battery	Model 220.028 with CODE (450) Taxi version. Models 220.070/075/175/178/875/878 as of 1.1.01.
3	Remove cover on center console
4	Unscrew bolts (1) and pull out COMAND operating, display and control module (40/3)	Use screwdriver with magnetic tip on bolts not easily accessible
5	Disconnect electrical connectors
6	Install in the reverse order