Remove/install navigation processor - AR82.85-P-7373TX

MODEL 219.3 up to 2.3.08 except CODE (809) Model year 2009 with CODE (527) COMAND APS (with navigation) with CODE (530) COMAND APS USA (with navigation system) 

Fig 1: Identifying Navigation Processor 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	Buffer basic data of navigation processor (N41/1) in STAR DIAGNOSIS	When installing new navigation processor (N41/1). Transfer basic data from STAR DIAGNOSIS to new navigation processor (N41/1).
	Connect STAR DIAGNOSIS and read out fault memory		AD00.00-P-2000-04TX
2	Open the cover (1)
3	Insert removal tools (2) into navigation processor (N41/1)	Pay attention to "TOP" marking on removal tools (2).
4	Pull navigation processor (N41/1) on removal tool (2) out toward the front until the electrical connectors (4) and the electrical connector with fiber optic cable (3) on the rear of the navigation processor (N41/1) are accessible	Make sure that, when sliding in the navigation processor (N41/1), the electrical connector with fiber optic cable (3) and the electrical lines (4) are not pinched and thereby damaged.
5	Disconnect electrical connectors (4) and electrical connector with fiber optic cable (3) on rear of navigation processor (N41/1)
	Notes on avoiding damage to fiber optic cables during repair work	With Media Oriented System Transport (MOST)	AH82.60-P-0001-05TX
6	Remove navigation processor (N41/1) from luggage compartment
7	Push back retaining springs (5) at left and right on navigation processor (N41/1) and pull out the removal tools (2)
8	Install in the reverse order