Remove/install telematics services communications module control unit - AR82.85-P-0020NKX

MODEL 117 with CODE 350 (Ecall emergency call system, Europe) 

MODEL 117 with CODE B54 (Live Traffic Information) 

MODEL 156 with CODE 347 (Mercedes-Benz emergency call system) 

MODEL 156 with CODE 348 (Emergency call/assistant system) 

MODEL 156 with CODE B54 (Live Traffic Information) 

MODEL 246 with CODE 06U (Mercedes connect me standard services) 

MODEL 246 with CODE 350 (Ecall emergency call system, Europe) 

Shown on model 156 

Fig 1: Identifying Telematics Services Communications Module Control Unit Remove/Install Components - Shown On Model 156

Courtesy of MERCEDES-BENZ USA

Shown on model 246 as of model year 2015 

Fig 2: Identifying Telematics Services Communications Module Control Unit Remove/Install Components - Shown On Model 246

Courtesy of MERCEDES-BENZ USA

	Information on preventing damage to electronic components due to electrostatic discharge		AH54.00-P-0001-01A
	Remove/install
1	Switch off ignition and remove transmitter key
2	Remove glove compartment (1)	MODEL 246	AR68.10-P-1400NKB
		MODEL 117, 156	AR68.10-P-1400NKA
3	Remove bolts (2)
4	Press together retaining clamp (3) and remove telematics services communications module (N112/2) from guide toward front	MODEL 117, 156
5	Take out telematics services communications module (N112/2) until electrical connectors (4, 5) are accessible
6	Disconnect electrical connector for the global positioning system and Global System Mobile at the telematics services communications module (N112/2)	The number of electrical connectors may vary depending on the equipment.
7	Release and disconnect electrical connectors (4, 5) and remove telematics services communications module (N112/2)	The number of electrical connectors may vary depending on the equipment.
8	Install in the reverse order
	Check
9	Connect diagnostic system and read out fault memory
			AD00.00-P-2000-04A