Remove/Install Control Unit For Emergency Call System - AR82.95-P-1005LWX

Model 253 

with code 348 (Emergency call/assistant system) 

Fig 1: Control Unit For Emergency Call System Components Location - Model 253 With Code 348

Courtesy of MERCEDES-BENZ USA

	Information on preventing damage to electronic components due to electrostatic discharge		AH54.00-P-0001-01A
	Remove/install
1	Carry out initial startup of emergency call system control unit (N123/4)	When replacing emergency call system control unit (N123/4).
			AD00.00-P-2000-04B
2	Switch off ignition and store transmitter key outside of transmission range (min. 2 m)
3	Remove right front seat		AR91.10-P-1000LW
4	Remove seat cushion in rear		AR91.12-P-1020LW
5	Remove cover on lower right B-pillar		AR68.30-P-4700LW
6	Remove door sills at front and rear right		AR68.30-P-4100LW
7	Remove right rear air duct
8	Fold up floor covering in rear at right
9	Disconnect electrical connectors (1, 2, 3, 4, 5)	The number can vary according to the equipment.
10	Remove emergency call system control unit (N123/4)
11	Install in the reverse order