Remove/Install Telematics Services Communications Module Control Unit - AR82.85-P-0020RG

Model 190.3 

With Code B54 (Live Traffic Information) 

Fig 1: Telematics Services Communications Module Control Unit Components Location - Model 190.3 With Code B54

Courtesy of MERCEDES-BENZ USA

Topical note	Information on preventing damage to electronic components due to electrostatic discharge		AH54.00-P-0001-01A
	Notes on sensor system for trunk lid opening/closing		AH80.61-P-0001-01A
	Remove/install
1	Perform initial startup of telematics services communications module (N112/1)	When replacing telematics services communications module (N112/1).
			AD00.00-P-2000-04B
2	Move driver's seat and front passenger seat toward front to end position
3	Switch off ignition and store transmitter key outside of transmission range (min. 2 m)
4	Remove strut tower brace		AR64.20-P-0010RG
5	Remove side trim in rear passenger compartment on right		AR68.30-P-4780RG
6	Loosen rear panel trim in upper right side area		AR68.30-P-4750RG
7	Loosen cover (1) and place to one side
8	Release and disconnect electrical connectors (2)
9	Unscrew nuts (3)
10	Remove the telematics services communications module (N112/1)
11	Install in the reverse order