Remove and reinstall switch group at overhead control panel control unit - AR82.20-P-1005T

MODEL 211.0 /2 with CODE (383b) CP High telephone system with CODE (384) Phone preinstallation for USA with CODE (551a) Anti-theft alarm system (ATA) 

MODEL 211.6 with CODE (551a) Anti-theft alarm system (ATA) 

Fig 1: Identifying Overhead Control Panel Control Module Switch Group Components

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

	Remove/Install
1	Remove inside rearview mirror		AR68.40-P-0001T
2	Disconnect electrical connector (1) for SOS/ ATA switch group (S93/3) at overhead control panel control unit (N70)
3	Using a suitable screwdriver, release SOS/ ATA switch group (S93/3) at retaining lugs (arrows)	Use care when releasing retaining lugs (arrows) to prevent them from breaking
4	Install in the reverse order