Remove/install satellite radio control unit - AR82.60-P-7545RT

MODEL 251 with CODE (491) USA version with CODE (536) SIRIUS satellite radio with CODE (808) Model year 2008 

Fig 1: Identifying Satellite Radio Control Unit Remove/Install Components

Courtesy of MERCEDES-BENZ USA

	Remove/install
	Notes on avoiding damage to electronic components due to electrostatic discharge	All models	AH54.00-P-0001-01A
1	Turn key in ignition switch to position "0".	On vehicles with Keyless-Go, code 889: Press keyless go start/stop button repeatedly until ignition is switched off
2	Remove rear seat	2nd seat row, right.	AR91.12-P-1000RT
3	Remove door sill molding	Only right rear.	AR68.30-P-4100RT
4	Remove paneling on B-pillar	Lower section only. Only on vehicles with center rear individual seat, code 225.	AR68.30-P-4700RT
5	Unclip anchoring lug cover
6	Unscrew bolt beneath		*BA68.50-P-1001-03G
7	Remove anchoring lug	Ensure that guide lugs are installed correctly.
8	Unclip rear seat rail covers from front seat
9	Lift center floor cover
10	Unclip brackets (1)
11	Remove nuts (2)
12	Remove intermediate bottom (3)
13	Separate electrical connectors (4)
14	Remove nuts (5)
15	Remove SDAR control unit (N87/5)
16	Install in the reverse order