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Home >> Mercedes Benz >> 2008 >> E550 Base >> Repair and Diagnosis >> Accessories & Equipment >> Exterior Lights >> Electrical System -- Testing & Repair -- E550 (211.072) >> Testing & Repair >> Remove/install fiber optic cable for the Media Oriented System Transport (MOST) - AR82.60-P-0001TJ

Remove/install fiber optic cable for the Media Oriented System Transport (MOST) - AR82.60-P-0001TJ

MODEL 211.0 /2 up to 1.6.08 except CODE (809) Model year 2009 between audio gateway control unit and radio/COMAND 

Shown on model 211.0 with code (527) COMAND APS (with navigation system) 

Fig 1: Identifying Fiber Optic Cable Module, COMAND Operating, Display And Controller Unit & Audio Gateway Control Unit
G07502830Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Ring sequence of the fiber optic cable for the Media Oriented System Transport (MOST), shown for maximum equipment 

Fig 2: View Of Ring Sequence Of Fiber Optic Cable For Media Oriented System Transport
G07502831Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
REMOVINGINSTALLING Remove/install     
IMPORTANT Notes on removal/installation of the fiber optic cable for the Media Oriented System Transport (MOST)   AH82.60-P-0001-06T
1.1 Remove radio (A2) or radio control panel and navigation unit (A2/56) Vehicles with code (523) MB Audio 20 radio or with code (521) MB Audio 50 radio USA (without navigation)
or code (525) MB Audio 50 APS radio
AR82.60-P-7502T 
1.2 Remove the COMAND operating, display and controller unit (A40/3) Vehicles with code (526) COMAND (without navigation) or code (527) COMAND APS (with navigation). AR82.85-P-1000T 
2 Remove left front floor covering   AR68.20-P-2050T
3 Remove cargo retainers in left rear legroom    
4 Remove left rear door sill molding    
5 Remove rear seat cushion Model 211.0 without code (287) Through-loading feature AR91.12-P-1020T
Model 211.0 with CODE (287) Through-loading feature AR91.12-P-1020TA
Model 211.2 AR91.12-P-1020TB
6.1 Remove side bolster and cover next to left rear seat backrest Model 211.0  
6.2 Remove side paneling on left side of rear compartment Model 211.2
IMPORTANT Only detach enough side paneling to allow cable duct in left rear to be fully opened.
AR68.30-P-4780T
7 Fully open left front and left rear cable ducts    
8 Remove fiber optic cable module for Media Oriented System Transport (MOST)   AR82.60-P-0001-01TJ 
NOTES Notes on avoiding damage to fiber optic cables during repair work   AH82.60-P-0001-05AK
9 Install in the reverse order    
10 Connect STAR DIAGNOSIS, read out fault memory and erase if necessary IMPORTANT Reconfigure MOST ring and perform "Restart of optical ring".  
REFER TO SELF-DIAGNOSTIC SYSTEMS Connect STAR DIAGNOSIS and read out fault memory   AD00.00-P-2000-04A
11 Carry out start-up and function test