Mercedes Benz C 300 4MATIC # LI82-85_P-0547162 Date: 130208 COMAND(R) - NTG 4, Intermittent No audio, 'Device Unavailable'

 Mercedes Benz C 300 4MATIC # LI82-85_P-0547162 Date: 130208
COMAND(R) - NTG 4, Intermittent No audio, 'Device Unavailable'
NTG 4 COMAND no audio on startup. Satellite Radio displays "Device Unavailable" when selected
Topic number L182.85-P-054716
Version 2
Design group 82.85 Navigation and communication Systems (CNS,
ICS, COMAND, FleetBoard)
Date 02-08-2013
Validity All Model 204, 207, 212 vehicles with NTG 4 Reason for
change noted that Xentry software newer than 09/12 will
work too.
Complaint:
Intermittently, no audio from any source on startup. Satellite Radio selection displays ~Device Unavailable on the COMAND
Resetting the CAN will bring back functionality most of the time.
Cause:
SDARs software on Telematics DVD A 212 827 82 59 & A 212 827 89 59 on SDARs part number A171 870 XX XX
Remedy:
  462
Backdate the SDAR's software using the following process:
1. Insert Telematics CD into COMAND
a. For model 212, 207 vehicles, use A 212 827 72 59
b. For model 204 vehicles, use A 204 827 95 59
2. Using Xentry software 09/2012 with Add-On 2521 or newer versions, flash the Telematics software.
Symptoms Table