2008 C-350 Radio/Command Module Not Turning On (fuses test good)
#1
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Mercedes GL450
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I think this may have happened after I jumped from the car sitting for a few months. Everything turns on in the center module except for the radio and the screen that displays the radio. Going through the forums I saw other people having the same issue but it was fixed using the methods below which I have already tried. Next try was going to be hiring someone to remove the command center/radio (since requiring special tools) and check the fuse behind it as well as check wires. Before I pay someone was hoping to see if anyone else knew how to fix this without pulling the command unit out. Any help would be appreciated, thanks!
Tried:
Testing radio fuses 26 and 84
Testing command fuse 11
Removing and reinserting fuses in hopes to reset command
Disconnecting positive battery terminal then reconnecting
Next:
Remove the stereo unit, check the small fuse on the very back under the electrical connections
Tried:
Testing radio fuses 26 and 84
Testing command fuse 11
Removing and reinserting fuses in hopes to reset command
Disconnecting positive battery terminal then reconnecting
Next:
Remove the stereo unit, check the small fuse on the very back under the electrical connections
#3
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Thanks I called the dealer and they told me $178 just to diagnose. According to another user the dealer they went to told them they needed to replace the whole command unit when it was just the fuse behind it.
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Update: It was the fuse behind the command module in the dash just FYI. The radio fuse is smaller than the other fuses so make sure you get the correct size.
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