W203 COMAND flickers and turn itself off..
Thread Starter
Member
Joined: Feb 2006
Posts: 123
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From: Hong Kong
'02 C32; '02 M5; '08 328i (US)
W203 COMAND flickers and turn itself off..
Had my batt replaced recently, OEM batt. The shop said they didn't touch anything else, but now my COMAND would sometimes flickers a little (like it has some sort of interference), and it would sometimes turn itself off and then on. Doesn't happen all the time, like today, I drove for an hour without any issue, then all of the sudden, it turned itself off and on every 5 mins or so. What would possibly be the problem? I don't think the COMAND is faulty, it almost seems like the currents aren't stable?
A little background on the COMAND unit though.. I had the Dension Gateway 500 installed to the COMAND, but the shop managed to broke the CD power wire, so instead, they hook up the CD changer to the COMAND power as well. All was well until the batt replacement, could this be the issue? Thanks!
A little background on the COMAND unit though.. I had the Dension Gateway 500 installed to the COMAND, but the shop managed to broke the CD power wire, so instead, they hook up the CD changer to the COMAND power as well. All was well until the batt replacement, could this be the issue? Thanks!
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Joined: Dec 2004
Posts: 3,063
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From: Tampa, FL
2005 S500 4-Matic, 1978 450SL
It could be the issue. If your CDC power is being lost because of a bad connection, it would shut down - and loss of a component on the fiber optics bus can cause loss of the entire bus, under some circumstances.
That connection is the first thing I would check. And I would also restore the CDC to its own power wire as well.
That connection is the first thing I would check. And I would also restore the CDC to its own power wire as well.
Thread Starter
Member
Joined: Feb 2006
Posts: 123
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From: Hong Kong
'02 C32; '02 M5; '08 328i (US)
Fixed the CDC connections to C1 pin 5 and 6, but looks like it still shuts down randomly 
What else could be the problem? It really isn't shutting down either, the dash audio display shows "----" instead of "OFF" so I guess it's restarting itself instead. But sometimes, it won't boot again until I press the power button on the COMAND too Any idea?
What else could be the problem? It really isn't shutting down either, the dash audio display shows "----" instead of "OFF" so I guess it's restarting itself instead. But sometimes, it won't boot again until I press the power button on the COMAND too Any idea?
