My '04 E320 wagon has a dead instrument cluster. At first the instruments started resetting, the whole cluster would go dark while driving then immediately power up, the clock would reset by turning backwards. Occasionally the gauge cluster would be dark right after starting the car then it would power up after a minute or two of driving, reset clock and would be fine for a day or a few days. Now it's completely dead, no gauges, idiot lights or instruments ever.

So far I have:

Tested/charged main and auxiliary battery - batteries are good
Looked at central gateway for corrosion on connections - none
Looked at all the fuse panels, pulled fuses and re-seated, checked for corrosion - all seem OK

I have spent some time online researching but haven't found much in the way of conclusive info an where to go next. Was considering buying an icarsoft i980 scanner to help diagnose but not sure if that will help?

Any suggestions welcome.

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punkinfair