No gear display,no mode switch and manual mode for 04' E500 4Matic

Currently I drove this E500 for almost one month but there is no gear display around the odometer when the engine is started.Also,there is no response when I switch C/S mode or go into manual mode.I brought the car to a Mercedes-Benz dealership.They did not check out anything and charged me nothing. They told me that they were seeking technical support from MB USA but they did not respond after two weeks. The dear said that it should not be a matter of hardware but software.However, the transmission works fine.I come here and want to know anybody here met the similar problem.If so, how did you solve it?
Thanks
There is currently one case going on in diagnostic oriented forum, where memeber accidently coded his IC wrong, after gear display disappeared. There IS a option in DAS developer which should affect that, but that case it have had no avail.... I'll keep you updated if solution is found there.
This is always occurring on my car.
For my car, I have those two dashed lines in kmh but without them in mph.Also, have you felt any difference without gear display?I think I am locked in automobile and cannot log into manual mode.
Last edited by mersum1es; Nov 2, 2015 at 12:08 PM. Reason: typo
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https://mbworld.org/forums/e-class-w...t-cluster.html
there was three threads about the issue

And of course there are still other places which may be wrong
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