2011 e220 estate radio problem

[Makey]

Today I went to start car and the radio screen was blank . I can still hear radio but the volume up and down on steering wheel don’t work and a few button on radio numbers 1-6 rest work ,can move stations with control button and can turn music on and off but nothing on screen .
Any ideas or things to try
Thanks

 

[Makey]

update
disconnected battery . still same
checked fuses all ok
removed unit and check cables and tried wiggling incase loose still same
remove screen / disconnected and reconnected still same
at wits end. the radio works fine I can hear and change stations just nothing on screen
can you get replacement screens can you use one from old car or does it have to be new.
anyone got a place for screen

 

[Makey]

How long should I disconnect battery for to reset everything.

 

[gildeaa]

About 20 minutes should do the trick, if the screen turns out to be faulty I would suggest replacing with an Android screen which will give you a lot more options.
hope u get it sorted

 

[Makey]

Where do you get android screen from you have any links . Thanks
Also is there a way to test screen is working the one in pictures above

 

[Makey]

well tried a new screen that I know is working in car and that was blank also.
so thinking problem lies elsewhere.
what on reading odb2 machine to arrive
hopefully that picks up fault and somewhere to try or garage it goes.

 

[gildeaa]

Sorry to hear of your problem, must be something wrong with radio unit or wiring/plugs, there is a fuse in the back of the radio unit might be worth a check but if the radio starts up ok it is likely not the problem.
Comand online may be able to help you as they are members on here ie Alfie or Richard

 

[Makey]

will getting my car connected to someone with xentry software show faults with the audio unit and tell me what is faulty or will need to remove it and take it to main dealer or audio coder shop.

 

[gildeaa]

I am not sure if xentry will tell you much other than a faulty radio, my Comand stopped working altogether, Xentry just pointed out that the unit was indeed faulty and needed replaced main dealer charged for a diagnostic £160 and £2500 for a replacement Comand with screen, so it was the second hand route for me from the Bay and my Indie re coded it using xentry to the car.

 

[gildeaa]

Best going to an independent mercedes guy if you want the diagnostic test, but post Alfie or Richard who are on here they will give you the best advice

 

[Makey]

Hooked up odb reader got these messages
There are 1 issues for Safety and Security system:

1. The CAN message from control unit "CGW [ZGW]" is faulty.

There are 1 issues for Vehicle body system:
1. Communication with the control unit "Head unit" has a malfunction. The message is missing.

So just telling me what already now head unit not working .
M as ages yo find a mb coder locally going to call Tuesday and book it in. And also see about android /carplay if other screen is broken