I've had this c250 for about 7,000 miles now and absolutely zero issues, I love it! Until a few days ago I started the car up and the screen was white. During night driving the display is completely white and daytime driving it fades in and out from barely visible to not visible.



Here's what it's doing in the day as a best case scenario:



I checked for the radio fuses (26/84) and my car didn't have a fuse in the 84 slot so I pulled 26 and verified the unit didn't work without it. Plugged it back in after a visual inspection and about a minute and problem still persisted. I tapped around on the display to see if there was more of a physical issue (IDK). I'm not sure if this is a bad display, but I haven't messed with any wiring or made any significant changes recently so I'm out of ideas. Anybody dealt with this before? I can't find anything searching for the screen going white. Thanks for taking the time to read this if you made it this far!

 

Check the display wire connection.

 

Possible it might be some broken or weak solder traces on the LCD itself. If so, you would have to gain access to the LCD. There should be one or two dark orange-ish tails with a lot of copper traces on them. That could cause the intermittent display you are seeing. If that is the cause, it is a very rare failure. Just spitballing here. Any kind of evidence that maybe the dash or display itself had been taken out? If so, maybe that is when it happened.