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Discussion Starter · #1 · (Edited by Moderator)
Does anyone know what can be the cause of rns850 screen blinking and going totaly black?

It happens really random, even if the car is parked and running it might suddenly start blinking and then shutdown after 15mins or two days it starts working again.

The unia itself works all the time. I can even answer phone calls by tappiot the top corner of black screen.

Car is 2010 7p treg if it matters.

https://youtube.com/shorts/AmBoxWg8llI?feature=share Here is the video of problem
 

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Hi had a similar problem on my 2011 treg.
Everything worked except for the screen.
I sourced a replacement screen only to find that it was the control unit in the glove box.
VW wanted £1200 for a new one - I sourced a used one of ebay. Base part number is
7P6035670
If it has a C suffix or later it is a 3G version.
The only other problem is that you need to programme it to your treg.

If you're lucky it might be just a loose connection to that unit.
 

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Where is that possible loose connection what you are thinking? In the glove box?
Yes - most likely in the control unit in the glove box. ????
 
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