Yes i have a cdc3 tb in my setup. Which works with my ncdr perfectly.
That gives an option
Safe display means the cid is in an unpaired state doesnt it?
It means the display has not managed to negotiate the security, not just it may not have a code. It could have a wrong code.
The auto electrition i know of has tech2 and eprom.
But not the knowledge I suspect.
What concerns me is that this has happened, supposedly, during an LCD replacement. I do struggle to understand how that could happen. Changing the LCD is very easy, it shouldn't need to go anywhere near a tech2. I really am struggling to see how any config could have got changed. I am suspicious we don't know the full story here.
Do you trust this guy? Is he compitent (I always hear alarm bells when I here the phrase Auto Electrician)?
Something is amiss here.
I have invested a considerable sum of time and money in understanding/cracking this system. I am unable to give people that information, nor am I in a position to fix the coding issues for free
In this case, can you get a code reader on the cid, go to Live Data, and find out the Security status:
Delivery Mode
I.D. OK
I.D.NOK
On Tech2 Live data, its the setting below the battery voltage.