Bit of a long shot - 18058 fault code

[GJF47]

A couple of weeks ago the instrument cluster died in my Fathers SEAT Toledo T Sport. There were no lights, speedo, revs, etc working at all. I ran a scan with VagCom and it brought up:

18058- powertrain data bus missing message from instrument cluster

We bought a used cluster from a local scrapyard but it needs recoding to work with the car. While trying to get the pin code from the original cluster using VagTacho, I noticed the lights on the cluster were all flashing as it was trying to read the pin. Obviously, the cluster is not dead we thought. But when I run a scan with VagCom, there are no lights working at all, nor do they work when the car is being used.

Any ideas what is causing the cluster not to work? We went from thinking it was completely dead to seeing the lights flashing so there must be something working there. I am pretty desperate to sort this problem out now as VagTacho could not read the pin code so I have run out of options :(

[Giraffe]

Don't know how all that jazz works, but have you checked that there is power getting to the instrument cluster, and have you checked the fuses?

[GJF47]

The fuses are all fine mate. There must be power because we tried a second hand cluster from the scrappies and all the lights came on but obviously the car wouldn't start because of the immobiliser. That is what made us think the original cluster was dead but after seeing all the lights flashing on it when trying to get the SKU code then we thought it must be working :geek: