Thanks mate, I'm in WA on other side. Appreciate the thought.If you're in Sydney or nearby happy to have a look at it. Gateways very very rarely fail.
I have a spare CCM can test it after transferring immo data from your original.
Checked your autoscan you have KESSY...mine is non-KESSY
So you need any 3AA Kessy CCM with the correct frequency radio (so anything from Eu or Aus.)
You can get one cheap enough online then you'll need to transfer your immo data over. For that you'll just need to read the eeprom out and use a free tool to copy the immo data from one to the other. If you can't find someone locally who can do that you could send your original and a replacement to me I can do it and send it back. But you'll be unable to use the car in the interim...
That's what I thought as the Start Button works just fine. I have worked out that shorted ground somehow cuts power from module to module as it jumps up the chain to protect the next component. There is 12V in the system and after I get home today will disconnect power altogether and unplug CCM and discharge.Looking at the wiring diagram, SC15 is also shared with the RLS and engine start button control unit. Since the RLS is present and the car presumably starts via the center console button, then fuse SC15 can be ruled as OK.
Don't remember if I've asked but is there actual +12v present behind the climate panel? There's a thicker red/black wire next to an equally thick brown wire. Also if there is continuity between the brown lead and a bare metal chassis part in the car?