Sorry guys, I need your help.
I was planning to connect some wires to my canbus cable today on my 08 MK 5 GTI so late yesterday afternoon, I removed the can bus cable but didn't realise that I had to disconnect the battery first :( Also I didn't have VAGcom so I wasn't able to record the existing installed items.
I removed the negative battery terminal this morning, connected the wires (using the existing canbus) and put everything back to together and then reconnected the battery. The car started with no problems, I had a few warning lights come on but they all went away after a minute.
I plugged in my friends diagnostic system to check fault codes (there were a few like 1305 data bus display open circuit) but I managed to reset most of them. The only fault I can't seem to reset is 01044 control unit incorrectly coded.
Have I lost the coding settings? If so, what I have car functions have I lost and how would I need to do to fix.
Any help would be be appreciated.
