There's 54 different channels on the GTI climatronic, a couple of them don't do anything.
The list Max posted are all true, and me and Alex came to the conclusion channel 24 MAY be the oil temp. For it measured 38.7C when the engine was running at 90C. further test to be carried out.
Here's a pic of what it looks like:
01 is the channel number, which in this case is the Interior Temperature
28C is the reading. So it was 28C in my car at that point!
You can change which diagnostic number by pressing the temperature buttons on the unit.
You can alter the readings on some channels by pressing the fan up and down buttons on the unit, for example this one:
It's the first channel, so it's classed as '0'. It controls the fan speeds.
Here it is currently set at 37, but it could run from 0-255 (IIRC).
And here's a video of channel 16, speed sensor
It's measured in Kilometers,
https://www.youtube*.com/watch?v=j8bmnpdjSK0
Sorry about the shakey filming, i was going down my bumpy drive. Also notice I have no 'filming and changing gear at the same time' skills and put it in forth instead of second haha, it gives you an idea though.
I'll get a better video when my brother gets back and can hold it for me
