I knew I had a problem with my air on the D2. Not losing air but the compressor wouldn't lift it.
I reconditioned the compressor and it now works perfectly, so I'm chuffed with that.

But, when setting up the height using Nanocom I was confused by the stored height values of 135 & 122. What did they refer to? Height in mm? Rotational degrees on the sensor?
I found this excerpt from a Nanocom PDF which explains.

• This results in a numeric value between 0 and 255 being obtained by the SLABS ECU which represents the relative height of the corner. In real terms, each number is worth approximately 1.4mm of motion.
  

Hopefully that explains the values - in case you ever wondered.

That's grand, come in handy when I get round to reinstating mine!

Are you sure your airbags are in good order?
Just wondering as your compressor needed tlc, has it been overworked holding leaky bags up?

Those values are not very relevant cos they can differ from one vehicle to another based on various factors, important is to lift the body on plain ground as to be 100% horizontal and store those heights regardless of the numbers..

I agree, I didn't mean for my figures to be used, just that I didn't know what they related to.
More importantly, how would I know what to adjust them by other than trial and error?
Now that I have info of 1.4mm height per digit change I can work it out. Although I'm a bit sceptical of this figure too but I'll play with it and see.

No, my airbags are fine. I've had the car for over a year and they don't sink. They just never inflated with the off-road button nor adjusted up or down at start up and switch off. The compressor worked but the piston ring obviously didnt provide a good seal so no air pressure to the bags.