Thanks for that. I'll have a look at the fuses, but as said, as I can reset it, it's more likely a sensor issue I guess? I'm sure it said something like RR valve stuck open? I'm guessing that's Right Rear (or Rear Right), but is it a valve on the bag? Would that just need cleaned?
I thought maybe a sensor or something causing the height to extend fully, but I wouldn't know what sensor to look at?