Is this normal?
Diagonally parked the cat on about a 30 degree slope, when restarted display showed "Air Suspension fault" .
Pulled over, no problem with ride height.
Got it home, left overnight, in morning car still at same height, warning gone.
No codes show on a scan.
The warning has happened once before, when I drove the front onto a ramp to elevate the front to change oil and filter.
Air Suspension fault came on, stayed on for day, left overnignt , gone.
Is it just the car does not like to not be level?
I do not have "suspension low" warnings, on both occasions car has been at normal ride height.

 

You should try to see whether there are any DTCs, and for that you need a scanner capable of reading the Jaguar specific codes, or, better yet, SDD, which is the Jaguar specific software.

From your description, it could be a defective height sensor, but, even if my assumption is correct, only a suitable scanner can confirm this and also tell you which one it is.

Best regards,

Thomas