Dreaded AUTO LEVEL SUSPENSION INACTIVE grrr!

[X5monsterBMW]

Hi again X5 peops... 4.8is problems ensue!

I am keen to know the answer to this!
What is 'DEVIATION RIDE LEVEL' ?? any ideas?

background...
8 months ago bought an X5 4.8is with full BMW service history.
It is a Dec 2004 vehicle & has now done 85K miles only
It is lovely...... immaculate...... however......

On the service history it has had the suspension air bags replaced.

A week ago I got the thing I had most feared.......
Dreaded AUTO LEVEL SUSPENSION INACTIVE notification.
Light went off in 'uppy downy' control & tyre flat indicator also came on!

Pls help...
The car is sitting level.

OK my pal runs reputable local garage.
We put it on the diagnostic - wiped the fault so that we could level the car. It was not much out.

I set it to the 722mm & 724mm settings - hope that is right. (with tape measure only).
The pump said it was running just over 13bars when it activated - which seems to be correct. We could move individual corners of the car (or axle at a time with no probs)
Also checked the 7.5 & 30amp fuses behind boot side panel.
We pressed the button (on diagnostic) that says set zero level - front then rear - again car stays level - & remembers height - no sag.

The original codes were ...
#32 EHC: CAN Bus
#74 EHC: Accumulator pressure remains constant (accumulator filling requested)

We can then raise/lower the car up and down on the usual interior switch/control.

However 100yds down road and the dreaded message returns - all switches off again - but car level!

We delved further in with the diagnostic - now this is were I don't understand the terminology!!

There was a page that said ...
DEVIATION RIDE LEVEL
Front Left 17 mm
Front Right 121 mm
Right Left 162 mm
Rear right 182 mm

Why is the front right so different.
Can anyone shed light on what this all means....

Also how the heck to I get rid of the puncture (flat tyre) yellow light/sign...

I know that there is lots on this fault generally - can anyone help...pls pls.

Is getting me down big time!

Will I ever cure this?

M