Air suspension not lifting to right height on one side

[foru2justnv]

Hi
I have a 2003 w211 e320 cdi with full airmatic, ive noticed over last few weeks my nsr hasnt been lifting fully.
After doing some measurements today i have noticed that it sits some 20mm lower than other side in any setting (sports 1 sports 2 and comfort).
Has this side just lost its height setting?
Is there a preset height setting its supposed to have to know how high or low to set.
Vehicle rises and lowers fine just sits 20mm lower than other corners.
Regards Tiff

 

[Terry_]

I'd say you have an air spring gone bad

 

[foru2justnv]

If for example not that im wanting to go down that route but if costs are going to start. Mounting as it has a gearbox issue that i need to sort out.
If i get hold of 2 wishbones from a non airmatic w211 and put in 2 coil springs and 2 shocks or even just put in coil springs will it save the damping on the shocks or will it register as a complete fault.