ok so air sus inactive is back ,i noticed that hdc was first to show then the asi.did a code check
1, dynimic stability 138 canbus error
2 air suspension ,100 articulation stability fault
same as,before so checked fuses ,all fine ran diagnostic all working ok ,
im stumped any ideas as i just keep doin the same things...

I'd be looking at the ABS system if the EAS is working fine as you say it is.

The EAS and ABS system all share the CANbus and talk to eachother as the ABS system will call on the EAS to stabilise the car when braking and cornering. the ABS gets info from the EAS on the attitude of the car when entering corners so the stability control can judge the cars behaviour etc....all this is also tided into the steering angle sensor...which gives steering input feedback to the ABS ECU....

if one of the systems fails (the EAS, ABS or the SAS) the CANbus will fault and shut all the associated system down...hence why you get HDC, ABS, ATC, ASC and EAS errors all at the same time!

Common issue with the ABS ECU is heat damage being above the exhaust and water ingress through the loom!

thanks saint v8 i,ll keep messin til i find it