Okay. I gave up and took the car to a highly recommended BMW INDEPENDENT.

They let me watch as they hooked it up to their computer:

Three faults. Only two showing in the computer.

1) front N/S ride height implausible value. Fitted new sensor. This immediately threw up the next error:

2) rear N/S ride height implausible value. Fitted new rear sensor. Car the self levelled itself. Bingo sorted? No.

3) spraying the air bags with washing up liquid revealed a tiny leak in the front N/S bag. New bag fitted.

The car has now been error free for three weeks and the suspension is working as designed.

This was a very expensive lesson. Had I known at the start (hindsight is great) I would have fitted Bilstein Coilovers and been done with it.

My icarsoft is hopeless as it cannot detect the twin axle suspension despite claiming it can. Icarsoft refuse to help out (they Dialer into it and say it’s not a clone)

Thank you all for your help.


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