S213 ABC & dynamic body control malfunction

[pembssurf]

2018 S213 E229d. Driving in -7 this morning in a lot of ice and after 30 minutes this pops up?

Have I got some ice damage on my self levelling rear suspension. Anything else this could be?

Car currently not sagging at the back end as best as I can tell.

 

[Londonscottish]

Lots of threads on this - search on "airmatic".

Usual suspects are level sensors, compressor or leaks in lines/valve block/air springs.