I took my car in because my rear subframe was cracked and they came back with a handful of other issues back there, including the rear height level sensors being seized. My first thought was to try to spray some penetrating oil on the linkage to see if that frees it up, but assuming it doesn't, does anyone have the part number for these? I wasn't having much luck searching on this. The dealer wants $887.84 to replace them.

 

https://www.fcpeuro.com/products/mercedes-suspension-ride-height-sensor-vne-2129052902

https://www.autohausaz.com/pn/MB-2129052902

2129052902, Mercedes calls them headlight level sensors because they also feed data to the headlights I guess

 

Ah, so they sell it as a complete unit. Thanks! I'll see if I can pop the plastic linkage off of mine, sand the rust off, and put it back together.