Hello together, on my 2006 R230 (one of the last pre-mopf) both Lordosenstützen do not go.. Have read in and also tried the search function, but without result so far; here the starting position: 1) all other pneumatic things like ZV, inner compartment locking, softclose work, therefore the pump is m.E. ok?!? 2) There are no obvious bends under the seats to see (how can the seats not be taken out (yet?).. there are other potential errors. can I somehow check if the adjustment wheels at the seats reach air pressure? Is there any plug connections / junctions etc. on the way between the pump and the seat?