Mike/All:
just talked to HELLA:
the system is not being produced anymore, no parts available anymore.
They got several transponders in stock, (5FA 729 417-001) that`s the little grey thing you touch the sensor with. But it only makes sense if you got the red master-transponder to configure the system new! (A key-set consists of one red master-key and two grey keys...)
Me,I only got one grey key...
Anyone want to talk with HELLA,here is the number in Germany: 49 2941 380