Immobilizer and BC spins!!!!!

Moin together, so the following problem:Now mine has this ominous immobilizer.Should be called if after the door is closed, nothing is going on within a minute of the engine.So get out again, unlock door to and from, then it funniest again.(top annoying)Does anyone know how to prevent or bridge that????? and how does that work with an FB ????And another problem:My BC counts backwards!!!!!I have always liked setting the BC on range, so this shows me how far I am coming with the amount of fuel currently in the tank.