Parkdistancecontrol partly only works after the Sensus starts up

After the start of the engine, the Sensus always takes some time to drive up – which is indicated by the Iron Mark. However, if there is an obstacle in the way, the PDC turns on immediately – also when the return gear is inserted, the return camera. – at least mostly! And here we are at the problem: sometimes it happens that PDC and RFC just work after the Iron Mark is gone! – what I had to find out yesterday fatally again: engine start and return gear in – behind me in the parking lot a deep wooden stake, which can of course not be recognized in the rear view mirror – as well. – But PDC would have recognized it! Mindfully HÄTTE – then exactly when it needs it does not work – DOTZ and the protective plate docked at the wood fplock! Excellent – that can’t be true – of course – a few cm of the protective plate then scratched up again a little bit or. the upper layer already – so much on the topic of protection plate – what it has protected me now? even before the software error can not work – but the problem of the maximum speed!