ICarsoft OBD MB11 Analyser . 2005. M. Benz. SLK 350

Hi Team. I have a M BENZ. SLK350 (2005). I have an icarsoft MBII analyser. The following fault codes have been read C1707 C1036 C1172
The analyser says they are not in database. I have contacted icarsoft twice, and received a message saying they don't know problem and to
Contact M Benz. I am loathe to do so unless no other avenue. Does anybody have any ideas. I have had INTERMITTENT, ESP and speedtronic message on dash. I have also eng light on, although this is due to,I think, another code which indicates # 2 cylinder low voltage
at plug.