Is the MaxisysEite limited on what it can do ? , we have a Maxisys Elite up to date , we work on 2008 to 2015 Mercedes Sprinter Ambulances , recently had a dpf issue the dpf was clogged , changed dpf relearned new settings  , blocked dpf code 2626 came back and could not erase , knowing if it was active the van wouldnt regen we had no choice but to take it to mercedes , mercedes said it had codes for the intake shutters , Maxisys did not see this and it was a sensor that controlled them , we would have saved the money fixing it ourself if we had software that read this , what else can this scanner not read ?