Hi have you replaced either of this modules? If you did were they new or used. Can you
tell us more, like the reason why you program this modules in the first place.

        wow that is a strange one. did you try the sync/aligment of the ews and dme to see if this issue goes away,  I know is not ews and cas or it wouldn't crank, but align cas anyway just in case. I have done it with ista after replacing either module but never with the maxi-sys  after an update, also try to code again the ews,dme,cas  see what happens maybe something got corrupted. lets see what other members and support can add to this issue. I wouldn't think updating modules could cause this problem, I have done a few  successfully though. we have a few members here that work on this vehicles way more than I do  and have a lot more experience  and can better help you  figure it out. check back soon good luck.

 Hi, can you please upload a data log from your device for our engineers to check the problem? Thanks!

 On the late models when do update programming always I-level in that group,

 All you have to do is to delete the interface between CAS and DME and then you will get all modules working fine together