Problem: The   godiag CAS 2/3 adapter   will not work with my Autel IM508. However, my   godiag CAS4   works and my   godiag FEM/BDC   works completely fine. Is there a good alternative adapter I can use with my Autel for CAS 2/3? Here is the clue. The godiag BMW CAS2/CAS3 adapter cannot be used with Autel, Lonsdor or OBDSTAR devices to read immo data. Data cannot be read and written through the OBD2 bench method. This is because these devices   cannot perform 100kb CANbus   independent communication with the BMW IMMO module. Godiag cas2/3 doesn’t work with autel im508/im608! Only you can test the key after you complete the job on bench! Xhorse vvdi2, key tool max pro and key tool plus work fine with the godiag cas2/3 adapter on bench.