GODIAG For BMW CAS4 / CAS4+ Test Platform Car Computerized Tester1. By using with Godiag GT100, Xhorse VVDI2, VVDI BIM Tool Pro, Lonsdor k518 and Autel im608 etc; you can program a new key, add a new key and replace the CAS4 CAS4+ ECU module in case of loss of all keys 2. Before re installing the CAS4 CAS4+ module in the vehicle, you can connect this test bench to the CAS module to test if it can communicate or if there are any malfunctions 3. For reading and backing up preprocessed data for replacing the CAS4 CAS4