CAS4 all keys lost thru OBD using VVDI2: 10min done! Xhorse engineer 5 years ago CAS 4 vía OBD all keys lost using VVDI2. 10 min job. Related posts: How to do Audi A4 B8 2009 All Keys Lost using VVDI2 VVDI2 CAS4 OBD make key to BMW 535 GT 2010 (all keys lost) How to use VVDI2 to add CAS4+ keys thru OBD2 (BMW 730LD) 2009 BMW 3 series all keys lost: VVDI2 OBD2 add keys?