Test report: VVDI2 CAS4/CAS4 + thru OBD Car: BMW 730LD (CAS4+ 5M48H) connect the vvdi2 machine to the car thru obd port and the laptop go to VVDI2 BMW software select CAS4/CAS4+ F series get key info VVDI2 read out key info unlock cas4/cas4+ warning: - you are gonna perform cas4/ca4+ programming function. it will take 10 minutes - you must provide extra power to the car before programming - if all keys are lost, please press the brake and open light to activate communication unlocking cas4/cas4+... cas4/ca4+ unlock success1 you can make a dealer key or reset km via obdii select a key position prepare a dealer key with a programmer having a working key switch ignition on with a working key insert the working key to ignition switch prepare record the following information info saved at : My document - vvdi2 - cas4 put the original key into vvdi2 put the new key into the vvdi2 programmer key is written suc